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product structure silicon monolithic integrated circuit this product ha s no designed protection against radioactive rays 1/ 40 tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com c v tsz22111 ? 14 ? 001 15.sep.2015 rev.005 input voltage 3.5 v to 36 v output sw current 4 a / 2.5a / 1.25a 1ch step - down switching regulator bd906 xx- c series general description bd906xx -c series is a step - down switching regulator with integrated power mos fet and ha ve the capabilit y to withstand high input voltage, providing a free setting function of operating switching frequency with external resistor. this switching regulat or features a wide input voltage range (3.5 v to 36 v , absolute m aximum 42 v ) and operating temperature range ( -40 c to +125 c). furthermore, an external synchronization input pin enables synchronous operation with external clock. features ? aec - q100 qualified (note 1) ? integrated pch power mos fet ? l ow dropout: 100 % on duty cycle ? e xternal synchronization fu nction ? soft start f unction: 1.38 ms (f sw = 500 khz) ? current m ode c ontrol ? over current protection ? low supply voltage error prevention ? thermal shut down protection ? s hort c ircuit p rotection ? high power h rp7 package mounted ? compact and high power htsop - j8 package mounted ? load dump up to 42 v. (note 1 : grade 1) applications ? automotive battery powered supplies (cluster p anels, car multimedia) ? industrial / consumer supplies ? other electronic equipment key specifications ? input voltage range : 3.5 v to 36 v (initial startup is over 3.9 v) ? output v oltage r ange : 0.8 v to v in ? output switch c urrent : 4 a / 2 .5 a / 1 .25 a ( max ) ? s witchi ng f requency : 50 khz to 6 00 khz ? reference v oltage a ccuracy : 2 % (-40 c to +125 c ) ? shutdown circuit c urrent : 0 a (typ) ? operating t emperature r ange (ta) : - 40 c to +125 c package w( typ ) x d( typ ) x h(max) hrp7 9.395mm x 10.540mm x 2.005mm htsop -j8 4.90mm x 6.00mm x 1.00mm hrp7 htsop -j8 typical application circuit datashee t pvin vin rt en / sync gnd sw fb vc c in cbulk c rt r rt v in v en / sync d1 r3 c1 l1 c o r1 r2 c2 v o
2 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 lineup product name hrp7 bd90640hfp - c bd90620hfp - c - htsop - j8 bd90640efj - c bd90620efj - c bd90610efj - c output switch current 4 a 2.5 a 1.25 a input m aximum r atings 42 v input voltage range (note 1) 3.5 v to 36 v power mosfet on r esistance 0.16 70 m / 35 m 70 m / 35 m
3 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 pin configuration h rp 7 htsop - j8 pin description pin no. symbol function pin no symbol function 1 vc error amp output 1 rt switching frequency s etting r esistor c onnection 2 vin power supply input 2 sw switching output 3 fb output vol tage feedback 3 en / sync enable / external clock input 4 gnd gnd 4 gnd gnd 5 rt switching frequency s etting r esistor c onnection 5 vc error amp output 6 sw switching output 6 vin (note 1) power supply input 7 en / sync enable / external clock input 7 pvin (note 1) power supply input fin - gnd 8 fb output vol tage feedback (note 1) vin and pvin must be s horted . h rp 7 htsop - j8 block diagram h rp 7 htsop - j8 fin 1. vc 2 . vin 3 . fb 4 . gnd 5 . rt 6 . sw 7 . en / sync (top view) 1. rt 2. sw 3. en / sync 4. gnd 8. fb 7. pvin 6. vin 5. vc (top view) p w m _ l a t c h d r v q s r + - - + + s c p _ l a t c h 8 f b 0 . 8 v s o f t _ s t a r t p c h p o w e r m o s f e t s l o p e o s c 5 v c 2 s w 1 r t 3 e n / s y n c v r e f v r e g u v l o t s d 6 e n u v l o t s d o c p s c p _ l a t c h o f f + - 0 . 5 5 v o c p c u r r e n t s e n s e c u r _ c o m p e r r o r _ a m p 4 g n d o c p 7 p v i n e n / s y n c s c p _ l a t c h v i n p w m _ l a t c h d r v q s r + - - + + s c p _ l a t c h 0 . 8 v s o f t _ s t a r t p c h p o w e r m o s f e t s l o p e o s c v c s w r t e n / s y n c v r e f v r e g u v l o t s d e n u v l o t s d o c p s c p _ l a t c h o f f + - 0 . 5 5 v o c p c u r r e n t s e n s e c u r _ c o m p e r r o r _ a m p g n d o c p
4 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 description of blocks 1. err or _ amp the error _ amp block is an error amplifier and its inputs are the reference voltage 0.8 v (typ) and the the ic is in normal operation when the voltage on the en / sync voltage on the en / sync applied to the en / sync mosfets
5 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 absolute maximum ratings ( ta = 25 c) parameter symbol rating unit input power s upply voltage v in , pv in - 0.3 to + 42 v en / sync pin voltage v en / sync - 0.3 to v in v rt , vc, fb pin voltage v rt , v vc , v fb - 0.3 to + 7 v power dissipation (note1) hrp7 (note2) pd 6.98 w htsop - j8 (note3) 3.10 storage temperature range tstg - 55 to +150 c maximum junction temperature tjmax 150 c (note 1) do not however exceed pd. (note 2 ) reduce by 5 5.8 mw / c, (above 25 c ), (jesd51 - 5 / - 7 standa rd fr4 114.3 mm 76.2 mm 1.6 0 mmt 4 - layer top copper foil: rohm recommended footprint + wiring to measure / 2,3 inner layers and copper foil area on the reverse side of pcb 74.2 mm 74.2 mm, copper (top & reverse side / inner layers) 70 m / 35 m. thermal via : pitch 1.2 mm, diameter 0.30 mm ) (note 3 ) reduce by 2 4.8 mw / c, (above 25 c ), (jesd51 - 5 / - 7 standard fr4 114.3 mm 76.2 mm 1.6 0 mmt 4 - layer top copper foil: rohm recommended footprint + wiring to measure / 2,3 inner layers and copper foil area on the reverse side of pcb 74.2 mm 74.2 mm, copper (top & reverse side / inner layers) 70 m / 35 m. thermal via : pitch 1.2 mm, diameter 0.30 mm ) caution : exceeding the absolute maximum rating for supply voltage, operating temperature or other parameters can result in damages to or destruction of the chip. in this event it also becomes impossible to determine the cause of the damage (e.g. short circuit, ope n circuit, etc). therefore, if any special mode is being considered with values expected to exceed the absolute maximum ratings, implementing physical safety measures, such as adding fuses, should be considered. recommended operating conditions parameter symbol limit unit min max operating power supply voltage (note 1) v in, pv in 3.5 36 v operating temperature range topr - 40 +125 c output switch current (note2) bd90640hfp/efj - c i sw40 - 4 a bd90620hfp/efj - c i sw20 - 2.5 a bd90610efj - c i sw10 - 1.25 a output voltage v o 0.8 v in v min o n p ulse w idth t on _ min 250 - ns switching frequency f sw 50 600 khz switching frequency set resistance r rt 22 330 k
6 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 electrical characteristics ( unless otherwise specified, ta = - 40 c to +125 c, v in = 13.2 v, v en / sync = 5 v ) parameter symbol limit unit conditions min t yp m ax whole chip shutdown circuit current i sdn - 0 5 a a v v 36 a a a a a v v 36 a
7 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 typical performance curves 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 5 10 15 20 25 30 35 40 circuit current :i in [ma] input voltage : v in [v] 0 1 2 3 4 5 6 7 8 9 10 0 5 10 15 20 25 30 35 40 switch current limit : i sw [a] input voltage : v in [v] figure 1. shutdown circuit current vs input voltage figure 2. circuit current vs input voltage figure 3. power mosfet on resistance vs ambient temperature figure 4. switch current limit vs input voltage from top bd90640hfp / efj - c bd90620hfp / efj - c bd90610efj - c ta = 25 c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 5 10 15 20 25 30 35 40 shutdown circuit current : i sdn [a] input voltage : v in [v] 0.00 0.05 0.10 0.15 0.20 0.25 0.30 -40 -20 0 20 40 60 80 100 120 power mosfet on resistance : r on [] ?c
8 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 typical performance curves C ?c [a] ?c [a] ?c [s] ?c = 27 k
9 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 typical performance curves C ?c ?c k [a]
10 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 timing chart 1. start up operation 2. over current protection operation v i n e n / s y n c s s s w v o v c i n t e r n a l s l o p e e n / s y n c t h r e s h o l d v o l t a g e s w v o v c i n t e r n a l s o f t s t a r t i l t o f f * o u t p u t v o l t a g e s h o r t t o g n d a u t o r e s e t ( s o f t s t a r t o p e r a t i o n ) f b t s s * >( t o f f , >( t s s t e r m i n a l o u t p u t v o l t a g e s h o r t r e l e a s e n o r m a l p u l s e r e p e t i t i o n a t t h e f o l l o w i n g o v e r c u r r e n t d e t e c t l e v e l s h o r t c u r r e n t d e t e c t l e v e l t o f f * t o f f * t o f f = 1 0 2 4 / f s w [ s ] e x ) f s w = 5 0 0 [ k h z ] , t o f f = 2 . 0 4 8 [ m s ] t s s = 1 . 3 8 [ m s ] ( t y p )
11 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 external synchroniz ation function in order to activate the external synchronization function, connect the frequency - setting resistor to the rt pin and then input a synchronizing signal to the en / sync pin. the external synchroniz ation operation frequency is limited by the external resistance of r rt pin. the allowable setting limit is within 20 % of the switching frequency . ex) when r rt is 27 k p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o
12 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 continuous operation discontinuous operation selection of components externally connected necessary parameters in designing the power supply are as follows: parameter symbol specification case input voltage v in 6 v to 18 v o utput voltage v o 5 v output r ipple voltage v i ? = ( ? ?? ( ??? ) ? ?? ) ?? ? ?? ( ??? ) ? ?? ? ? ? ? ?? ( ??? ) ? ? > ( ? ?? ( ? ?? ) ? ? ? ) ? ? 2 ? ?? ( ??? ) ? ?? ? ? ? pvin vin rt en / sync gnd sw fb vc c in cbulk c rt r rt v in v en / sync d1 r3 c1 l1 c o r1 r2 c2 v o s w v t i l t i o
13 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 a i o i l t i swlimit (min) i l peak selection of components externally connected C the smaller the i v . v ? ? ?? = ? ? ? ??? + ? ? ? 8 ? ? ? ?? ??? ? ? generally, even if i is somewhat large, v and determine the i within the acceptable range of v able, v ? ? ( ??? ) = ? ?????? ? ( ??? ) ? ? ? ? 2 ? ? ( ??? ) ? ??????? ( ??? ) ? 2d ? 1 2 ( 1 ? ? ) ?? ? ?? ( ??? ) ? ? ? ? d = ? ? ? ?? ( ??? ) ? = 6 ? ?? 10 ? 6 ? ? ? ?
14 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 selection of components externally connected C v that v ? ?? ( ??? ) = ? ? ? 12 ? ?? ( ??? ) is the value of the ripple electric current i n addition, total value of capacitance with output line c o(m a x) , respect to c o , choose capacitance value less than the value obtained by the following equation. ? ? ( ??? ) = ? ?? ( ??? ) ( ? ?????? ( ??? ) ? ? ? ????? ( ??? ) ) ? ? ? ??????? ( ??? ) ? ?? ( ??? ) ? ??????? ( ??? ) is the m aximum o utput c urrent during startup the startup failure may happen when the limits from the above - mentioned are exceeded. especially if the capacitance value is extremely large , over - current protection may be activated by the inrush current at startup, and the output does not start . please confirm this on the actual application . for stable transient response, the loop is dependent on the c o . please select after co nfirming the setting of the phase compensation circuit. also, in case of large changing input voltage and load current, select the capacitance in accordance with verifying that the actual application meets with the required specification.
15 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 selection of co mponents externally connected C ? ??? ( ??? ) = ? ? ( ??? ) ? ? ? ( ? ?? ? ? ? ) ? ?? ? ??? ( ??? ) ? ? = 0 . 8 ? 1 + ? 2 ? 2 k
16 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 selection of components externally connected C ? ? ( ??? ) = ? ? ( ??? ) ? ?? ( ??? ) ? ? ? ? ?? ( ??? ) ? ? ( ??? ) ? ? ? = ? ? ( ??? ) ? ?? ( ??? ) ? ? ? ? ?? ( ??? ) ?? ?? ? ? ( ??? ) [k] [k] [k]
17 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 selection of components externally connected C 5 ?(more than 45 ? ? ? 1 = 1 2 ? ? 3 ? 1 ? ? 1 = 1 2 ? ? ? ? ? ? ? 2 = ? ?? 2 ? ? 1 ? ? ? ? 2 = 1 2 ? ? 1 ? 2 ? ? ? ?? is the error amp trans conductance (270 a / v) ? ? v o c 2 r 1 r 2 v r e f e r r o r _ a m p v c r 3 c 1 s w d 1 l 1 c o r o v o f b
18 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 selection of components externally connected C 0 . 5 ? ? 1 ? ? 1 5 ? ? 1 ( f p 1 >; 362 hz [i o =500 ma], 2.53 khz [i o =3.5 a] f z 1 =1.69 khz) 2. f z2 setting is to shift the 0 db crossing frequency to high er frequency or to improvephase margin near the 0 db crossing frequency . typical setting of f z2, f p1 in application examples3 (p.23) is as below. 0 . 5 ? ???? ? ? 2 2 ? ???? (f zero >; 31.6 khz [i o =400 ma] f z2 =20.6 khz) actually, the changes in the frequency characteristic are greatly affected by the type and the condition (temperature, etc.) of parts that are used, the wire routing and layout of the pcb. please confirm stability and responsiveness in actual equipment. to check the actual frequency characteristics, use a fra or a gain - phase analyzer. moreover, the method of observing the degree of change by the loading response can be performed when these measuring instruments are not available. the phase margin degree is said to be low when there are lots of variation quantities after the ou tput is made to change under no load to maximum load. it can also be observed that the phase margin degree is low when there is a lot of ringing frequencies after the transition of no load to maximum load, usually two times or more ringing than the standar d. however, a quantitative phase margin degree cannot be confirmed. measurement of load response 8. setting of soft start time (t ss ) the soft start function is necessary to prevent inrush of coil current and output voltage overshoot at startup. t ss will be changed by setting the switching frequency . the production tolerance of t ss is 18.1%.t ss can be calculated by using the equation. ? ?? = 690 . 8 ??? m a x i m u m l o a d i n a d e q u a t e p h a s e m a r g i n a d e q u a t e p h a s e m a r g i n . t l o a d i o o u t p u t v o l t a g e v o 0
19 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 application examples 1 parameter symbol specification case product name ic bd90640hfp / efj - c input v oltage v in 6 v to 1 8 v output voltage v o 5 v output ripple voltage v k, 1 k, 1 k, 1 k, 1 f f, x7r, 16 v 2 p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o r 1 0 0
20 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 characteristic d ata ( application examples 1 ) 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 efficiency [%] output current : i o [a] figure 17. load response 1 ( v in = 13.2 v , i o = 1.5 a 2.0 a, 200 s / div 1 s / div
21 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 application examples 2 parameter symbol specification case product name ic bd90620hfp / efj - c input v oltage v in 6 v to 18 v output voltage v o 5 v output ripple voltage v k, 1 k, 1 k, 1 k, 1 f f, x7r, 16 v 2 p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o r 1 0 0
22 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 characteristic d ata ( application examples 2 ) 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 efficiency [%] output current : i o [a] figure 21. load responseresponse 2 ( v in = 13.2 v , i o = 0.8 a 1.5 a, 200 s / div 1 s / div d c offset 0.8a v o 50 mv / div a c phase gain
23 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 application examples 3 parameter symbol specification case product name ic bd90610efj - c input v oltage v in 6 v to 18 v output voltage v o 5 v output ripple voltage v k, 1 k, 1 k, 1 k, 1 f f, x7r, 16 v 2 p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o r 1 0 0
24 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 characteristic d ata ( application examples 3) 0 10 20 30 40 50 60 70 80 90 100 0.0 0.2 0.4 0.6 0.8 efficiency [%] output current : i o [a] figure 25. load response 3 ( v in = 13.2 v , i o = 0.4 a 0.8 a, 200 s / div 1 s / div d c v o 50 mv / div a c phase gain
25 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 application examples 4 parameter symbol specification case product name ic bd90640hfp / efj - c input v oltage v in 3.5 v to 1 8 v output voltage v o 3.3 v output ripple voltage v k, 1 k, 1 k, 1 k, 1 f f, p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o r 1 0 0
26 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 characteristic d ata ( application examples 4) 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 efficiency [%] output current : i o [a] figure 29. load response 4 ( v in = 13.2 v , i o = 1.5 a 2.0 a, 200 s / div 1 s / div d c offset 1.5a v o 50 mv / div a c phase gain
27 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 application examples 5 parameter symbol specification case product name ic bd90640hfp / efj - c input v oltage v in 9 v to 18 v output voltage v o 8.8 v output ripple voltage v k, 1 k, 1 k, 1 k, 1 p v i n v i n r t e n / s y n c g n d s w f b v c c i n c b u l k c r t r r t v i n v e n / s y n c d 1 r 3 c 1 l 1 c o r 1 r 2 c 2 v o r 1 0 0
28 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 characteristic d ata ( application examples 5) 0 10 20 30 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 efficiency [%] output current : i o [a] figure 33. load response 5 ( v in = 13.2 v , i o = 1.5 a 2.0 a, 500 s / div d c offset 1.5a v o 50 mv / div a c phase gain
29 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 automotive p ower s upply l ine circuit figure 3 4. filter c ircuit the input filter circuit for emc measures is depicted in the above figure 3 4. the c c r e v e r s e - t o u c h i n g p r o t e c t i o n d i o d e l
30 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 directions f or pattern layout of pcb exposed die pad is needed to be connected to gnd. application circuit ( hrp 7) exposed die pad is needed to be connected to gnd. application circuit ( htsop - j8 ) 1. arrange the wirings of the wide lines , shown above, as short as possible in a broad pattern. 2. locate the input ceramic capacitor c in as close to the vin - gnd pin as possible. 3. locate r rt as close to the rt pin as possible. 4. locate r1 and r2 as close to the fb pin as possible, and provide the shortest wiring from the r1 and r2 to the fb pin. 5. locate r1 and r2 as far away from the l1 as possible. 6. separate power gnd (schottky diode, i/o capacitor `s gnd) and s ignal gnd (r t , vc ), so that switching noise does n o t have an effect on signal gnd at all. 7. the feedback frequency characteristics (phase margin) can be measured using fra by inserting a resistor at the location of r100. however, this should be shorted during normal operation. r100 is option pattern for measuring the feedback frequency characteristics. 1 . r t 4 . g n d 8 . f b 5 . v c v o l 1 c o 1 d 1 r r t c r t r 3 c 1 c i n 1 c i n 2 c o 2 c b u l k r 1 r 1 0 0 r 2 2 . s w 3 . e n / s y n c 7 . p v i n 6 . v i n c 2 v i n d 1 l 1 v o c o 1 c o 2 r 1 r 1 0 0 c 2 r 3 c 1 c r t r 2 r r t c i n 1 c i n 2 c b u l k v i n 1 . v c 2 . v i n 3 . f b 4 . g n d 5 . r t 6 . s w 7 . e n / s y n c g n d
31 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 reference layout pattern hrp7 htsop - j8 top layer bottom layer top layer bottom layer r 3 c 1 g n d e n s w r t v c v i n p v i n f b g n d v i n v o p g n d p g n d r 2 c 2 r 1 r 1 0 0 e n / s y n c v i n p g n d p g n d e n / s y n c c i n 2 c i n 1 l 1 c o 1 c o 2 c r t r r t v o g n d d 1 c b u l k v o p g n d p g n d c o 1 c o 2 v i n d 1 g n d c 1 r 3 l 1 v o p g n d p g n d v i n e n / s y n c c r t e n / s y n c g n d e n s w r t v c v i n f b c i n 2 c i n 1 r 1 0 0 r 1 r r t c 2 r 2 g n d c b u l k
32 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 power dissipation for thermal design, be sure to operate the ic within the following conditions. (since the temperatures described hereunder are all guaranteed temperature s , take margin into account.) 1. the ambient temperature ta is to be 125 c or less. 2. the chip junction temperature tj is to be 150 c or less. the chip junction temperature tj can be considered in the following two patterns: q to obtain tj from the package surface center temperature t t in actual use ?? = ?? + ? ?? ? r to obtain tj from the ambient temperature ta ?? = ? ? + ?? ? ? >: reference value >< hrp7 >: reference value >< htsop - j8 jc jc ja ja ? = ? on ? ? 2 ? ? ? ?? + ? ?? ? ?? + 1 2 ( ?? + ?? ) ? ?? ? ? ??? r on is the on r esistance of ic (r efer to page 7 ) [ i o is the load current [a] v o is the output voltage [ v ] v in is the input voltage [ v ] i in is the circuit current ( r efer to page 7 ) [a] tr is the switching rise t ime [ s ] (typ:17ns) t f is the switching fall t ime [ s ] (typ:17ns) f sw is the switching frequency [hz] ? ?? ? ? 2 1 2 ( ?? + ?? ) ? ?? ? ? 1 ? = ?? ? ?? ? ? ??? s w w a v e f o r m v i n g n d t r ( 1 7 n s )
33 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 thermal reduction characteristics hrp7 ?c 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 0 25 50 75 100 125 150 power dissipation : pd[w] ambient temperature : [ ?c
34 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 i/o equivalent circuit vc rt sw fb en / sync 1 0 k e n / s y n c v i n 1 8 5 k r t 3 0 k s w v i n p v i n v c v i n 1 k
35 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 operational notes 1. reverse c onnection of p ower s upply connecting the power supply in reverse polarity can damage the ic. take pr ecautions against reverse polarity when connecting the power supply , such as mounting an external diode between the power supply and the ic subject the ic to stress. always discharge capacitors completely after each process or step. the ics power supply
36 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 operational notes C within the ics power dissipation rating. if however the rating is exceeded for a continued period, the junction n n p + p n n p + p s u b s t r a t e g n d n p + n n p + n p p s u b s t r a t e g n d g n d p a r a s i t i c e l e m e n t s p i n a p i n a p i n b p i n b b c e p a r a s i t i c e l e m e n t s g n d p a r a s i t i c e l e m e n t s c b e t r a n s i s t o r ( n p n ) r e s i s t o r n r e g i o n c l o s e - b y p a r a s i t i c e l e m e n t s
37 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 ordering information b d 9 0 6 4 0 h f p - c t r product name output switch c urrent 90640 : 4 a 90620 : 2.5 a 90610 : 1.25 a package hfp : hrp7 efj : htsop - j8 product rank c : for automotive tape and reel information tr : reel type embossed taping e2 : reel type embossed taping marking diagram output switch current part number marking 4 a bd90640hfp 2.5 a bd90620 hfp output switch current part number marking 4 a d90640 2.5 a d90620 1.25 a d90610 htsop - j8 (top view) part number marking lot number 1pin mark hrp 7 (top view) part number marking lot number 1pin mark
38 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 physical dimension , tape and reel information package name hrp7
39 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 physical dimension , tape and reel information package name htsop - j8
40 / 40 bd906 xx - c se ries tsz02201 - 0t1t0al00130 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 15 001 15.sep.2015 rev.005 revision history date revision changes 6 . jan .201 4 001 new release 7 .apr.2014 002 p. 4 description of ocp remove sentence
datasheet d a t a s h e e t notice-paa-e rev.001 ? 2015 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. if you intend to use our products in devices requiring extremely high reliability (such as medical equipment (note 1) , aircraft/spacecraft, nuclear power controllers, etc.) and whos e malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sales representative in advance. unless otherwise agreed in writ ing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses in curred by you or third parties arising from the use of any rohm?s products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are not designed under any special or extr aordinary environments or conditi ons, as exemplified below. accordingly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any rohm?s products under an y special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range descr ibed in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be us ed on a surface-mount products, the flow soldering method must be used on a through hole mount products. if the flow sol dering method is preferred on a surface-mount products, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification
datasheet d a t a s h e e t notice-paa-e rev.001 ? 2015 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a hum idity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since concerned goods might be fallen under listed items of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contain ed in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. rohm shall not have any obligations where the claims, actions or demands arising from the co mbination of the products with other articles such as components, circui ts, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the informati on contained in this document. pr ovided, however, that rohm will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the produc ts, subject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2015 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number bd90610efj-c package htsop-j8 unit quantity 2500 minimum package quantity 2500 packing type taping constitution materials list inquiry rohs yes bd90610efj-c - web page distribution inventory

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