for further information contact your local stmicroelectronics sales office. october 2012 doc id 023821 rev 1 1/9 9 EVAL6393FB low voltage full-bridge demonstration board based on the l6393 advanced high voltage gate driver data brief features ~150 w drive capability (50 v - 3.0 a r.m.s. ) very low area occupation, all devices and power switches in smd package (no heatsink) fast-decay or slow-decay on-board constant off-time peak current control pwm voltage mode control with overcurrent protection possible via external logic signals driver supply voltage on-board generation directly from bus voltage carefully optimized layout description the EVAL6393FB demonstrates how to use two l6393 drivers to drive a single-phase load through a full-bridge topology. this allows both the direction and the value of the current flowing into the load to be controlled. typical loads, which can be effectively driven by using this topology, are single-phase bldc motors, fans and hid lamps. thanks to the integrated features of the l6393, the board has a very small footprint and an optimized layout, and can be simply run by applying the bus voltage and a direction signal. EVAL6393FB www.st.com
board description EVAL6393FB 2/9 doc id 023821 rev 1 1 board description figure 1. jumper and connector location table 1. EVAL6393FB electrical specifications parameter value supply voltage range (vs) (1) (2) 1. minimum vs voltage restriction is due to biasing current of the zener diode used to generate v cc . this limit can be decreased by changing r29 value or by openi ng jp3 and providing an externally generated v cc through connector j1. 2. maximum vs voltage limit can be increased up to 580 v by replacing the power switches and bulk capacitor c15 with components with adequate voltage ratings. resistor r29 should be removed and an externally generated v cc should be provided through connector j1. 32 v to 52 v dc rms output current rating (out x) up to 3.0 a driver supply voltage (v cc ) (3) 3. when externally supplied thr ough j1 with jp3 opened, otherwise v cc = 12 v. 10 to 20 v logic control signals 0 to + 15 v operating temperature range -40 to +125 c lo a d connector s low/f as t dec a y s election j u mper s bu s volt a ge connector control s ign a l s a nd option a l extern a l vcc connector on- b o a rd vcc gener a tion j u mper off-time s etting trimmer pe a k c u rrent s etting trimmer am1261 8 v1
EVAL6393FB board description doc id 023821 rev 1 3/9 table 2. jumper and connector description name type function j1 control signal connector optional control signal and external v cc connector j2 power output load connector j3 power supply bus power supply connector jp1 configuration jumper to pull-up sd and/or brake signal to v cc /3 jp2 configuration jumper to pull-up sd and/or brake signal to cpout jp3 configuration jumper to connect the on-board generated v cc to the supply pins of the drivers table 3. control signal connector pinout (j1) pin type description 1 power supply driver power supply v cc , open jp3 to provide externally generated v cc 2 power supply gnd 3 digital input driver sd signal 4 digital input driver brake signal 5 analog pwm input v ctrl signal; used to change current limit threshold 6 digital input dir signal; sets current direction table 4. current peak detection settings pin type description tr1 variable resistor used to adjust constant off-time duration after overcurrent detection tr2 variable resistor used to adjust overcurrent detection threshold i pk i pk = v(cp-)/[r10//r11//r12//r13] table 5. control scheme configuration description jumper configuration constant off-time peak current control with slow- decay jp1 closed on !sd and jp2 closed on !brake constant off-time peak current control with fast- decay jp1 closed on !sd and jp2 closed on !sd pwm voltage control with slow-decay overcurrent protection jp1 open, jp2 closed on !brake and !sd externally provided through j1 pwm voltage control with fast-decay overcurrent protection jp1 open, jp2 closed on !sd and !brake externally provided through j1
board description EVAL6393FB 4/9 doc id 023821 rev 1 figure 2. EVAL6393FB schematic !sd !sd outb outa !brake !brake vctrl !brake !sd vctrl dir !dir !sd !brake dir dir p12v vcc vs vs vs vcc vcc vcc vcc vcc vs vcc vcc vs vcc vcc c2 1uf c2 1uf c10 100nf c10 100nf r14 1k r14 1k r9 1k r9 1k - + u2 l6393 - + u2 l6393 sd 2 brake 3 phase 1 vcc 4 dt 5 gnd 7 boot 14 hvg 13 out 12 lvg 10 6 cpout 9 cp+ 8 cp- r29 2k4 1w r29 2k4 1w - + u1 l6393 - + u1 l6393 sd 2 brake 3 phase 1 vcc 4 dt 5 gnd 7 boot 14 hvg 13 out 12 lvg 10 6 cpout 9 cp+ 8 cp- d2 ll4148 d2 ll4148 r30 1k r30 1k dz2 12v s od123 dz2 12v s od123 r10 0r15 1w 1% r10 0r15 1w 1% tr1 200k tr1 200k r5 30k r5 30k c5 5.6nf c5 5.6nf c3 100nf c3 100nf c14 10uf c14 10uf dz1 sod123 mmsz4683 dz1 sod123 mmsz4683 r20 24k r20 24k r11 0r15 1w 1% r11 0r15 1w 1% c15 100uf 63v c15 100uf 63v r18 7.5k r18 7.5k q5 std35nf06 q5 std35nf06 3 1 2 c13 100nf c13 100nf r24 47k r24 47k j1 j1 1 2 3 4 5 6 r1 51 r1 51 d3 ll4148 d3 ll4148 c18 33pf c18 33pf q1 std35nf06 q1 std35n 3 1 2 j3 j3 1 2 r22 47k r22 47k r23 51 r23 51 jp2 r3 47k r3 47k c1 470nf c1 470nf q2 std35nf06 q2 std35nf06 3 1 2 c7 4.7uf c7 4.7uf c9 1uf c9 1uf r26 7.5k r26 7.5k d1 ll4148 d1 ll4148 r12 0r15 1w 1% r12 0r15 1w 1% r27 3.9k r27 3.9k c17 100nf c17 100nf c11 33pf c11 33pf c12 22nf c12 22nf jp3 jp3 c8 470nf c8 470nf tr2 500 tr2 500 r4 30k r4 30k d4 ll4148 d4 ll4148 r21 51 r21 51 r8 10k r8 10k q4 std35nf06 q4 std35nf06 3 1 2 r25 24k r25 24k q3 q3 2n7002 2 1 3 jp1 c16 33pf c16 33pf c6 4.7uf c6 4.7uf j2 j2 1 2 c4 1nf c4 1nf r2 51 r2 51 r13 0r15 1w 1% r13 0r15 1w 1% r6 24k r6 24k am12619v1
EVAL6393FB board description doc id 023821 rev 1 5/9 table 6. EVAL6393FB bill of material reference value description c1, c8 470 nf, 25 v smt ceramic capacitor, 0805 c2, c9 1 f, 25 v smt ceramic capacitor, 0805 c3, c10, c13, c17 100 nf, 25 v smt ceramic capacitor, 0603 c4 1 nf, 25 v smt ceramic capacitor, 0603 c5 5.6 nf, 25 v smt ceramic capacitor, 0603 c6, c7 4.7 f smt ceramic capacitor, 0805 c11, c16, c18 33 pf, 25 v smt ceramic capacitor, 0603 c12 22 nf, 25 v smt ceramic capacitor, 0805 c14 10 f, 25 v smt ceramic capacitor, 1206 c15 100 f, 63 v radial lead electrolytic capacitor (d 10 mm, h 12.5 mm) d1, d2, d3, d4 ll4148 fast switching diode, sod80 dz1 mmsz4683 3 v zener diode, sod123 dz2 12 v zener diode, sod123 j1 1x6 strip, 2.54 mm pitch j2, j3 1x2 screw pcb terminal block, 5.08 mm pitch jp1, jp2 2- way solder jumper jp3 solder jumper q1, q2, q4, q5 std35nf06 60 v, 35 a n-channel power mosfet in dpak q3 2n7002 60 v, 0.2 a n-channel power mosfet in sot23 r1, r2, r21, r23 51 smt resistor, 0603 r3, r22, r24 47 k smt resistor, 0603 r4, r5 30 k smt resistor, 0603 r6, r20, r25 24 k smt resistor, 0603 r8 10 k smt resistor, 0603 r9, r14, r30 1 k smt resistor, 0603 r10, r11, r12, r13 1% 1 w smt resistor, 2512 r18, r26 7.5 k smt resistor, 0603 r27 3.9 k smt resistor, 0603 r29 5% 1w smt resistor, 2512 tr1 200 k smt trimmer tr2 500 smt trimmer u1, u2 l6393d half-bridge gate driver, in so14
board description EVAL6393FB 6/9 doc id 023821 rev 1 figure 3. EVAL6393FB ? layout (top layer) figure 4. EVAL6393FB ? layout (bottom layer) am12620v1 am12621v1
EVAL6393FB board description doc id 023821 rev 1 7/9 figure 5. EVAL6393FB ? layout (component placement view) am12622v1
revision history EVAL6393FB 8/9 doc id 023821 rev 1 2 revision history table 7. document revision history date revision changes 23-oct-2012 1 initial release.
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