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| PD-94541D AHF28XX SERIES 28V Input, Single and Dual Output HYBRID-HIGH RELIABILITY DC-DC CONVERTER Description The AHF Series of DC-DC converters feature single or dual outputs over the full military temperature range. No derating in output power is required, making them suitable for use in rugged military applications. The low profile, small outline package is ideally suited to the tight board space requirements of many industrial and aerospace applications. Designed for nominal 28Vdc inputs, this family of converters will meet the requirements of MIL-STD-704D. The basic circuit utilizes a pulse width modulated, feed-forward topology at a nominal switching frequency of 550KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. The proprietary magnetic feedback circuit provides for an extremely wide bandwidth control loop with a high phase margin. The closed loop frequency response of this converter family extends to approximately 50KHz, resulting in superior line and load transient characteristics. This feedback method is also inherently temperature and radiation insensitive. This gives the AHF Series an important advantage over converters that incorporate opto-couplers in their design. Manufactured in a facility fully qualified to MIL-PRF38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Variations are electrical, mechanical and screening can be accommodated. Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact IR San Jose with specific requirements. AHF Features n n n n n n n n n n 16V to 40VDC Input Range (28 VDC Nominal) Single and Dual Outputs 12W Output Power 22.8W/in3 Power Density Low Input / Output Noise (50mA/60mVp-p max. respectively) Indefinite Short Circuit and Overload Protection Wideband Control Loop for Superior Transient Characterstics No derating for -55C to +125C Operation Constant Switching Frequency (550KHz Nominal) Standard Microcircuit Drawings Available www.irf.com 1 03/09/10 AHF28XX Series Specifications Absolute M axim um Ratings Input voltage Soldering temperature O perating case temperature Storage case tem perature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2803R3S Table I. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1 2 Group A Subgroups Device Types Min Limits Unit Max 3.34 3.36 3000 60 V mA mV p-p VOUT IOUT VRIP IOUT = 0 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 3.26 3.23 Output ripple voltage Line regulation VRLINE 1,2,3 01 25 mV Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load Input to output or any pin 1,2,3 01 50 mV 12 1,2,3 01 30 1,2,3 1 2,3 1 01 01 72 70 100 50 mA p-p % mA Input current IIN Input ripple current Efficiency 2 IRIP EFF Isolation ISO to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Tc = +25C Overload Short circuit IOUT = 100% rated load 5 01 M Capacitive load 3, 4 CL PD FS 4 1 1,2,3 4,5,6 01 01 01 01 500 500 6.0 2.0 600 F W KHz Power dissipation load fault Switching frequency For Notes to Specifications, refer to page 3 2 www.irf.com AHF28XX Series Table I. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 6 changes Recovery time step transient load 6, 7 changes Output response to transient step line changes Recovery time transient step line changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 AHF2803R3S Limits Unit Group A Subgroups Device Types Min Max +300 mVpk +500 70 s s ms mVpk 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load 50% to/from 100% rated load TTLOAD 0% to/from 50% rated load 50% to/from 0% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 4, 8 4,5,6 01 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 01 01 -300 -500 1200 8.0 500 TTLINE 4,5,6 4,5,6 4,5,6 4,5,6 01 01 01 01 800 600 20 20 38 s mVpk ms ms g rated load VTonOS IOUT = o and 100% rated load TonD TrLF IOUT = o and 100% rated load 9 Notes to Specifications 1. Parameter guaranteed by line and load regulation tests. 2. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. 3. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 4. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table I. 5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 6. Load step transition time between 2.0s and 10s. 7. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 8. Input step transition time between 2.0s and 10s. 9. Turn-on delay time measurement is for either a step application of power at the input or the removal of ground signal from the inhibit pin (pin 1) while power is applied to the input is unlimited. www.irf.com 3 AHF28XX Series Specifications Absolute M axim um Ratings Input voltage Soldering temperature O perating case temperature Storage case tem perature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2805S Table II. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1 2 Group A Subgroups Device Types Min Limits Unit Max 5.05 5.10 2400 60 V mA mV p-p VOUT IOUT VRIP IOUT = 0 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 4.95 4.90 Output ripple voltage Line regulation VRLINE 1,2,3 01 25 mV Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load Input to output or any pin 1,2,3 01 50 mV 12 1,2,3 01 30 1,2,3 1 2,3 1 01 01 76 74 100 50 mA p-p % mA Input current IIN Input ripple current Efficiency 2 IRIP EFF Isolation ISO to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Tc = +25C Overload Short circuit IOUT = 100% rated load 5 01 M Capacitive load 3, 4 CL PD FS 4 1 1,2,3 4,5,6 01 01 01 01 500 500 6.0 2.0 600 F W KHz Power dissipation load fault Switching frequency For Notes to Specifications, refer to page 5 4 www.irf.com AHF28XX Series Table II. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 6 changes Recovery time step transient load 6, 7 changes Output response to transient step line changes Recovery time transient step line changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 AHF2805S Limits Unit Group A Subgroups Device Types Min Max +300 mVpk +500 70 s s ms mVpk 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load 50% to/from 100% rated load TTLOAD 0% to/from 50% rated load 50% to/from 0% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 4, 8 4,5,6 01 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 01 01 -300 -500 1200 8.0 500 TTLINE 4,5,6 4,5,6 9 01 01 01 01 800 600 20 20 38 s mVpk ms ms g rated load VTonOS IOUT = o and 100% rated load TonD TrLF IOUT = o and 100% rated load 4,5,6 4,5,6 Notes to Specifications 1. Parameter guaranteed by line and load regulation tests. 2. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. 3. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 4. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table I. 5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 6. Load step transition time between 2.0s and 10s. 7. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 8. Input step transition time between 2.0s and 10s. 9. Turn-on delay time measurement is for either a step application of power at the input or the removal of ground signal from the inhibit pin (pin 1) while power is applied to the input is unlimited. www.irf.com 5 AHF28XX Series Specifications Absolute Maximum Ratings Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2812S Table III. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1 2 Group A Subgroups Device Types Min Limits Unit Max 12.12 12.24 1000 60 V mA mV p-p VOUT IOUT VRIP IOUT = 0 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 11.88 11.76 Output ripple voltage Line regulation VRLINE 1,2,3 01 50 mV Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load Input to output or any pin 1,2,3 01 50 mV 12 1,2,3 01 50 1,2,3 1 2,3 1 01 01 78 75 100 50 mA p-p % mA Input current IIN Input ripple current Efficiency 2 IRIP EFF Isolation ISO to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Tc = +25C Overload Short circuit IOUT = 100% rated load 5 01 M Capacitive load 3, 4 CL PD FS 4 1 1,2,3 4,5,6 01 01 01 01 500 500 6.0 2.0 600 F W KHz Power dissipation load fault Switching frequency For Notes to Specifications, refer to page 7 6 www.irf.com AHF28XX Series Table III. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 6 changes Recovery time step transient load 6, 7 changes Output response to transient step line changes Recovery time transient step line changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 AHF2812S Limits Unit Group A Subgroups Device Types Min Max +300 +450 +500 +750 100 s s ms mVpk 1500 10 mVpk 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load 50% to/from 100% rated load TTLOAD 0% to/from 50% rated load 50% to/from 0% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 4, 8 4 5,6 4 5,6 4,5,6 4,5,6 4,5,6 4,5,6 01 01 01 -300 -450 -500 -750 1500 TTLINE 4,5,6 4,5,6 9 01 01 01 01 800 600 20 20 38 s mVpk ms ms g rated load VTonOS IOUT = o and 100% rated load TonD TrLF IOUT = o and 100% rated load 4,5,6 4,5,6 Notes to Specifications 1. Parameter guaranteed by line and load regulation tests. 2. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. 3. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 4. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table II. 5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 6. Load step transition time between 2.0s and 10s. 7. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 8. Input step transition time between 2.0s and 10s. 9. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1) while power is applied to the input is unlimited. www.irf.com 7 AHF28XX Series Specifications Absolute Maximum Ratings Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2815S Table IV. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1 2 Group A Subgroups Device Types Min Limits Unit Max 15.15 15.30 800 50 35 75 V mA mV p-p VOUT IOUT VRIP IOUT = 0 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 1 2,3 1,2,3 All All All 14.85 14.70 Output ripple voltage Line regulation VRLINE All mV Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load Input to output or any pin All 150 mV 18 1,2,3 All 50 1,2,3 1 2,3 1 All All 80 77 100 20 mA p-p % mA Input current IIN Input ripple current Efficiency 2 IRIP EFF Isolation ISO to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Tc = +25C Overload Short circuit IOUT = 100% rated load 5 All M Capacitive load 3, 4 CL PD 4 1 1,2,3 4,5,6 All All All 01, 04 250 250 275 02, 05 03, 06 200 6.0 2.0 300 270 300 F W Power dissipation load fault Switching frequency FS KHz For Notes to Specifications, refer to page 9 8 www.irf.com AHF28XX Series Table IV. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 6 changes Recovery time step transient load 6, 7 changes Output response to transient step line changes Recovery time transient step line changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 AHF2815S Limits Unit Group A Subgroups Device Types Min Max +800 mVpk +750 100 s ms 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load TTLOAD 50% to/from 100% rated load 0% to/from 50% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load Input step 16V to/from 40Vdc, IOUT = 100% rated load IOUT = o and 100% rated load IOUT = o and 100% rated load 9 4, 7, 8 4, 8 4,5,6 All 4,5,6 4 5,6 4 5,6 04 4,5,6 05 06 4,5,6 4,5,6 4,5,6 4,5,6 01 All All All All -800 -1000 200 5.0 10 -1000 +1000 mVpk TTLINE VTonOS TonD TrLF 500 750 12 12 38 s mVpk ms ms g Notes to Specifications 1. Parameter guaranteed by line and load regulation tests. 2. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. 3. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 4. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table III. 5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 6. Load step transition time between 2.0s and 10s. 7. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 8. Input step transition time between 2.0s and 10s. 9. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 2) while power is applied to the input is unlimited. www.irf.com 9 AHF28XX Series Specifications A b so lu te M axim u m R ating s In pu t vo ltag e S old erin g te m p era ture O pe ratin g case te m p era ture S tora ge ca se tem pe ratu re -0 .5V to + 50 V 3 00 C fo r 10 se co nd s -5 5C to + 12 5C -6 5C to + 13 5C AHF2805D Table V. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1, 2 Group A Subgroups Device Types Min Limits Unit Max 5.05 5.10 1.08 60 V A mV p-p VOUT IOUT 3 IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 4.95 4.90 0.12 Output ripple voltage VRIP Line regulation 4 VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1,2,3 01 30 mV Load regulation 4 VRLOAD IOUT = 0%, 50% and 100% rated load 5 1,2,3 1,2,3 01 01 30 10 12 mV % Cross regulation VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) IIN tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, Tc = +25C, Input to output or any pin to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Input current 1,2,3 01 60 mA Input ripple current Efficiency 4 3, 4 IRIP EFF 1,2,3 1,3 2 1 01 01 75 72 100 50 mA p-p % Isolation ISO 01 M Capacitive load 6, 7 CL Tc = +25C, total for both outputs Overload, Tc = +25C Short circuit, Tc = +25C IOUT = 100% rated load 4 01 200 6.0 2.0 500 600 F Power dissipation load fault Switching frequency PD FS 1,2,3 4,5,6 01 01 W KHz For Notes to Specifications, refer to page 11 10 www.irf.com AHF28XX Series Table V. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 4, 9 changes Recovery time step transient load 4, 9,10 changes Output response to transient step line 4, 7, 11 changes Recovery time transient step line 4, 7, 10, 11 changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 4 AHF2805D Limits Unit Group A Subgroups Device Types Min Max +400 mVpk +800 70 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load TTLOAD 50% to/from 100% rated load 0% to/from 50% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load TTLINE Input step 16V to/from 40Vdc, IOUT = 100% 4,5,6 01 4,5,6 4,5,6 01 4,5,6 -400 -800 s 100 4,5,6 01 -400 +400 mVpk 4,5,6 4,5,6 9 01 01 01 01 1200 600 25 25 38 s mVpk ms ms g rated load VTonOS IOUT = o and 100% rated load TonD TrLF IOUT = o and 100% rated load 4,5,6 4,5,6 Notes to Specifications 1. Parameter guaranteed by line load and cross regulation tests. 2. Up to 90 percent of full power is available from either output provided the total output does not exceed 12W. 3. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. 4. Load current split equally between +V OUT and -VOUT. 5. 1.2 watt load on output under test, 1.2W to 10.8W load change on other output. 6. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 7. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table IV. 8. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 9. Load step transition time between 2.0s and 10s. 10. Recovery time is measured from the initiation of the transient to where V OUT has returned to within 1.0 percent of VOUT at 50 percent load. 11. Input step transition time between 2.0s and 10s. 12. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1) while power is applied to the input. www.irf.com 11 AHF28XX Series Specifications Absolute Maximum Ratings Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2812D Table VI. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1, 2 Group A Subgroups Device Types Min Limits Unit Max 12.12 12.24 900 60 V mA mV p-p VOUT IOUT 3 IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 11.88 11.76 100 Output ripple voltage VRIP Line regulation 4 VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1,2,3 01 30 mV Load regulation 4 VRLOAD IOUT = 0%, 50% and 100% rated load 5 1,2,3 1,2,3 01 01 30 3.0 12 mV % Cross regulation VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) IIN tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, Tc = +25C Input to output or any pin to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Input current 1,2,3 01 60 mA Input ripple current Efficiency 4 3, 4 IRIP EFF 1,2,3 1,3 2 1 01 01 77 74 100 50 mA p-p % Isolation ISO 01 M Capacitive load 6, 7 CL Tc = +25C, total for both outputs Overload, Tc = +25C Short circuit, Tc = +25C IOUT = 100% rated load 4 01 200 6.0 2.0 500 600 F Power dissipation load fault Switching frequency PD FS 1,2,3 4,5,6 01 01 W KHz For Notes to Specifications, refer to page 13 12 www.irf.com AHF28XX Series Table VI. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 4, 9 changes Recovery time step transient load 4, 9,10 changes Output response to transient step line 4, 7, 11 changes Recovery time transient step line 4, 7, 10, 11 changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 4 AHF2812D Limits Unit Group A Subgroups Device Types Min Max +200 mVpk +800 70 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load TTLOAD 50% to/from 100% rated load 0% to/from 50% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load TTLINE VTonOS TonD TrLF Input step 16V to/from 40Vdc, IOUT = 100% rated load IOUT = o and 100% rated load IOUT = o and 100% rated load 9 4,5,6 01 4,5,6 4,5,6 01 4,5,6 -200 -800 s 1000 4,5,6 01 -750 +750 mVpk 4,5,6 4,5,6 4,5,6 4,5,6 01 01 01 01 1200 600 25 25 38 s mVpk ms ms g Notes to Specifications 1. 2. 3. 4. 5. 6. Parameter guaranteed by line load and cross regulation tests. Up to 90 percent of full power is available from either output provided the total output does not exceed 12W. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. Load current split equally between +VOUT and -V OUT. 1.2 watt load on output under test, 1.2W to 10.8W load change on other output. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive oad in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 7. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table V. 8. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 9. Load step transition time between 2.0s and 10s. 10. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 11. Input step transition time between 2.0s and 10s. 12. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1) while power is applied to the input. www.irf.com 13 AHF28XX Series Specifications Absolute Maximum Ratings Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50V 300C for 10 seconds -55C to +125C -65C to +135C AHF2815D Table VII. Electrical Performance Characteristics Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output voltage Output current 1, 2 Group A Subgroups Device Types Min Limits Unit Max 15.15 15.30 720 60 V mA mV p-p VOUT IOUT 3 IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 1 2,3 1,2,3 1,2,3 01 01 01 14.85 14.70 80 Output ripple voltage VRIP Line regulation 4 VRLINE 1,2,3 01 35 mV Load regulation 4 VRLOAD IOUT = 0%, 50% and 100% rated load 5 1,2,3 1,2,3 01 01 35 3.0 12 mV % Cross regulation VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) IIN tied to input return (pin 7) IOUT = 0, inhibit (pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, Tc = +25C Input to output or any pin to case (except pin 6) at 500Vdc, Tc = +25C No effect on dc performance, Input current 1,2,3 01 55 mA Input ripple current Efficiency 4 3, 4 IRIP EFF 1,2,3 1,3 2 1 01 01 78 75 100 50 mA p-p % Isolation ISO 01 M Capacitive load 6, 7 CL Tc = +25C, total for both outputs Overload, Tc = +25C Short circuit, Tc = +25C IOUT = 100% rated load 4 01 200 6.0 2.5 500 600 F Power dissipation load fault Switching frequency 4 PD FS 1,2,3 4,5,6 01 01 W KHz For Notes to Specifications, refer to page 15 14 www.irf.com AHF28XX Series Table VII. Electrical Performance Characteristics - continued Test Symbol Conditions -55C Tc +125C Vin = 28Vdc 5%, CL = 0 Unless otherwise specified Output response to step transient load 4, 9 changes Recovery time step transient load 4, 9,10 changes Output response to transient step line 4, 7, 11 changes Recovery time transient step line 4, 7, 10, 11 changes Turn on overshoot Turn on delay Load fault recovery Weight 4, 9 4 AHF2815D Limits Unit Group A Subgroups Device Types Min Max +200 mVpk +800 70 50% to/from 100% VOTLOAD rated load 0% to/from 50% rated load TTLOAD 50% to/from 100% rated load 0% to/from 50% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load TTLINE VTonOS TonD TrLF Input step 16V to/from 40Vdc, IOUT = 100% rated load IOUT = o and 100% rated load IOUT = o and 100% rated load 9 4,5,6 01 4,5,6 4,5,6 01 4,5,6 -200 -800 s 500 4,5,6 01 -750 +750 mVpk 4,5,6 4,5,6 4,5,6 4,5,6 01 01 01 01 1200 750 25 25 38 s mVpk ms ms g Notes to Specifications Parameter guaranteed by line load and cross regulation tests. Up to 90 percent of full power is available from either output provided the total output does not exceed 12W. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz. Load current split equally between +VOUT and -V OUT. 1.2 watt load on output under test, 1.2W to 10.8W load change on other output. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 7. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table VI. 8. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 9. Load step transition time between 2.0s and 10s. 10. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0 percent of VOUT at 50 percent load. 11. Input step transition time between 2.0s and 10s. 12. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1) while power is applied to the input. 1. 2. 3. 4. 5. 6. www.irf.com 15 AHF28XX Series Application Information Inhibit Function (Enable) Connecting the enable input (Pin 1) to input common (Pin 7) will cause the converter to shut down. It is recommended that the enable pin be driven by an open collector device capable of sinking at least 400A of current. The open circuit voltage of the enable input is 15 1.0VDC. If the inhibit function is not used, this input can be left unconnected because it is internally pulled-up. Hence, if TAMBIENT = +25C, the DC/DC converter case temperature will be approximately 100C if no heat sink or air flow is provided. To calculate the heat sink area required to maintain a specific case temperature rise, the above equation may be manipulated as follows: Thermal Management Assuming that there is no forced air flow, the package temperature rise above ambient (T) may be calculated using the following expression: A HEAT SINK = 0.85 80 -1.43 - PKG T 80 A -0.7p 0.85 (C) where A = the effective surface area in square inches (including heat sink if used), P = power dissipation in watts. The total surface area of the AHF package is 4.9 square inches. If a worse case full load efficiency of 78% is assumed, then the case temperature rise can be calculated as follows: As an example, if a maximum case temperature rise of 50C rise above ambient is desired, then the required effective heat sink area is: 50 HEATSINK = 0.85 80(3.4) -1.43 - 4.9 = 3.75in.2 1 1 P = POUT - 1 = 12 - 1 = 3.4W 0.78 Eff T = 80 (4.9)-0.7 (3.4)0.85 = 74C Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-91600 5962-94568 5962-94563 5962-05205 5962-92111 5962-92351 Vendor Cage Code 52467 52467 52467 52467 52467 52467 IR Standard Part Number AHF2805S AHF2812S AHF2815S AHF2805D AHF2812D AHF2815D 16 www.irf.com AHF28XX Series ( Single Output ) Block Diagram 8 +Input Under-Voltage Detector Primary Housekeeping Supply 4 +Vout EMI Filter 3 Output Return 1 Enable Input 6 Case Drive Pulse Width FB Modulator CS Error Amp & Ref Input Return 7 ( Dual Output ) Block Diagram 8 +Input Under-Voltage Detector EMI Filter 2 +Vout 3 Primary Housekeeping Supply Output Return 1 Enable Input 6 Case 4 -Vout Drive Pulse Width FB Modulator CS Error Amp & Ref Input Return 7 www.irf.com 17 AHF28XX Series Mechanical Outlines Non-Flanged 0.030 dia., 8 pins (0.760) 0.205 (5.21) 8 1 2 0.905 (22.99) 1.105 (28.07) 1.450 (36.83) 0.705 (17.91) 0.505 (12.83) 7 3 4 6 5 0.800 (20.32) 1.120 (28.45) 0.090 R Typ (2.290) 0.260 (6.600) 0.330 (8.380) MAX Flanged Pin Designation Pin # 1 2 3 4 5 6 7 8 Single Output Enable Input NC Output Return + Output NC Case Input Return +Input Dual Output Enable Input + Output Output Return - Output NC Case Input Return +Input 18 www.irf.com AHF28XX Series Device Screening Requirement Temperature Range Element Evaluation Non-Destructive Bond Pull Internal Visual Temperature Cycle Constant Acceleration PIND Burn-In Final Electrical ( Group A ) PDA Seal, Fine and Gross Radiographic External Visual MIL-PRF-38534 2023 2017 1010 2001, Y1 Axis 2020 1015 MIL-PRF-38534 & Specification MIL-PRF-38534 1014 2012 2009 N/A Cond A N/A N/A Cond A, C N/A Yes MIL-STD-883 Method No Suffix N/A N/A ES d HB CH -55C to +125C Class H N/A Yes Cond C 3000 Gs N/A -55C, +25C, +125C 10% Cond A, C N/A Yes -20C to +85C -55C to +125C N/A N/A Yes Cond B 500 Gs N/A e -55C to +125C N/A N/A Yes Cond C 3000 Gs N/A -55C, +25C, +125C N/A Cond A, C N/A Yes c N/A N/A N/A N/A 25C 48 hrs@hi temp 25C d 160 hrs@125C 160 hrs@125C c Notes: Best commercial practice Sample tests at low and high temperatures -55C to +105C for AHE, ATO, ATW Part Numbering AHF 28 05 S F /CH Model Input Voltage Nominal 28 = 28V Screening Level (Please refer to Screening Table) No Suffix, ES, HB, CH Package Style Output Voltage Single - 03R3 = 3.3V 05 = 5V 12 =12V 15 =15V Dual - 05 = 5V 12 = 12V 15 = 15V F = Flange Blank = Non-Flanged Output S = Single D = Dual WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SAN JOSE: 2520Junction Avenue, San Jose, California 95134, Tel: (408) 434-5000 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 03/2010 www.irf.com 19 |
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