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. 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 -55°C to +125°C Operation Constant Switching Frequency (550KHz Nominal) Standard Microcircuit Drawings Available 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. www.irf.com 1 03/09/10 AHF28XX Series Specifications AHF2803R3S Absolute M axim um Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds O perating case temperature -55°C to +125°C Storage case tem perature -65°C to +135°C Table I. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage Output current 1 IOUT Output ripple voltage 2 VRIP 1 IOUT = 0 2,3 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 01 Unit Limits Min Max 3.26 3.34 3.23 3.36 V 1,2,3 01 3000 mA 1,2,3 01 60 mV p-p 1,2,3 01 25 mV 1,2,3 01 50 mV 1,2,3 01 VIN = 16, 28, and 40Vdc, Line regulation VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 30 inhibit (pin 1) = open Input ripple current 2 IRIP IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz Efficiency EFF IOUT = 100% rated load Isolation ISO to case (except pin 6) 1,2,3 1 2,3 50 01 01 72 mA p-p % 70 Input to output or any pin 1 01 100 4 01 500 MΩ at 500Vdc, Tc = +25°C Capacitive load 3, 4 Power dissipation load fault Switching frequency CL No effect on dc performance, Tc = +25°C 5 PD Overload Short circuit 1 01 6.0 1,2,3 01 2.0 FS IOUT = 100% rated load 4,5,6 01 500 600 µF W KHz For Notes to Specifications, refer to page 3 2 www.irf.com AHF28XX Series Table I. Electrical Performance Characteristics - continued Test Symbol AHF2803R3S Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified Output response to step transient load 6 changes 50% to/from 100% VOTLOAD 4,5,6 rated load 0% to/from 50% 4,5,6 rated load 50% to/from 100% rated load TTLOAD 0% to/from 50% rated load Output response to transient step line changes Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% Turn on overshoot Unit Min Max -300 +300 -500 +500 01 Recovery time step transient load 6, 7 changes Recovery time transient step line changes Limits 50% to/from 0% rated load 4,5,6 4,5,6 01 4,5,6 mVpk 70 µs 1200 8.0 µs ms 4,5,6 01 500 mVpk 4,5,6 01 800 µs 4, 8 TTLINE rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 rated load VTonOS IOUT = o and 100% rated load Turn on delay Load fault 4, 9 recovery Weight TonD TrLF 9 IOUT = o and 100% rated load 4,5,6 01 600 mVpk 4,5,6 01 20 ms 4,5,6 01 20 ms 38 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 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2805S Absolute M axim um Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds O perating case temperature -55°C to +125°C Storage case tem perature -65°C to +135°C Table II. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage Output current 1 IOUT Output ripple voltage 2 VRIP 1 IOUT = 0 2,3 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 01 Unit Limits Min Max 4.95 5.05 4.90 5.10 V 1,2,3 01 2400 mA 1,2,3 01 60 mV p-p 1,2,3 01 25 mV 1,2,3 01 50 mV 1,2,3 01 VIN = 16, 28, and 40Vdc, Line regulation VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 30 inhibit (pin 1) = open Input ripple current 2 IRIP IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz Efficiency EFF IOUT = 100% rated load Isolation ISO to case (except pin 6) 1,2,3 1 2,3 01 01 50 76 mA p-p % 74 Input to output or any pin 1 01 100 4 01 500 MΩ at 500Vdc, Tc = +25°C Capacitive load 3, 4 Power dissipation load fault Switching frequency CL No effect on dc performance, Tc = +25°C 5 PD Overload Short circuit 1 01 6.0 1,2,3 01 2.0 FS IOUT = 100% rated load 4,5,6 01 500 600 µF W KHz For Notes to Specifications, refer to page 5 4 www.irf.com AHF28XX Series Table II. Electrical Performance Characteristics - continued Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified Output response to step transient load 6 changes 50% to/from 100% VOTLOAD 4,5,6 rated load 0% to/from 50% 4,5,6 rated load 50% to/from 100% rated load TTLOAD 0% to/from 50% rated load Output response to transient step line changes Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% Turn on overshoot 50% to/from 0% rated load Min Max -300 +300 -500 +500 4,5,6 4,5,6 01 4,5,6 mVpk 70 µs 1200 8.0 µs ms 4,5,6 01 500 mVpk 4,5,6 01 800 µs 4,5,6 01 600 mVpk 4,5,6 01 20 ms 4,5,6 01 20 ms 38 g 4, 8 TTLINE rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 rated load VTonOS IOUT = o and 100% rated load Turn on delay Load fault recovery Weight Unit Limits 01 Recovery time step transient load 6, 7 changes Recovery time transient step line changes AHF2805S 4, 9 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2812S Absolute Maximum Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds Operating case temperature -55°C to +125°C Storage case temperature -65°C to +135°C Table III. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage 1 IOUT Output current 2 Output ripple voltage VRIP 1 IOUT = 0 2,3 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 01 Unit Limits Min Max 11.88 12.12 11.76 12.24 V 1,2,3 01 1000 mA 1,2,3 01 60 mV p-p 1,2,3 01 50 mV 1,2,3 01 50 mV 1,2,3 01 VIN = 16, 28, and 40Vdc, Line regulation VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, Load regulation VRLOAD IOUT = 0%, 50% and 100% rated load IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 50 inhibit (pin 1) = open 2 IOUT = 100% rated load Input ripple current IRIP Efficiency EFF IOUT = 100% rated load Isolation ISO to case (except pin 6) B.W. = 20 Hz to 2.0MHz 1,2,3 1 2,3 50 01 01 78 mA p-p % 75 Input to output or any pin 1 01 4 01 100 MΩ at 500Vdc, Tc = +25°C 3, 4 Capacitive load Power dissipation load fault Switching frequency CL No effect on dc performance, Tc = +25°C 5 500 PD Overload Short circuit 1 01 6.0 1,2,3 01 2.0 FS IOUT = 100% rated load 4,5,6 01 500 600 µF W KHz For Notes to Specifications, refer to page 7 6 www.irf.com AHF28XX Series Table III. Electrical Performance Characteristics - continued Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types 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 50% to/from 100% VOTLOAD 0% to/from 50% 4 -300 +300 -450 +450 -500 +500 -750 +750 01 4,5,6 TTLOAD 0% to/from 50% rated load 4,5,6 50% to/from 0% rated load 4,5,6 Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% Max 5,6 5,6 50% to/from 100% rated load Unit Limits Min 4 rated load 01 mVpk 100 µs 1500 10 µs ms 4,5,6 01 1500 mVpk 4,5,6 01 800 µs 4,5,6 01 600 mVpk 4,5,6 01 20 ms 4,5,6 01 20 ms 38 g 4, 8 TTLINE rated load Input step 16V to/from 40Vdc, IOUT = 100% 4, 7, 8 rated load VTonOS IOUT = o and 100% rated load Turn on delay Load fault recovery Weight rated load AHF2812S 4, 9 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 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2815S Absolute Maximum Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds Operating case temperature -55°C to +125°C Storage case temperature -65°C to +135°C Table IV. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage Output current 1 IOUT Output ripple voltage 2 VRIP 1 IOUT = 0 2,3 VIN = 16, 28, and 40Vdc VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, Line regulation VRLINE Iout = 0%, 50% and 100% rated load All Unit Limits Min Max 14.85 15.15 14.70 15.30 V 1,2,3 All 800 mA 1,2,3 All 50 mV p-p 1 ±35 All 2,3 mV ±75 VIN = 16, 28, and 40Vdc, Load regulation VRLOAD IOUT = 0%, 50% and 100% 1,2,3 All 1,2,3 All ±150 mV rated load IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 18 mA 50 inhibit (pin 1) = open Input ripple current 2 IRIP IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz Efficiency EFF IOUT = 100% rated load Isolation ISO to case (except pin 6) 1,2,3 1 2,3 All All 20 80 mA p-p % 77 Input to output or any pin 1 All 4 All 100 MΩ at 500Vdc, Tc = +25°C Capacitive load 3, 4 Power dissipation load fault Switching frequency CL No effect on dc performance, Tc = +25°C 5 200 PD Overload Short circuit 1 All 6.0 1,2,3 All 2.0 01, 04 250 300 FS IOUT = 100% rated load 4,5,6 02, 05 250 270 03, 06 275 300 µF W KHz For Notes to Specifications, refer to page 9 8 www.irf.com AHF28XX Series AHF2815S Table IV. Electrical Performance Characteristics - continued Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types 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 50% to/from 100% VOTLOAD 4,5,6 rated load TTLOAD 50% to/from 100% rated load TonD IOUT = o and 100% rated load +800 -1000 +750 mVpk 100 200 All 5.0 10 µs ms 04 4, 8 VTonOS -800 4 4,5,6 05 -1000 +1000 mVpk 06 rated load Input step 16V to/from 40Vdc, IOUT = 100% Turn on overshoot Max 5,6 Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% rated load IOUT = o and 100% rated load Min 5,6 4 0% to/from 50% rated load TTLINE Unit All 0% to/from 50% Recovery time transient step line changes 4,5,6 01 500 µs 4, 7, 8 Turn on delay Load fault recovery Weight 4,5,6 rated load Limits 4, 9 TrLF 9 4,5,6 All 750 mVpk 4,5,6 All 12 ms 4,5,6 All 12 ms 38 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2805D Specifications A b so lu te M axim u m R ating s In pu t vo ltag e -0 .5V to + 50 V S old erin g te m p era ture 3 00 °C fo r 10 se co nd s O pe ratin g case te m p era ture -5 5°C to + 12 5°C S tora ge ca se tem pe ratu re -6 5°C to + 13 5°C Table V. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage 1, 2 IOUT Output current 3 Output ripple voltage VRIP IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 1 2,3 01 Unit Limits Min Max ±4.95 ±5.05 ±4.90 ±5.10 0.12 1.08 A V 1,2,3 01 1,2,3 01 60 mV p-p 1,2,3 01 30 mV 1,2,3 01 30 mV 1,2,3 01 ±10 % 1,2,3 01 VIN = 16, 28, and 40Vdc, 4 VRLINE Iout = 0%, 50% and 100% Line regulation rated load VIN = 16, 28, and 40Vdc, 4 VRLOAD IOUT = 0%, 50% and 100% Load regulation rated load Cross regulation 5 VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 60 inhibit (pin 1) = open 3, 4 Input ripple current Efficiency 4 IRIP EFF Isolation ISO IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, 1,2,3 1,3 01 01 Tc = +25°C, Input to output or any pin 2 to case (except pin 6) 1 01 4 01 1,2,3 01 4,5,6 01 50 75 mA p-p % 72 100 MΩ at 500Vdc, Tc = +25°C No effect on dc performance, 6, 7 Capacitive load CL Tc = +25°C, 200 µF total for both outputs Power dissipation load fault Switching frequency PD FS Overload, Tc = +25°C Short circuit, Tc = +25°C IOUT = 100% rated load 6.0 2.0 500 600 W KHz For Notes to Specifications, refer to page 11 10 www.irf.com AHF28XX Series AHF2805D Table V. Electrical Performance Characteristics - continued Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types 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 50% to/from 100% VOTLOAD TTLOAD 0% to/from 50% 4,5,6 50% to/from 100% rated load Min Max -400 +400 -800 +800 mVpk 70 4,5,6 µs 01 0% to/from 50% rated load 100 4,5,6 Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% 4,5,6 01 4,5,6 -400 +400 mVpk 01 1200 µs rated load Input step 16V to/from 40Vdc, IOUT = 100% rated load VTonOS IOUT = o and 100% rated load Load fault recovery Weight Unit 01 rated load TTLINE 4 4,5,6 rated load Limits 4, 9 TonD TrLF IOUT = o and 100% rated load 9 4,5,6 01 600 mVpk 4,5,6 01 25 ms 4,5,6 01 25 ms 38 g 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2812D Absolute Maximum Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds Operating case temperature -55°C to +125°C Storage case temperature -65°C to +135°C Table VI. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage Output current 1, 2 IOUT Output ripple voltage 3 VRIP IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 1 2,3 01 Unit Limits Min Max ±11.88 ±12.12 ±11.76 ±12.24 100 900 mA V 1,2,3 01 1,2,3 01 60 mV p-p 1,2,3 01 30 mV 1,2,3 01 30 mV 1,2,3 01 3.0 % 1,2,3 01 VIN = 16, 28, and 40Vdc, Line regulation 4 VRLINE Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, Load regulation 4 VRLOAD IOUT = 0%, 50% and 100% rated load 5 VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) Cross regulation IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 60 inhibit (pin 1) = open Input ripple current Efficiency 3, 4 4 IRIP EFF Isolation ISO IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, 1,2,3 1,3 01 01 Tc = +25°C Input to output or any pin 2 to case (except pin 6) 1 01 4 01 1,2,3 01 4,5,6 01 50 77 mA p-p % 74 100 MΩ at 500Vdc, Tc = +25°C No effect on dc performance, Capacitive load 6, 7 CL Tc = +25°C, 200 µF total for both outputs Power dissipation load fault Switching frequency PD FS Overload, Tc = +25°C Short circuit, Tc = +25°C IOUT = 100% rated load 6.0 2.0 500 600 W KHz For Notes to Specifications, refer to page 13 12 www.irf.com AHF28XX Series AHF2812D Table VI. Electrical Performance Characteristics - continued Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types 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 50% to/from 100% VOTLOAD TTLOAD 4,5,6 50% to/from 100% rated load Min Max -200 +200 -800 +800 mVpk 70 4,5,6 µs 01 4,5,6 Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% 1000 4,5,6 01 4,5,6 -750 +750 mVpk 01 1200 µs rated load Input step 16V to/from 40Vdc, IOUT = 100% VTonOS rated load IOUT = o and 100% rated load TonD IOUT = o and 100% rated load Load fault recovery Weight 0% to/from 50% 0% to/from 50% rated load TTLINE 4 Unit 01 rated load Recovery time transient step line 4, 7, 10, 11 changes Turn on overshoot Turn on delay 4,5,6 rated load Limits 4, 9 TrLF 9 4,5,6 01 600 mVpk 4,5,6 01 25 ms 4,5,6 01 25 ms 38 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 AHF2815D Specifications Absolute Maximum Ratings Input voltage -0.5V to +50V Soldering temperature 300°C for 10 seconds Operating case temperature -55°C to +125°C Storage case temperature -65°C to +135°C Table VII. Electrical Performance Characteristics Test Symbol Conditions Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types Unless otherwise specified VOUT Output voltage 1, 2 IOUT Output current 3 Output ripple voltage VRIP IOUT = 0 VIN = 16, 28, and 40Vdc each output VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz 1 2,3 01 Unit Limits Min Max ±14.85 ±15.15 ±14.70 ±15.30 80 720 mA V 1,2,3 01 1,2,3 01 60 mV p-p 1,2,3 01 35 mV 1,2,3 01 35 mV 1,2,3 01 3.0 % 1,2,3 01 VIN = 16, 28, and 40Vdc, 4 VRLINE Line regulation Iout = 0%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, 4 VRLOAD IOUT = 0%, 50% and 100% Load regulation rated load Cross regulation 5 VRCROSS 10% to 90% load changes IOUT = 0, inhibit (pin 1) IIN Input current tied to input return (pin 7) IOUT = 0, 12 mA 55 inhibit (pin 1) = open 3, 4 Input ripple current Efficiency 4 IRIP EFF Isolation ISO IOUT = 100% rated load B.W. = 20 Hz to 2.0MHz IOUT = 100% rated load, 1,2,3 1,3 01 01 Tc = +25°C Input to output or any pin 2 to case (except pin 6) 1 01 4 01 1,2,3 01 4,5,6 01 50 78 mA p-p % 75 100 MΩ at 500Vdc, Tc = +25°C No effect on dc performance, 6, 7 CL Capacitive load Tc = +25°C, 200 µF total for both outputs Power dissipation PD load fault Switching frequency 4 FS Overload, Tc = +25°C Short circuit, Tc = +25°C IOUT = 100% rated load 6.0 2.5 500 600 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 Group A Device -55°C ≤ Tc ≤ +125°C Vin = 28Vdc ±5%, CL = 0 Subgroups Types 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 50% to/from 100% VOTLOAD TTLOAD 4 Limits Unit Min Max -200 +200 -800 +800 mVpk 01 0% to/from 50% 4,5,6 rated load 50% to/from 100% rated load 70 4,5,6 µs 01 500 4,5,6 0% to/from 50% rated load Input step 16V to/from VOTLINE 40Vdc, IOUT = 100% 4,5,6 01 4,5,6 -750 +750 mVpk 01 1200 µs 4,5,6 01 750 mVpk 4,5,6 01 25 ms 4,5,6 01 25 ms 38 g rated load TTLINE Input step 16V to/from 40Vdc, IOUT = 100% VTonOS rated load IOUT = o and 100% rated load Recovery time transient step line 4, 7, 10, 11 changes Turn on overshoot Turn on delay 4,5,6 rated load AHF2815D Load fault 4, 9 recovery Weight TonD TrLF 9 IOUT = o and 100% rated load 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 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 2.0µs and 10µs. 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 2.0µs and 10µs. 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 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 400µA 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 = +25°C, the DC/DC converter case temperature will be approximately 100°C 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 A HEAT SINK = Assuming that there is no forced air flow, the package temperature rise above ambient (∆T) may be calculated using the following expression: ∆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: ⎡ ∆Τ ⎤ ⎢ 0.85 ⎥ ⎣ 80Ρ ⎦ −1.43 − Α PKG As an example, if a maximum case temperature rise of 50°C rise above ambient is desired, then the required effective heat sink area is: ⎡ ⎤ 50 Α 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 = 74°C Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 5962-91600 5962-94568 5962-94563 5962-05205 5962-92111 5962-92351 16 Vendor Cage Code 52467 52467 52467 52467 52467 52467 IR Standard Part Number AHF2805S AHF2812S AHF2815S AHF2805D AHF2812D AHF2815D www.irf.com AHF28XX Series ( Single Output ) Block Diagram EMI Filter 8 +Input Under-Voltage Detector Primary Housekeeping Supply 1 4 +Vout 3 Output Return 2 +Vout Enable Input 6 Drive Case Pulse Width FB Modulator CS Error Amp & Ref Input Return 7 ( Dual Output ) Block Diagram EMI Filter 8 +Input Under-Voltage Detector 1 Enable Input 6 Case Primary Housekeeping Supply 3 Output Return 4 -Vout Drive Pulse Width FB Modulator CS Error Amp & Ref Input Return 7 www.irf.com 17 AHF28XX Series Mechanical Outlines Non-Flanged 0.205 (5.21) 0.030 dia., 8 pins (0.760) 8 1 0.905 (22.99) 2 7 0.505 (12.83) 1.105 (28.07) 3 1.450 (36.83) 4 6 0.705 (17.91) 5 0.800 (20.32) 0.090 R Typ (2.290) 1.120 (28.45) 0.260 (6.600) 0.330 (8.380) MAX Flanged Pin Designation 18 Pin # Single Output Dual Output 1 Enable Input Enable Input 2 NC + Output 3 Output Return Output Return 4 + Output - Output 5 NC NC 6 Case Case 7 Input Return Input Return 8 +Input +Input www.irf.com AHF28XX Series Device Screening Requirement MIL-STD-883 Method Temperature Range Element Evaluation Non-Destructive Bond Pull Internal Visual No Suffix ES d -20°C to +85°C -55°C to +125°C HB e -55°C to +125°C CH -55°C to +125°C MIL-PRF-38534 N/A N/A N/A Class H 2023 N/A N/A N/A N/A 2017 c Yes Yes Yes Temperature Cycle 1010 N/A Cond B Cond C Cond C Constant Acceleration 2001, Y1 Axis N/A 500 Gs 3000 Gs 3000 Gs PIND 2020 N/A N/A N/A N/A 48 hrs@hi temp Burn-In 1015 N/A Final Electrical MIL-PRF-38534 25°C 25°C d 160 hrs@125°C 160 hrs@125°C -55°C, +25°C, -55°C, +25°C, ( Group A ) & Specification +125°C +125°C PDA MIL-PRF-38534 N/A N/A N/A 10% Seal, Fine and Gross 1014 Cond A Cond A, C Cond A, C Cond A, C Radiographic 2012 N/A External Visual 2009 c N/A N/A N/A Yes Yes Yes Notes: Best commercial practice Sample tests at low and high temperatures -55°C to +105°C for AHE, ATO, ATW Part Numbering AHF 28 05 S F /CH Model Input Voltage Nominal 28 = 28V Output Voltage Single – 03R3 = 3.3V 05 = 5V 12 =12V 15 =15V Dual – 05 = ±5V 12 = ±12V 15 = ±15V Screening Level (Please refer to Screening Table) No Suffix, ES, HB, CH Package Style 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