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| PD - 94554A AHE28XXS SERIES ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS Description The AHE28XXS Series of DC/DC converters feature high power density and an extended temperature range for use in military and industrial applications. Designed to MIL-STD-704D input requirements, these devices have nominal 28VDC inputs with +5V, +12V and +15V single outputs to satisfy a wide range of requirements. The circuit design incorporates a pulse width modulated push-pull topology operating in the feed-forward mode at a nominal switching frequency of 250KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. The advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability and radiation tolerance than devices incorporating optical feedback circuits. Three standard temperature grades are offered with screening options. Refer to Part Number section. They can be provided in a standard plug-in package for PC mounting or in a flanged package for more severe environments. These converters are manufactured in a facility certified to MIL-PRF-38534. All processes used to manufacture these converters have been qualified to enable Advanced Analog to deliver compliant devices. Two screening grades are available to satisfy a wide range of requirements. The CH grade converters are fully compliant to MIL-PRF-38534 for class H. The HB grade converters are processed to full class H screening but do not have class H element evaluation as required by MIL-PRF-38534. Both grades are fully tested and operate over the full military temperature range without derating of output power. Variations in electrical, mechanical and screening can be accommodated. 28V Input, Single Output AHE Features n 17 to 40 VDC Input Range (28 VDC Nominal) n 5V, 12V and 15V Outputs Available n Indefinite Short Circuit and Overload Protection 3 n 17 W/in Power Density n 15 and 20 Watts Output Power Models n Fast Loop Response for Superior Transient Characteristics n Operating Temperature Range from -55C to +125C Available n Popular Industry Standard Pin-Out n Resistance Seam Welded Case for Superior Long Term Hermeticity n Efficiencies up to 84% n Shutdown from External Signal n Military Screening n 325,000 hour MTBF at 85C (AUC) Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact Advanced Analog with specific requirements. www.irf.com 1 10/28/02 AHE28XXS Series Specifications TCASE = -55C to +85C, VIN = +28V 5% unless otherwise specified n ABSOLUTE MAXIMUM RATINGS Input Voltage Power Output Soldering 1 Temperature Range 1 -0.5V to 50V Internally limited, 17.5W typical for AHE2805S, 22.5W typical for AHE2812S and AHE2815S 300C for 10 seconds Operating -55C to +125C case Storage -65C to +135C AHE2805S AHE2812S AHE2815S Parameter Conditions -55C Tc +85C Vin = 28 Vdc 5%,CL = 0 Unless otherwise specified Min Typ Max Min Typ Max Min Typ Max Units Static Characteristic OUTPUT Voltage Current Ripple Accuracy 1 Power REGULATION Line Load INPUT 4 Voltage Range Current Ripple Current Efficiency Capacitive Load Load fault power 4 dissipation Isolation Dynamic Characteristic Step Load Changes Output Transient Recovery 2 VIN=17 to 40 VDC IOUT=0 to Full Load Full Load, DC to 1MHz TCASE = 25C, IOUT = 0 4.90 0.0 5.00 20 5.10 3000 60 5.05 1.0 1.0 40.0 18 35 50 11.76 0.0 12.00 30 12.24 1667 60 12.12 1.0 1.0 40.0 18 35 50 14.70 0.0 15.00 30 15.30 1333 60 15.15 1.0 1.0 40.0 18 35 50 VDC mADC mVp-p VDC W % % VDC mADC mADC mV p-p % F 4.95 15 5.00 0.5 0.5 11.88 20 12.00 0.5 0.5 14.85 20 15.00 0.5 0.5 VIN = 17 to 40 VDC IOUT = to Full Load 17.0 Inhibited No Load Full Load TCASE = +25C Half Load to Full Load No effect on performance 28.0 8 20 17.0 28.0 8 25 17.0 28.0 8 25 80 500 82 79 200 6 83 80 200 6 84 6 100 W M Input to Output @ 500Vdc 100 100 50% Load 100% Load No Load 50% Load 50% Load No Load 50% Load 100% Load No Load 50% Load 50% Load No Load 150 -300 +300 25 500 7 200 -400 +400 25 500 7 200 -400 +400 25 500 7 mVpk mVpk mVpk sec sec msec Step Line Changes Output Transient 2 Recovery Turn-On 3 Overshoot Delay Load Fault 4 Recovery Weight Input step 17 to 40VDC Input step 40 to 17VDC Input step 17 to 40VDC Input step 40 to 17VDC VIN = 17 to 40VDC IOUT = 0 to Full load VIN = 17 to 40VDC Standard Package Flange Package +180 -600 400 400 0 8 8 55 58 500 14 14 +180 -600 400 400 300 8 8 55 58 600 14 14 +180 -600 400 400 300 8 8 500 14 14 55 58 mVpk mVpk sec sec mVpk msec msec grams grams Notes to Specifications 1. Above +85C case temperature, derate output power linearly to 0 and maximum input voltage linearly to 42V at 115C case. 2. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1% of VOUT at 50% load. See typical waveforms. 3. Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin. 4. For operation at 16VDC, derate output power by 33%. 2 www.irf.com AHE28XXS Series Specifications TCASE = -55C to +105C, VIN = +28V 5% unless otherwise specified n ABSOLUTE5MAXIMUM RATINGS Input Voltage Power Output Soldering 1 Temperature Range -0.5V to 50V Internally limited, 17.5W typical for AHE2805S/ES, 22.5W typical for AHE2812S/ES and AHE2815S/ES 300C for 10 seconds Operating -55C to +125C case Storage -65C to +135C AHE2805S/ES AHE2812S/ES AHE2815S/ES Parameter Conditions -55C Tc +105C Vin = 28 Vdc 5%,CL = 0 Unless otherwise specified Min Typ Max Min Typ Max Min Typ Max Units Static Characteristic OUTPUT Voltage Current Ripple Accuracy 1 Power REGULATION Line Load INPUT 4 Voltage Range Current Ripple Current Efficiency Capacitive Load Load fault power 4 dissipation Isolation Dynamic Characteristic Step Load Changes Output Transient Recovery 2 VIN=17 to 40 VDC IOUT=0 to Full Load Full Load, DC to 1MHz TCASE = 25C, IOUT = 0 4.90 0.0 5.00 20 5.10 3000 60 5.05 11.76 0.0 12.00 30 12.24 1667 60 12.12 14.70 0.0 15.00 30 15.30 1333 60 15.15 VDC mADC mVp-p VDC W % % VDC mADC mADC mV p-p % F 4.95 15 5.00 11.88 20 12.00 14.85 20 15.00 VIN = 17 to 40 VDC IOUT = 0 to Full Load 17.0 Inhibited No Load Full Load TCASE = +25C Half load to Full load No effect on performance 0.5 0.5 28.0 8 20 78 500 82 1.0 1.0 40.0 18 35 50 17.0 0.5 0.5 28.0 8 25 79 200 83 1.0 1.0 40.0 18 35 50 17.0 0.5 0.5 28.0 8 25 80 200 84 1.0 1.0 40.0 18 35 50 6 Input to Output @ 500Vdc 100 100 6 100 6 W M 50% Load 100% Load No Load 50% Load 50% Load No Load 50% Load 100% Load No Load 50% Load 50% Load No Load 150 -300 +300 25 500 7 200 -400 +400 25 500 7 200 -400 +400 25 500 7 mVpk mVpk mVpk sec sec msec Step Line Changes Output Transient 2 Recovery TURN -ON Overshoot 3 Delay Load Fault Recovery Weight 4 Input step 17 to 40VDC Input step 40 to 17VDC Input step 17 to 40VDC Input step 40 to 17VDC VIN = 17 to 40VDC IOUT = 0 to Full Load VIN = 17 to 40VDC Standard Package Flange Package +180 -600 400 400 0 8 8 60 65 500 14 14 +180 -600 400 400 300 8 8 60 65 600 14 14 +180 -600 400 400 300 8 8 60 65 750 14 14 mVpk mVpk sec sec mVpk msec msec grams grams Notes to Specifications 1. 2. 3. 4. 5. Above +105C case temperature, derate output power linearly to 0 at 125C case. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1% of VOUT at 50% load. See typical waveforms. Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin. For operation at 16VDC, derate output power by 33%. Above +85C case temperature, derate maximum input voltage linearly to 33V at +125C case. www.irf.com 3 AHE28XXS Series Specifications n ABSOLUTE 1MAXIMUM RATINGS Input Voltage Power Output Soldering 1 Temp Range -0.5V to 50V Internally limited, 17.5W typical for AHE2805S/HB&CH, 22.5W typical for AHE281XS/HB&CH 300C for 10 seconds Operating -55C to +125C case Storage -65C to +135C Conditions -55C Tc +125C Vin = 28 Vdc 5%,CL = 0 Unless otherwise specified Parameter AHE2805S/HB&CH AHE2812S/HB&CH AHE2815S/HB&CH Min Static Characteristic OUTPUT Voltage Current Ripple Accuracy 1 Power REGULATION Line Load INPUT 4 Voltage Range Current Ripple Current Efficiency Capacitive Load Load fault power 5 dissipation Isolation Dynamic Characteristic Step Load Changes Output TC =25C Transient Recovery 2 Typ Max Min Typ Max Min Typ Max Units VIN=17 to 40 VDC IOUT=0 to Full Load Full Load, DC to 1MHz TCASE = 25C, IOUT = 0 4.90 0.0 5.00 20 5.10 3000 60 5.05 11.76 0.0 12.00 30 12.24 1667 60 12.12 14.70 0.0 15.00 30 15.30 1333 60 15.15 VDC mADC mVp-p VDC W mV mV VDC mADC mADC mV p-p % F W W M 4.95 15 5.00 11.88 20 12.00 14.85 20 15.00 VIN = 17 to 40 VDC TCASE = 25C IOUT = 0 to Full Load Inhibited No Load Full Load TCASE = +25C No effect on performance Short Circuit TC =25C Overload TC = 25C Input to Output @ 500Vdc 5 10 17.0 28.0 8 20 82 1000 50 40.0 18 35 50 50 17.0 28.0 8 25 83 1000 30 120 40.0 18 35 50 50 17.0 28.0 8 25 84 1000 35 150 40.0 18 35 50 80 500 80 200 4.5 6 80 200 4.5 6 4.5 6 100 100 100 50% Load 100% Load No Load 50% Load 50% Load No Load 50% Load 100% Load No Load 50% Load 50% Load No Load Input step 17 to 40VDC Input step 40 to 17VDC Input step 17 to 40VDC Input step 40 to 17VDC VIN = 17 to 40VDC IOUT = 0 to Full Load VIN = 17 to 40VDC Standard Package Flange Package 150 -300 +300 25 100 300 -500 +500 70 200 5 +300 1000 800 800 550 10 10 200 -400 +400 25 500 300 -500 +500 70 1500 5 +500 -1500 800 800 600 10 10 200 -400 +400 25 500 300 -500 +500 70 1500 5 +500 -1500 800 800 500 10 10 55 58 mVpk mVpk mVpk sec sec msec mVpk mVpk sec sec mVpk msec msec grams grams Step Line Changes Output TC = 25C Transient 2 Recovery TURN -ON Overshoot 3 Delay 4 Load Fault Recovery Weight +180 -600 400 400 0 8 8 55 58 +180 -600 400 400 300 8 8 55 58 +180 -600 400 400 300 8 8 Notes to Specifications 1. 2. 3. 4. 5. Above +125C case temperature, derate output power linearly to 0 at 135C case. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1% of VOUT at 50% load. See typical waveforms. Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin. For operation at 16VDC, derate output power by 33%. 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. 4 www.irf.com AHE28XXS Series AHE28XXS Block Diagram 5 + V ou t 1 + Inp u t 2 E n a ble 9 S ync In p ut R e tu rn 10 D rive 1 EMI F ilter 4 R e tu rn P u lse W id th M o du lato r FB D rive 2 E rror Amp & Ref 3 V ADJ Application Information Inhibit Function Connecting the inhibit input (Pin 2) to input common (Pin 10) will cause the converter to shut down. It is recommended that the inhibit pin be driven by an open collector device capable of sinking at least 400A of current. The open circuit voltage of the inhibit input is 11.5 1 VDC. Output Voltage Adjustment (AHE2805 only) The output voltage of the AHE2805S converter can be adjusted upward by connecting an appropriate resistor between Output Adjust (Pin 3) and Output Common (Pin 4) as shown in Table 1 below. Table 1 Output adjustment resistor values Resistance Pin 3 to 4 () None 390K 145K 63K 22K 0 Output Voltage Increases (%) 0 +1% +2% +3% +4% +5% EMI Filter An EMI filter (AFC461), available as an option, will reduce the input ripple current to levels below the limits imposed by MIL-STD-461B CEO. www.irf.com 5 AHE28XXS Series Device Synchronization Whenever multiple DC/DC converters are utilized in a single system, significant low frequency noise may be generated due to slight difference in the switching frequencies of the converters (beat frequency noise). Because of the low frequency nature of this noise (typically less than 10KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communications, radar or telemetry). Advanced Analog offers an option, which provides synchronization of multiple AHE/ATW/ATO type converters, thus eliminating this type of noise. To take advantage of this capability, the system designer must assign one of the converters as the master. Then, by definition, the remaining converters become slaves and will operate at the masters' switching frequency. The user should be aware that the synchronization system is fail-safe; that is, the slaves will continue operating should the master frequency be interrupted for any reason. The layout must be such that the synchronization output (pin 9) of the master device is connected to the synchronization input (pin 9) of each slave device. It is advisable to keep this run short to minimize the possibility of radiating the 250KHz switching frequency. The appropriate parts must be ordered to utilize this feature. After selecting the converters required for the system, a MSTR suffix is added for the master converter part number and a SLV suffix is added for slave part number. See Part Number section. Typical Synchronization Connection + In R e tu rn A FC 461 or A FV 461 O utput + In C a se O utput A H E 28xxS - M S TR R e tu rn M ST R R e tu rn R e tu rn + In C a se +O utpu t S ystem B us A H E 28xxD -S LV SL V R e tu rn -O utput R e tu rn + In C a se R e tu rn O utput A H E 28xxS -S LV R e tu rn SL V 6 www.irf.com AHE28XXS Series AHE28XXS Case Outlines Flanged 0.050 0.800 Non-Flanged 0.040 D X 0.26 L Pins 10 1 9 2 2.880 M ax 2.560 2.110 M ax 4 X 0.400 =1.600 2.110 8 3 7 4 6 5 0.495 1.110 0.495 M ax O 0.162 2 H oles Pin Designation Pin No. 1 2 3 4 5 6 7 8 9 10 Designation M ode l Part Numbering AHE 28 05 S F / CH - M STR S ync O ptio n M S TR = M a ster SL V = S la ve Positive Input Enable Input Output Adjust * Output Return Positive Output N/C N/C Case Ground N/C or Sync. Input Return Input V oltage 28 = 28V S cree nin g - O utput V oltage 5 = 5, 1 2 = 12, 15 = 15 , ES, H B, CH P ackag e O ption s O utputs S = S ing le D = D ual F = F la nge O m it fo r S tan dard * AHE2805S only. AHE2812S / 2815S have N/C on Pin 3 www.irf.com 7 AHE28XXS Series Available Screening Levels and Process Variations for AHE28XXS Series Requirement Temperature Range Element Evaluation Internal Visual Temperature Cycle Constant Acceleration Burn-in Final Electrical (Group A) Seal, Fine & Gross External Visual MIL-STD-883 Method No Suffix -20 to +85C ES Suffix -55C to +125C HB Suffix -55C to +125C CH Suffix -55C to +125C MIL-PRF-38534 2017 1010 2001 1015 MIL-PRF38534 & Specifications 1014 2009 48hrs @ 85C 25C Yes Cond B 500g 48hrs @ 125C 25C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C Cond C Cond A, C Yes Cond A, C Yes Cond A, C Yes * Per Commercial Standards Available Standard Military Drawing (SMD) Cross Reference Standard Military Drawing PIN 5962-8968301HXX 5962-8968301HZX 5962-8968302HXX 5962-8968302HZX 5962-8968303HXX 5962-8968303HZX Vendor CAGE Code 52467 52467 52467 52467 52467 52467 Vendor Similar PIN AHE2805S/CH AHE2805SF/CH AHE2805S/CH-SLV AHE2805SF/CHSLV AHE2805S/CH-MSTR AHE2805SF/CH-MSTR Standard Military Drawing PIN 5962-9158001HXX 5962-9158001HZX 5962-9158002HXX 5962-9158002HZX 5962-9158003HXX 5962-9158003HZX Vendor CAGE Code 52467 52467 52467 52467 52467 52467 Vendor Similar PIN AHE2812S/CH AHE2812SF/CH AHE2812S/CH-SLV AHE2812SF/CH-SLV AHE2812S/CH-MSTR AHE2812SF/CH-MSTR Standard Military Drawing PIN 5962-9162501HXX 5962-9162501HZX 5962-9162502HXX 5962-9162502HZX 5962-9162503HXX 5962-9162503HZX Vendor CAGE Code 52467 52467 52467 52467 52467 52467 Vendor Similar PIN AHE2815S/CH AHE2815SF/CH AHE2815S/CH-SLV AHE2815SF/CH-SLV AHE2815S/CH-MSTR AHE2815SF/CH-MSTR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 ADVANCED ANALOG: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 10/02 8 www.irf.com |
Price & Availability of AHE28XXS
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