PD - 94583 AHV28XX SERIES 28V Input, Single, Dual and Triple Output ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS Description The AHV Series of DC/DC converters are designed to replace the AHE/ATO family of converters in applications requiring compliance to MIL-STD-704A through E, in particular the input surge requirement of 80 volts specified to withstand transient input voltage of 80 volts. No input voltage or output power derating is necessary over the full military temperature range. These converters are packaged in an extremely rugged, low profile package that meets all requirements of MIL-STD-883 and MIL-PRF-38534. Parallel seam weld sealing and the use of ceramic pin feedthru seals assure long term hermeticity after exposure to extended temperature cycling. The basic circuit is a push-pull forward topology using power MOSFET switches. The nominal switching frequency is 500KHz. A unique current injection circuit assures current balancing in the power switches. All AHV series converters use a single stage LC input filter to attenuate input ripple current. A low power 11.5volt series regulator provides power to an epitaxial CMOS custom pulse width modulator integrated circuit. This single integrated circuit provides all PWM primary circuit functions. Power is transferred from primary to secondary through a ferrite core power transformer. An error voltage signal is generated by comparing a highly stable reference voltage with the converter output voltage and drives the PWM through a unique wideband magnetic feedback circuit. This proprietary feedback circuit provides an extremely wide bandwidth, high gain control loop, with high phase margin. The feedback control loop gain is insensitive to temperature, radiation, aging, and variations in manufacturing. The transfer function of the feedback circuit is a function of the feedback transformer turns ratio which cannot change when subjected to environmental extremes. Manufactured in a facility fully qualified to MIL-PRF38534, these converters are available in four screening grades to satisfy a wide range of requirements. www.irf.com AHV Features n n n n n n n n n n n n n 80 Transient Input (100 msec max.) 50 VDC Input (Continous) 16 to 40 VDC Input Range Single, Dual and Triple Outputs 15 Watts Output Power (No Temperature Derating) Low Input / Output Noise Full Military Temperature Range Wideband PWM Control Loop Magnetic Feedback Low Profile Hermetic Package (0.405”) Short Circuit and Overload Protection Constant Switching Frequency (500KHz) True Hermetic Package (Parallel Seam Welded, Ceramic Pin Feedthru) The CH grade is fully compliant to the requirements of MIL-PRF-38534 for class H. The HB grade is processed and screened to the class H requirement, but may not necessarily meet all of the other MIL-PRF-38534 requirements, e.g., element evaluation and Periodic Inspection (P.I.) not required. Both grades are tested to meet the complete group “A” test specification over the full military temperature range without output power deration. Two grades with more limited screening are also available for use in less demanding applications. Variations in electrical, mechanical and screening can be accommodated. Contact Advanced Analog for special requirements. 1 11/20/02 AHV28XX Series Specifications (Single Output Models) TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC (continuous) 80V (100ms) Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds (1 pin at a time) Temperature Range Operating -55°C to +135°C Storage -65°C to +135°C TEST STATIC CHARACTERISTICS OUTPUT Voltage Current Ripple Voltage1 Power REGULATION Line Load SYMBOL VOUT IOUT VRIP POUT VRLINE VRLOAD INPUT Current IIN Ripple Current EFFICIENCY IRIP EFF ISOLATION ISO Capacitive Load 2,3 CL Load Fault Power Dissipation PD FS Condition -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified VIN = 16, 28, and 40 VDC IOUT = 0 VIN = 16, 28, and 40 VDC VIN = 16, 28, and 40 VDC BW = DC to 1 MHz VIN = 16, 28, and 40 VDC VIN = 16, 28, and 40 VDC IOUT = 0, half load and full load VIN = 16, 28, and 40 VDC IOUT = 0, half load and full load IOUT = 0, Inhibit (pin 2) = 0 IOUT = 0, Inhibit (pin 2) = Open IOUT = Full load IOUT = Full Load TC = +25°C Input to output or any pin to case (except pin 8) at 500 VDC TC = +25°C No effect on DC performance TC = +25°C Group A Subgroups AHV2805S Min Max 1 2,3 1,2,3 1,2,3 4.95 4.90 0.0 1,2,3 15 5.05 5.10 3.00 60 AHV2812S Min Max 11.88 11.76 0.0 12.12 12.24 1.25 60 15 AHV2815S Min Max 14.85 14.70 0.0 Units 15.15 15.30 1.00 60 V V A mVp-p 15 W 1 2,3 1,2,3 5 25 50 30 60 120 35 75 150 mV mV mV 1,2,3 18 50 50 18 50 50 18 50 50 1,2,3, 1 72 72 72 mA mA mAp-p % 1 100 100 100 MΩ 4 500 200 200 µF Overload, TC = +25°C4 Short Circuit, TC = +25°C 1 8.5 8.5 8,5 8.5 8.5 8.5 W W IOUT = Full Load 4 450 550 450 550 450 550 KHz 50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad 4 4 4 4 4 -300 -500 +300 +500 70 200 5 -300 -750 +300 +750 70 1500 5 -300 -750 +300 +750 70 1500 5 mVpk mVpk µs µs ms Input step 16 to 40 VDC 3,7 Input step 40 to 16 VDC 3,7 Input step 16 to 40 VDC 3,6,7 Input step 40 to 16 VDC 3,6,7 4 4 4 4 300 -1000 800 800 500 -1500 800 800 500 -1500 800 800 mVpk mVpk µs µs 4,5,6 4,5,6 4,5,6 550 10 10 750 10 10 750 10 10 mVpk ms ms Switching Frequency DYNAMIC CHARACTERISTICS Step Load Changes Output Transient5 5,6 Recovery Step Line Changes Output Transient Recovery TURN-ON Overshoot Delay Load Fault Recovery VOTLOAD TTLOAD VOTLINE TTLINE VTonos T on D TRLF IOUT = OA and Full Load IOUT = O and Full Load 8 VIN = 16 to 40 VDC Notes to Specifications (Single Output Models) 1. Bandwidth guaranteed by design. Tested for 20 KHz to 2 MHz. 2. Capacitive load may be any value from 0 to the maximum limit without affecting dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but will interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 3. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter shall be guaranteed to the limits specified. 4. An overload is that condition with a load in excess of the rated load but less than necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 5. Load step transition time between 2 to 10 microseconds. 6. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load. 7. Input step transition time between 2 and 10 microseconds. 8. Turn on delay time measurement is for either a step application of power at input or the removal of a ground signal from the inhinbit pin (pin 2) while power is applied to the input. Above 125°C case temperature, derate output power linearly to 0 at 135°C case. 2 www.irf.com AHV28XX Series Specifications (Dual Output Models) TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC (continuous) 80V (100ms) Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds (1 pin at a time) Temperature Range Operating -55°C to +135°C Storage -65°C to +135°C SYMBOL TEST STATIC CHARACTERISTICS OUTPUT 1 Voltage Condition -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified VOUT IOUT = 0 Current 1,3 Ripple Voltage IOUT VRIP 1,2,4 POUT VIN = 16, 28, and 40 VDC VIN = 16, 28, and 40 VDC BW = DC to 2 MHz VIN = 16, 28, and 40 VDC 1,2 Power REGULATION 1,5 Line Load VRLINE IOUT VRLOAD 1 INPUT Current IIN Ripple Current 3 IRIP EFFICIENCY EFF ISOLATION ISO Capacitive Load 6,7 CL Load Fault Power Dissipation Group A Subgroups AHV2812D AHV2815D Min Max Min Max Units 1 2,3 1,2,3 1,2,3 ±11.88 ±11.76 0.0 ±12.12 ±12.24 ±625 60 ±14.85 ±14.70 0.0 ±15.15 ±15.30 ±500 60 V V mA mVp-p 1,2,3 15 15 W VIN = 16, 28, and 40 VDC IOUT = 0, half load and full load VIN = 16, 28, and 40 VDC IOUT = 0, half load and full load 1 2,3 1,2,3 30 60 120 35 75 150 mV mV mV IOUT = 0, Inhibit (pin 2) Tied to input return (pin 10) IOUT = 0, Inhibit (pin 2) = Open IOUT = Full load BW = DC to 2MHz IOUT = Full Load TC = +25°C Input to output or any pin to case (except pin 8) at 500 VDC, TC = +25°C No effect on DC performance TC = +25°C 1,2,3 18 18 mA 1,2,3, 65 50 65 50 mA mAp-p 8 1 72 72 % 1 100 100 MΩ 4 200 200 µF 8,5 8.5 8.5 8.5 W W PD Overload, TC = +25°C Short Circuit, TC = +25°C 1 FS IOUT = Full Load 4 450 550 450 550 KHz 50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad 4 4 4 4 4 -300 -500 +300 +500 70 1500 5 -300 -500 +300 +500 70 1500 5 mVpk mVpk µS µS ms Input step 16 to 40 VDC Input step 40 to 16 VDC Input step 16 to 40 VDC Input step 40 to 16 VDC 4 4 4 4 1200 -1500 4 4 1500 -1500 4 4 mVpk mVpk µs µs 4,5,6 4,5,6 4,5,6 600 10 10 600 10 10 mVpk ms ms Switching Frequency DYNAMIC CHARACTERISTICS Step Load Changes 9 Output Transient Recovery VOTLOAD 9,10 TTLOAD Step Line Changes 7,11 Output Transient Recovery VOTLINE 7,10, 11 TURN-ON 1 Overshoot 1,12 Delay Load Fault Recovery TTLINE 7 VTonOS T on D TRLF IOUT = O and Full Load IOUT = O and Full Load For Notes to Specifications, refer to page 5 www.irf.com 3 AHV28XX Series Specifications (Triple Output Models) TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC (continuous) 80V (100ms) Power Output Internally limited, 17.5W typical Soldering 300°C for 10 seconds (1 pin at a time) Temperature Range Operating -55°C to +135°C Storage -65°C to +135°C TEST SYMBOL STATIC CHARACTERISTICS OUTPUT 1 Voltage VOUT Condition -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified IOUT = 0 (main) 1 IOUT = 0 (dual) Current 1,2,3 IOUT Ripple Voltage Power 1,4 VRIP 1,2,3 POUT REGULATION 1,3 Line Load VRLINE 1,3 VRLOAD INPUT Current Ripple Current IIN 4 IRIP EFFICIENCY EFF ISOLATION ISO Capacitive Load 6,7 CL Load Fault 3 Power Dissipation Switching Frequency VIN = 16, 28, and 40 VDC (main) 1 VIN = 16, 28, and 40 VDC (dual) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (main) VIN = 16, 28, and 40 VDC BW = DC to 2 MHz (main) VIN = 16, 28, and 40 VDC (main) (+dual) (-dual) (total) VIN = 16, 28, and 40 VDC IOUT = 0, 50%, and 100% load (main) IOUT = 0, 50%, and 100% load (dual) VIN = 16, 28, and 40 VDC IOUT = 0, 50%, and 100% load (main) IOUT = 0, 50%, and 100% load (dual) IOUT = 0, Inhibit (pin 8) Tied to input return (pin 10) IOUT = 0 Inhibit (pin 2) = open IOUT = 2000 mA (main) IOUT = ±208mA (±12V) IOUT = ±167mA (±15V) BW = DC to 2MHz IOUT = 2000mA (main) IOUT = ±208mA (±12V) IOUT = ±167mA (±15V) Input to output or any pin to case (except pin 7) at 500 VDC, TC = +25°C No effect on DC performance TC = +25°C (main) (dual) 5 Group A Subgroups 1 2,3 1 2,3 1,2,3 1,2,3 1,2,3 AHV2812T Max Min Max Units 4.95 4.90 ±11.88 ±11.76 0.0 0.0 5.05 5.10 ±12.12 ±12.24 2000 ±208 80 4.95 4.90 ±14.85 ±14.70 0.0 0.0 5.05 5.10 ±15.15 ±15.30 2000 ±167 80 V V V V mA mA mVp-p 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 AHV2815T Min 40 10 2.5 2.5 15 1,2,3 40 10 2.5 2.5 15 mVp-p W W W W 25 ±60 25 ±75 mV mV 50 ±60 50 ±75 mV mV 1,2,3 15 15 mA 1,2,3 50 50 mA 1,2,3 50 50 mAp-p 1 72 72 % 1 100 100 MΩ 4 500 200 500 200 µF µF 8.5 8.5 8.5 8.5 W W 550 KHz PD Overload, TC = +25°C Short Circuit, TC = +25°C 1 1 FS IOUT = 2000mA (main) IOUT = ±208mA (±12V) IOUT = ±167mA (±15V) 4 1 450 550 450 For Notes to Specifications, refer to page 5 4 www.irf.com AHV28XX Series Specifications (Triple Output Models) - continued Condition -55°C ≤ TC ≤ +125°C, TEST DYNAMIC CHARACTERISTICS Step Load Changes 9 Output Transient Recovery 9,10 Step Line Changes Output Transient Recovery 7,10, 11 TURN-ON 1 Overshoot 1,12 Delay 7 Load Fault Recovery SYMBOL VOTLOAD TTLOAD VOTLINE TTLINE VTonOS T on D TRLF VIN = 28 VDC ±5%, CL=0, unless otherwise specified Group A Subgroups AHV2812T AHV2815T Min Max Min Max Units -300 -400 +300 +400 100 2000 5 -300 -400 +300 +400 100 2000 5 mVpk mVpk µS µS ms 50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad 4 4 4 4 4 Input step 16 to 40 VDC Input step 40 to 16 VDC Input step 16 to 40 VDC Input step 40 to 16 VDC 4 4 4 4 1200 -1500 4 4 1200 -1500 4 4 mVpk mVpk µs µs IOUT = O and ±625mA IOUT = O and ±625mA 4 4 4 750 15 15 750 15 15 mVpk ms ms Notes to Specifications (Triple Output Models) 1. 2. 3. 4. 5. Tested at each output. Parameter guaranteed by line and load regulation tests. At least 25 percent of the total power should be taken from the (+5 volt) main output. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 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. Capacitive load may be any value from 0 to the maximum limit without affecting 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. 8. Above 125°C case temperature, derate output power linearly to 0 at 135°C case. 9. Load step transition time between 2 and 10 microseconds. 10. Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1 percent of VOUT at 50 percent load. 11. Input step transition time between 2 and 10 microseconds. 12. Turn on delay time measurement is for either a step application of power at input or the removal of a ground signal from the inhibit pin (pin 8) while power is applied to the input. Notes to Specifications (Dual Output Models) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Tested at each output. Parameter guaranteed by line and load regulation tests. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. Total power at both outputs. When operating with unbalanced loads, at least 25% of the load must be on the positive output to maintain regulation. Capacitive load may be any value from 0 to the maximum limit without affecting 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. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be guaranteed to the limits specified. 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. Load step transition time between 2 and 10 microseconds. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load. Input step transition time between 2 and 10 microseconds. Turn on delay time measurement is for either a step application of power at input or the removal of a ground signal from the inhibit pin (pin 2) while power is applied to the input. Above 125°C case temperature, derate output power linearly to 0 at 135°C. www.irf.com 5 AHV28XX Series AHV28XX (Single Output) Block Diagram 5 +Vout 1 + Inp u t EMI F ilte r 4 R e tu rn 8 D rive 1 Case P u lse W id th M o d ulator F B 2 E n a ble D rive 2 E rro r Amp & Ref 3 V ADJ In p u t R e tu rn 10 AHV28XX (Dual Output) Block Diagram 3 +Vout 1 + In p u t EMI F ilte r 4 R e tu rn R e g u la to r 2 E n a b le 5 -V o u t D rive 1 P u ls e W id th M o d u la to r F B 8 D rive 2 C a se Error Am p & R eferen ce In p u t R e tu rn 10 AHV28XX (Triple Output) Block Diagram 5 +V out R egulator 4 -V out 1 +Input 8 E nable 7 C ase EMI F ilter 2 +5V out 3 R eturn D riv e 1 P uls e W idth D riv e 2 M odulator FB E rro r A m p & R e fe re n ce Input R eturn 10 6 www.irf.com AHV28XX Series Application Information Inhibit Function EMI Filter Connecting the inhibit pin (Pin 2 of single and dual models, pin 8 of triple models) to the input return (pin 10) will cause the converter to shutdown and operate in a low power standby mode. Power consumption in this mode is calculated by multiplying Vin times the input current inhibited, typically 225mW at Vin equal to 28 volts. The input current inhibited is relatively constant with changes in Vin. The open circuit inhibit pin voltage is typically 11.5 volts and can be conveniently driven by an open collector driver. An internal pull-up resistor enables the user to leave this pin floating if the inhibit function is not used in their particular application. All models use identical inhibit internal circuits. Forcing inhibit pin to any voltage between 0 and 6 volts will assure the converter is inhibited. The input current to this pin is 500µA maximum at Vpin2 = to 0 volts. The converter can be turned on by opening Pin 2 or forcing a voltage from 10 to 50 volts. Inhibit pin current from 10 to 50 volts is less than ±50µA. An optional EMI filter ( AFC461) will reduce the input ripple current to levels below the limits imposed by MIL-STD461 CEO3. The output voltage of the AHV28XXS can be adjusted upward by connecting a resistor between the Output Adjust (Pin 3) and the Output Common (Pin 4) as shown in Table 1. Table 1: Output Adjustment Resistor Values * Resistance (Ohms) Pin 3 to 4 None 390 K 145 K 63 K 22 K 0 Output Voltage Increase (%) 5V 12V 15V 0 +1.0% +2.0% +3.1% +4.1% +5.0% 0 +1.6% +3.2% +4.9% +6.5% +7.9% 0 +1.7% +3.4% +5.1% +6.8% +8.3% * Output Adjust (Single Output Models Only) www.irf.com 7 AHV28XX Series AHV28XX Case Outlines Single and Dual Output Models 0.050 T ypical 0.800 10 9 8 7 5 Ø 0.162 2 H oles T ypical 0.405 Max 1.110 4 4 X 0.400 =1.600 3 2.110 Max 2 2.560 1 2.880 Max 6 0.040 D X 0.26 L Pins Triple Output Models 10 8 3 7 2 4 6 1 9 1.000 5 1.95 0.410 M ax 2.700 M ax 2.360 1.345 Pin Designation Part Numbering SIGNAL DESIGNATION PIN # SINGLE OUTPUT DUAL OUTPUT 1 Positive Input Positive Input Positive Input 2 Enable Input Enable Input +5VDC Output 3 Output Adjust* Positive Output Output Common 4 Output Common Output Common Neg. Dual Output (12/15 VDC) 5 Positive Output Negative Output Pos. Dual Output (12/15 VDC) 6 N/C N/C N/C 7 N/C N/C Case Ground 8 Case Ground Case Ground Enable Input 9 N/C N/C N/C Input Common Input Common Input Common 10 AHV 28 15 T F / CH TRIPLE OUTPUT Model Input Voltage 28 = 28V Nominal Output Voltage Single - 05, 12, 15V Dual - 12 = ±12V, 15 = ±15V Triple - 12 = 5V, ±12V 15 = 5V, ±15V Screening – , ES, HB, CH Package Style F = Flange Outputs S = Single D = Dual T = Triple * Output Adjust (Single Output Models Only) 8 www.irf.com AHV28XX Series Available Screening Levels and Process Variations for AHV28XX Series MIL-STD-883 Method Requirement Temperature Range No Suffix ES Suffix HB Suffix CH Suffix -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C ¬ Yes Yes Yes Element Evaluation MIL-PRF-38534 Internal Visual 2017 Temperature Cycle 1010 Cond B Cond C Cond C Constant Acceleration 2001 500g Cond A Cond A Burn-in Final Electrical (Group A) 1015 48hrs @ 85°C 48hrs @ 125°C 160hrs @ 125°C 160hrs @ 125°C MIL-PRF-38534 25°C 25°C -55, +25, +125°C -55, +25, +125°C & Specification Seal, Fine & Gross 1014 Cond A Cond A, C Cond A, C Cond A, C External Visual 2009 ¬ Yes Yes Yes * Per Commercial Standards Available Standard Military Drawing (SMD) Cross Reference Standardized Military Drawing Pin AHV2805SF/CH AHV2812SF/CH AHV2815SF/CH AHV2812DF/CH AHV2815DF/CH AHV2812TF/CH AHV2815TF/CH Vendor CAGE Code 52467 52467 52467 52467 52467 52467 52467 Vendor Similar Pin 5962-9177301 5962-9211201 5962-9211301 5962-9211401 5962-9177401 5962-9211501 5962-9211601 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. 11/02 www.irf.com 9