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PD-94583A
AHV28XX SERIES HYBRID-HIGH RELIABILITY DC/DC CONVERTER 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 80V specified to withstand transient input voltage of 80V. 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 MILSTD-883 and MIL-PRF-38534. Parallel seam weld sealing and the use of ceramic pin feed thru 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 11.5V 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-PRF-38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Variations in electrical, mechanical and screening can be accommodated. Contact IR Santa Clara for special requirements.
28V Input, Single, Dual and Triple Output
AHV
Features
n n n n n n n n n n n n n n 80V Transient Input (100 msec max.) 50V DC Input (Continous) 16V to 40V DC Input Range Single, Dual and Triple Outputs 15W 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) Standard Microcircuit Drawings Available
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12/13/06
AHV28XX Series
TCASE = -55C to +125C, VIN = +28V 5% unless otherwise specified
Specifications (Single Output Models)
Absolute Maximum Ratings
Input voltage Power output Soldering temperature Operating case temperature Storage case temperature
Condition -55C TC +125C, VIN = 28 VDC 5%, CL=0, unless otherwise specified
-0.5V to +50VDC (Continous), 80V (100 msec) Internally limited, 17.5W typical 300C for 10 seconds (1 pin at a time) -55C to +125C -65C to +135C
TEST STATIC CHARACTERISTICS OUTPUT Voltage Current Ripple Voltage1 Power REGULATION Line Load INPUT Current Ripple Current EFFICIENCY ISOLATION
SYMBOL
Group A Subgroups
AHV2805S Min Max
AHV2812S Min Max
AHV2815S Min Max
Units
VOUT IOUT VRIP POUT VRLINE VRLOAD IIN IRIP EFF ISO
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 = +25C Input to output or any pin to case (except pin 8) at 500 VDC TC = +25C No effect on DC performance TC = +25C Overload, TC = +25C Short Circuit, TC = +25C IOUT = Full Load
4
1 2,3 1,2,3 1,2,3 1,2,3 1 2,3 1,2,3 1,2,3 1,2,3, 1 1
4.95 4.90 0.0 15
5.05 5.10 3.00 60
11.88 11.76 0.0 15
12.12 12.24 1.25 60
14.85 14.70 0.0 15
15.15 15.30 1.00 60
V V A mVp-p W
5.0 25 50 18 50 50 72 100 72 100
30 60 120 18 50 50 72 100
35 75 150 18 50 50
mV
mA mA mAp-p % M
Capacitive Load 2,3 Load Fault Power Dissipation Switching Frequency DYNAMIC CHARACTERISTICS Step Load Changes Output Transient5 Recovery
5,6
CL PD FS
4 1
500 8.5 8.5 450 550 450
200 8,5 8.5 550 450
200 8.5 8.5 550
F W
4
KHz
VOTLOAD TTLOAD
50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad 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 IOUT = OA and Full Load IOUT = O and Full Load 8 VIN = 16 to 40 VDC
4 4 4 4 4 4 4 4 4 4,5,6 4,5,6 4,5,6
-300 -500
+300 +500 70 200 5.0 300 -1000 800 800 550 10 10
-300 -750
+300 +750 70 1500 5.0 500 -1500 800 800 750 10 10
-300 -750
+300 +750 70 1500 5.0 500 -1500 800 800 750 10 10
mVpk mVpk s s ms mVpk mVpk s s mVpk ms ms
Step Line Changes Output Transient Recovery TURN-ON Overshoot Delay Load Fault Recovery
VOTLINE TTLINE VTonos T on D TRLF
Notes to Specifications (Single Output Models)
1. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz. 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 2s to 10s. 6. Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1% of VOUT at 50% load. 7. Input step transition time between 2s and 10s. 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 125C case temperature, derate output power linearly to 0 at 135C case.
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AHV28XX Series
Specifications (Dual Output Models)
TCASE = -55C to +125C, VIN = +28V 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage Power output Soldering temperature Operating case temperature Storage case temperature
Condition -55C TC +125C, VIN = 28 VDC 5%, CL=0, unless otherwise specified
-0.5V to +50VDC (Continous), 80V (100 msec) Internally limited, 17.5W typical 300C for 10 seconds (1 pin at a time) -55C to +125C -65C to +135C
TEST STATIC CHARACTERISTICS OUTPUT Voltage 1 Current 1,2 Ripple Voltage 1,3 Power 1,2,4 REGULATION Line 1,5 Load 1 INPUT Current Ripple Current 3 EFFICIENCY ISOLATION Capacitive Load
6,7
SYMBOL
Group A Subgroups
AHV2805D Min Max
AHV2812 Min Max
AHV281D Min Max Units
VOUT IOUT VRIP POUT VRLINE IOUT VRLOAD IIN IRIP EFF ISO CL PD FS
IOUT = 0 VIN = 16, 28, and 40 VDC VIN = 16, 28, and 40 VDC BW = DC to 2 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) Tied to input return (pin 10) IOUT = 0, Inhibit (pin 2) = Open IOUT = Full load BW = DC to 2MHz IOUT = Full Load TC = +25C Input to output or any pin to case (except pin 8) at 500 VDC, TC = +25C No effect on DC performance TC = +25C Overload, TC = +25C 8 Short Circuit, TC = +25C IOUT = Full Load
1 2,3 1,2,3 1,2,3 1,2,3 1 2,3 1,2,3 1,2,3 1,2,3, 1 1 4 1
4.95 4.90 0.0 15
5.05 5.10 1500 60
11.88 11.76 0.0 15
12.12 12.24 625 60
14.85 14.70 0.0 15
15.15 15.30 500 60
V V mA mVp-p W
30 60 120 18 65 50 72 100 200 8,5 8.5 450 550 450 72 100
30 60 120 18 65 50 72 100 200 8,5 8.5 550 450
35 75 150 18 65 50
mV
mA mA mAp-p % M
200 8.5 8.5 550
F W
Load Fault Power Dissipation Switching Frequency
4
KHz
DYNAMIC CHARACTERISTICS Step Load Changes Output Transient 9 Recovery 9,10
VOTLOAD TTLOAD
50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad Input step 16 to Input step 40 to Input step 16 to Input step 40 to 40 VDC 16 VDC 40 VDC 16 VDC
4 4 4 4 4 4 4 4 4 4,5,6 4,5,6 4,5,6
-300 -500
+300 +500 70 200 5.0 300 1000 4800 4800 550 10 10
-300 -500
+300 +500 70 1500 5.0 1200 -1500 4.0 4.0 600 10 10
-300 -500
+300 +500 70 1500 5.0 1500 -1500 4.0 4.0 600 10 10
mVpk mVpk s s ms mVpk mVpk s s mVpk ms ms
Step Line Changes Output Transient 7,11 Recovery 7,10, 11 TURN-ON Overshoot 1 Delay 1,12 Load Fault Recovery 7
VOT LINE TTLINE VTonOS T on D TRLF
IOUT = O and Full Load IOUT = O and Full Load
For Notes to Specifications, refer to page 5
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AHV28XX Series
Specifications (Triple Output Models)
TCASE = -55C to +125C, VIN = +28V 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage Power output Soldering temperature Operating case temperature Storage case temperature
Condition -55C TC +125C, V IN = 28 VDC 5%, CL=0, unless otherwise specified
-0.5V to +50VDC (Continous), 80V (100 msec) Internally limited, 17.5W typical 300C for 10 seconds (1 pin at a time) -55C to +125C -65C to +135C
TEST STATIC CHARACTERISTICS OUTPUT Voltage 1
SYMBOL
Group A Subgroups
AHV2812T Min Max
AHV2815T Min Max Units
VOUT
IOUT = 0 (main) IOUT = 0 (dual)
1
Current 1,2,3 Ripple Voltage
1,4
IOUT VRIP
Power 1,2,3
POUT
VIN = 16, 28, and 40 VDC (main) VIN = 16, 28, and 40 VDC (dual)1 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 = +25C No effect on DC performance TC = +25C (main) (dual) Overload, TC = +25C5 Short Circuit, TC = +25C IOUT = 2000mA (main) IOUT = 208mA (12V) IOUT = 167mA (15V)
1 2,3 1 2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3
4.95 4.90 11.88 11.76 0.0 0.0
5.05 5.10 12.12 12.24 2000 208 80 40
4.95 4.90 14.85 14.70 0.0 0.0
5.05 5.10 15.15 15.30 2000 167 80 40
V V V V mA mA mVp-p MVp-p W W W W
10 2.5 2.5 15 25 60 50 60
10 2.5 2.5 15 25 75 50 75 15 50 50
REGULATION Line 1,3 Load 1,3
VRLINE VRLOAD
mV
INPUT Current
IIN
1,2,3 1,2,3 1,2,3
15 50 50
mA mA mAp-p
Ripple Current 4
IRIP
EFFICIENCY
EFF
1
72
72
%
ISOLATION Capacitive Load 6,7 Load Fault Power Dissipation 3 Switching Frequency 1
ISO CL
1
100
100
M
4 1 1 4 450
500 200 8.5 8.5 550 450
500 200 8.5 8.5 550
F W
PD FS
KHz
For Notes to Specifications, refer to page 5
4
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AHV28XX Series
Specifications (Triple Output Models) - continued
Condition -55C TC +125C, VIN = 28 VDC 5%, CL=0, unless otherwise specified
Group A Subgroups AHV2812T Min Max AHV2815T Min Max Units
TEST DYNAMIC CHARACTERISTICS Step Load Changes 9 Output Transient Recovery
9,10
SYMBOL
VOTLOAD TTLOAD
50% Load 135 100% Load No Load 135 50% 50% Load 135 100% No Load 335 50% Load 50% Load 335 No lLoad Input step 16 to 40 VDC Input step 40 to 16 VDC Input step 16 to 40 VDC Input step 40 to 16 VDC IOUT = o and 625mA IOUT = o and 625mA
4 4 4 4 4 4 4 4 4 4 4 4
-300 -400
+300 +400 100 2000 5.0 1200 -1500 4.0 4.0 750 15 15
-300 -400
+300 +400 100 2000 5.0 1200 -1500 4.0 4.0 750 15 15
mVpk mVpk s s ms mVpk mVpk s s mVpk ms ms
Step Line Changes Output Transient Recovery
7,10, 11
VOTLINE TTLINE
TURN-ON Overshoot 1 1,12 Delay 7 Load Fault Recovery
VTonOS T on D TRLF
Notes to Specifications (Triple Output Models)
Tested at each output. Parameter guaranteed by line and load regulation tests. At least 25% of the total power should be taken from the (+5V) 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 125C case temperature, derate output power linearly to 0 at 135C case. 9. Load step transition time between 2s and 10s. 10. Recovery time is measured from the initiation of the transient to where V OUT has returned to within 1% of VOUT at 50% load. 11. Input step transition time between 2s and 10s. 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. 1. 2. 3. 4. 5.
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 2s and 10s. Recovery time is measured from the initiation of the transient to where V OUT has returned to within 1% of VOUT at 50% load. Input step transition time between 2s and 10s. 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 125C case temperature, derate output power linearly to 0 at 135C.
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AHV28XX Series Application Information
Inhibit Function
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 28V. The input current inhibited is relatively constant with changes in Vin. The open circuit inhibit pin voltage is typically 11.5V 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 0V and 6V will assure the converter is inhibited. The input current to this pin is 500A maximum at Vpin2 = to 0V. The converter can be turned on by opening Pin 2 or forcing a voltage from 10V to 50V. Inhibit pin current from 10V to 50V is less than 50A.
EMI Filter
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)
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit Drawing Number
5962-91773 5962-92112 5962-92113 5962-92114 5962-92115 5962-92116
Vendor Cage Code 52467 52467 52467 52467 52467 52467
IR Standard Part Number
AHV2805S AHV2812S AHV2815S AHV2812D AHV2812T AHV2815T
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AHV28XX Series
Figure 1. (Single Output) Block Diagram
5 +Vout 1 +Input 8 Case 2 Enable Input Input Return 10 EMI Filter 4 Output Return
Drive 1
Pulse Width Modulator FB
Drive 2
Error Amp & Ref
3 VADJ
Figure 2. (Dual Output) Block Diagram
3 +Vout 1 +Input 2 Enable Input 8 Case Input Return 10 EMI Filter
Regulator
4
Output Return
5 -Vout
Drive 1
Pulse Width Modulator FB
Drive 2
Error Amp & Reference
Figure 3. (Triple Output) Block Diagram
5 +Vout
Regulator
+Input 1 Enable Input 8 7 Case Input Return 10
EMI Filter
4 -Vout 2 +5 Vout 3 Output Return
Drive 1
Pulse Width Drive 2 Modulator
FB
Error Amp & Reference
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AHV28XX Series
Mechnical Outlines Single and Dual Output Model
0.050 Typical 0.040 D X 0.26 L Pins 0.800
10
1 2
2.880 Max
2.560
2.110 Max
4 X 0.400 =1.600
9
3
7
8
4 5
1.110
0.405 Max
O 0.162 2 Holes Typical
Triple Output Model
1.000
10
9
6
1 2
1.95 2.360 2.700 Max
8
3
7
4
6
5
0.410 Max 1.345
Pin Designation
Pin # 1 2 3 4 5 6 7 8 9 10 Single Output + Input Enable Input Output Adjust * Output Return + Output NC NC Case Ground NC Input Return Dual Output + Input Enable Input + Output Output Return - Output NC NC Case Ground NC Input Return Triple Output + Input + 5VDC Output Output Return - Dual Output (12/15VDC) + Dual Output (12/15VDC) NC Case Ground Enable Input NC Input Return
* Output Adjust (Single Output Models Only)
8
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AHV28XX 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 AHV 28 15 T F /CH
Model Input Voltage Nominal
28 = 28V
(Please refer to Screening Table)
Screening Level
No Suffix, ES, HB, CH
Package Style
F = Flange
Output Voltage
Single - 05 = 5V, 12 =12V, 15 =15V Dual - 05 = 5V,12 = 12V, 15 = 15V Triple - 12 = 5V, 12V 15 = 5V, 15V
Output
S = Single D = Dual T = Triple
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SANTA CLARA: 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.12/2006
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