PD - 94550
ATR28XXD SERIES ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS
Description
The ATR28XXD 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 ±12V and ±15V dual outputs to satisfy a wide range of requirements. The circuit design incorporates a pulse width modulated single forward topology operating in the feed-forward mode 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 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. Four 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. The ES version is a full temperature device without the full class H or element evaluation. The non-suffix device is a low cost
28V Input, Dual Output
ATR Features
n 16 to 40 VDC Input Range (28 VDC Nominal) n ±12V and ±15V Outputs Available n Indefinite Short Circuit and Overload Protection 3 n 35 W/in Power Density n 30 Watt Output Power n Fast Loop Response for Superior Transient Characteristics n Operating Temperature Range from -55°C to +125°C n Popular Industry Standard Pin-Out n Resistance Seam Welded Case for Superior Long Term Hermeticity n Ceramic Feed-thru Pins n External Synchronization n High Efficiency n Shutdown from External Signal n Military Screening
limited temperature range option. Variations in electrical, mechanical and screening can be accommodated. Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact Advanced Analog with specific requirements.
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1
10/29/02
ATR28XXD Series Specifications
TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC Power Output Internally limited, 36W typical Soldering 300°C for 10 seconds Recommended Operating -55°C to +85°C Temperature Range1 Maximum Operating -55°C to +115°C Storage -65°C to +135°C
Condition -55°C ≤ TC ≤ +85°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified
ATR2812D Min Typ Max Min
ATR2815D Typ Max Units
PARAMETER STATIC CHARACTERISTICS OUTPUT Voltage 5 Current Ripple Accuracy 1 Power REGULATION Line Load 6 CROSS REGULATION INPUT Voltage Range Current Ripple Current EFFICIENCY ISOLATION CAPACITIVE LOAD Load Fault Power Dissipation Switching Frequency 7 SYNC Frequency Range DYNAMIC CHARACTERISTICS Step Load Changes Output Transient Recovery
2
VIN = 16 to 40 VDC IOUT = 0 to Full Load Full Load, 20KHz to 2MHz TCASE = 25°C, Full Load
±11.76 0.0 ±11.88 30
±12.00 40 ±12.00
±12.24 ±1.25 85 ±12.12
±14.70 0.0 ±14.85 30
±15.00 40 ±15.00
±15.30 ±1.0 85 ±15.15
VDC ADC mV p-p VDC W mV mV % VDC mADC mADC mA p-p % MΩ µF W W KHz KHz
VIN = 16 to 40 VDC IOUT = 0 to Full Load VIN = 16, 28, and 40 VDC 16.0 No Load, pin 2 = open Inhibited, pin 2 tied to pin 10 Full Load Full Load TC = +25°C Input to output @500 VDC No effect on performance TC = +25°C (total for both outputs) Short Circuit Overload, TC = +25°C IOUT = Full Load 28.0
75 120 ±5 40.0 75 18 50 16.0 28.0
75 150 ±5 40.0 75 18 50
25 82 100
25 82 100
100 9 14 600 700 ±100 ±250 25 500 3 ±180 -600 5 5 0 14 14 600 25 25
100 9 14 600 700 ±100 ±250 25 500 3 ±180 -600 5 5 0 14 14 600 25 25
500 500
500 500
50% Load to 100% Load No Load to 50% Load 50% Load to 100% Load No Load to 50% Load 50% Load to No Load Input step 16 to 40 VDC Input step 40 to 16 VDC Input step 16 to 40 VDC Input step 40 to 16 VDC VIN = 16 to 40 VDC IOUT = O and Full Load VIN = 16 to 40 VDC
mVpk mVpk µs µs ms mVpk mVpk ms ms mVpk ms ms
Step Line Changes Output Transient 2 Recovery TURN-ON Overshoot 3 Delay Load Fault Recovery
Notes to Specifications
1. 2. 3. 4. 5. 6. 7. Above +85°C case temperature, derate output power linearly to 0 at +115°C case. Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of VOUT at 50% load. Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin. Load current split equally between +VOUT and –VOUT. Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts. 3W load on output under test, 3W to 27W on other output. Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle, 0.8V Max 11.5V Max
2
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ATR28XXD Series Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC Power Output Internally limited, 36W typical Soldering 300°C for 10 seconds Temperature Range1 Recommended Operating Maximum Operating Storage
Condition -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified
-55°C to +125°C -55°C to +135°C -65°C to +135°C
ATR2812D/ES Min Typ Max Min
ATR2815D/ES Typ Max Units
PARAMETER STATIC CHARACTERISTICS OUTPUT Voltage 5 Current Ripple Accuracy 1 Power REGULATION Line Load 6 CROSS REGULATION INPUT Voltage Range Current Ripple Current EFFICIENCY ISOLATION CAPACITIVE LOAD
VIN = 16 to 40 VDC IOUT = 0 to Full Load Full Load, 20KHz to 2MHz TCASE = 25°C, Full Load VIN = 16 to 40 VDC IOUT = 0 to Full Load VIN = 16, 28, and 40 VDC
±11.76 0.0 ±11.88 30
±12.00 40 ±12.00
±12.24 ±1.25 85 ±12.12
±14.70 0.0 ±14.85 30
±15.00 40 ±15.00
±15.30 ±1.0 85 ±15.15
VDC ADC mV p-p VDC W mV mV % VDC mADC mADC mA p-p % MΩ µF
75 120 ±5 16.0 28.0 40.0 75 18 50 16.0 28.0
75 150 ±5 40.0 75 18 50
Load Fault Power Dissipation Switching Frequency 7 SYNC Frequency Range DYNAMIC CHARACTERISTICS Step Load Changes Output Transient Recovery
2
No Load, pin 2 = open Inhibited, pin 2 tied to pin 10 Full Load Full Load TC = +25°C Input to output @500 VDC No effect on performance TC = +25°C (total for both outputs) Short Circuit Overload, TC = +25°C IOUT = Full Load
80 100
25 82
79 100 100
25 82
100
500 500 ±100 ±250 25 500 3 ±180 -600 5 5 0 14 14
9 14 600 700
500 500 ±100 ±250 25 500 3 ±180 -600 5 5
9 14 600 700
W W KHz KHz
50% Load to 100% Load No Load to 50% Load 50% Load to 100% Load No Load to 50% Load 50% Load to No Load Input step 16 to 40 VDC Input step 40 to 16 VDC Input step 16 to 40 VDC Input step 40 to 16 VDC VIN = 16 to 40 VDC IOUT = O to Full Load VIN = 16 to 40 VDC
mVpk mVpk µs µs ms mVpk mVpk ms ms 600 25 25 mVpk ms ms
Step Line Changes Output Transient 2 Recovery TURN-ON Overshoot 3 Delay Load Fault Recovery
600 25 25
0 14 14
Notes to Specifications
1. 2. 3. 4. 5. 6. 7. Above +125°C case temperature, derate output power linearly to 0 at +135°C case. Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of VOUT at 50% load. Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin. Load current split equally between +VOUT and –VOUT. Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts. 3W load on output under test, 3W to 27W on other output. Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle 0.8V Max, 11.5V Max
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3
ATR28XXD Series Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS Input Voltage -0.5V to 50VDC Power Output Internally limited, 36W typical Soldering 300°C for 10 seconds Temperature Range1 Recommended Operating Maximum Operating Storage
-55°C to +125°C -55°C to +135°C -65°C to +135°C
PARAMETER STATIC CHARACTERISTICS OUTPUT Voltage 5 Current Ripple Accuracy 1 Power REGULATION 4 Line 4 Load 6 CROSS REGULATION INPUT Voltage Range Current Ripple Current EFFICIENCY ISOLATION CAPACITIVE LOAD Load Fault Power Dissipation Switching Frequency 7 SYNC Frequency Range DYNAMIC CHARACTERISTICS Step Load Changes 4 Output Transient Recovery
2
Condition -55°C ≤ TC ≤ +125°C, VIN = 28 VDC ±5%, CL=0, unless otherwise specified
ATR2812D/HB Min Typ Max Min
ATR2815D/HB Typ Max Units
VIN = 16 to 40 VDC IOUT = 0 to Full Load Full Load, 20KHz to 2MHz TCASE = 25°C, Full Load VIN = 16 to 40 VDC IOUT = 0 to Full Load VIN = 16, 28, and 40 VDC
±11.76 0.0 ±11.88 30
±12.00 40 ±12.00
±12.24 ±1.25 85 ±12.12
±14.70 0.0 ±14.85 30
±15.00 40 ±15.00
±15.30 ±1.0 85 ±15.15
VDC ADC mV p-p VDC W mV mV % VDC mADC mADC mA p-p % MΩ µF W W KHz KHz
75 120 ±5 16.0 28.0 40.0 75 18 50 16.0 28.0 18 25 82
75 150 ±5 40.0 75 18 50
No Load, pin 2 = open Inhibited, pin 2 tied to pin 10 Full Load Full Load TC = +25°C Input to output @500 VDC No effect on performance TC = +25°C (total for both outputs) Short Circuit Overload, TC = +25°C IOUT = Full Load
80 100
25 82
79 100 100 9 14 600 700
100 9 14 600 700 ±100 ±250 25 500 3 ±180 -600 5 5 0 14 14 ±450 ±750 70 1500 5 1500 -1500 10
