ISR2805DDRH データシートの表示（PDF） - M.S. Kennedy

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ISR2805DDRH

RADIATION HARDENED HIGH-POWER, HIGH EFFICIENCY DC-DC POWER CONVERTER

M.S. Kennedy 

ISO 9001 CERTIFIED BY DSCC

ISR2800D RADIATION HARDENED

HIGH-POWER, HIGH EFFICIENCY

M.S.KENNEDY CORP. DC-DC POWER CONVERTER

4704 Dey Road Liverpool, N.Y. 13088

(315) 701-6751

FEATURES:

82.5W Output Power

18-40VDC Steady-state Input Voltage Range

Adjustable Positive Output Voltage - 3.3V to 5.0V

Fixed -5V Negative Output

Typical 90% Efficiency from Half Load to Full Load

Total Dose - 100krad(Si)(max)

Single-Event Effects - LET>82MeV-cm²/mg

SEGR Hardened MOSFETs

Integrated Circuits are SEL Immune

Internal EMI Filter meets MIL-STD-461

Input Inrush Current Limiting

Remote Sense for Main Output Voltage

Soft-start Circuitry Prevents Output Voltage Overshoot

Input Undervoltage Lockout

Output Overload and Short Circuit Protection

Output Overvoltage Protection

Synchronization Capability

External Inhibit

DESCRIPTION:

The ISR2800D is the first in a series of radiation-hardened, high-reliability power supplies to be offered by MSK.

The ISR2800D is specifically optimized to drive transmit/receive (T/R) modules in Phased Array Antennas (PAA), but

as a result of its high-performance capabilities and numerous built-in features, it is ideal for many other applications.

The ISR2800D utilizes two DC-DC converters to optimize power conversion efficiency and facilitate voltage sequenc-

ing necessary to protect T/R modules during power-up and power-down. A small flyback converter, referenced to

input return and switching at 200kHz, is used to provide electrical input-output isolation, generate nominal +10VDC

bias voltages for the input and output control circuits of the power supply, and generate a nominal -5VDC negative

output voltage for the T/R modules. The negative output voltage for the T/R modules is cross-regulated via a tap on

the flyback transformer and referenced to output return. A low drop-out (LDO) linear regulator is then used to further

post-regulate this output voltage to ensure tight regulation and low ripple, typically less than 5mVp-p. A single

transistor forward converter, referenced to output return and switching at 100kHz, provides the positive adjustable

output voltage. They are enclosed in a hermetic Silicon Aluminum (SiAl) package and weigh less than TBD grams.

The package utilizes rugged ceramic feed-through Glid-Cop pins and is sealed using parallel seam welding.

TYPICAL APPLICATIONS

Geostationary (GEO) Earth Orbit Satellites

Low Earth Orbit (LEO) Satellites

Deep Space Satellites/Probes

Communication Systems

PIN-OUT INFORMATION

1 PRI INHIBIT

2 ETERM

3 INPUT

4 INPUT RTN

5 INPUT

6 INPUT RTN

7 INPUT

8 INPUT RTN

9 INPUT

10 INPUT RTN

11 SEC ON/OFF

12 SYNC OUT

13 SYNC IN

14 CROW BAR

15 -5V OUT

16 VOUT RTN

17 +VOUT

18 VOUT RTN

19 +VOUT

20 VOUT RTN

21 +VOUT

22 VOUT RTN

23 +VOUT

24 REM SENSE

25 VOUT ADJ

26 VOUT OVP ADJ

1

PRELIMINARY Rev. - 3/01

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