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IR51H320 fiches techniques PDF

International Rectifier - SELF-OSCILLATING HALF-BRIDGE

Numéro de référence IR51H320
Description SELF-OSCILLATING HALF-BRIDGE
Fabricant International Rectifier 
Logo International Rectifier 





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IR51H320 fiche technique
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Data Sheet No. PD-6.067B
IR51H320
SELF-OSCILLATING HALF-BRIDGE
Features
n Output Power MOSFETs in half-bridge configuration
400V Rated Breakdown Voltage
n High side gate drive designed for bootstrap operation
n Accurate timing control for both Power MOSFETs
Matched delay to get 50% duty cycle
Matched deadtime of 1.2us
n Internal oscillator with programmable frequency
f= 1
1. 4 × (RT + 75) × CT
n Zener clamped Vcc for offline operation
n Half-bridge output is out of phase with RT
Product Summary
VIN (max)
Duty Cycle
Deadtime
RDS(on)
PD (TA = 25 ºC)
400V
50%
1.2µs
1.8
2.0W
Description
The IR51H320 is a high voltage, high speed, self-
oscillating half-bridge. Proprietary HVIC and latch
immune CMOS technologies, along with the
HEXFET® power MOSFET technology, enable
ruggedized single package construction. The front-end
features a programmable oscillator which functions
similar to the CMOS 555 timer. The supply to the
control circuit has a zener clamp to simplify offline
operation. The output features two HEXFETs in a
half-bridge configuration with an internally set
deadtime designed for minimum cross-conduction in
the half-bridge. Propagation delays for the high and
low side power MOSFETs are matched to simplify use
in 50% duty cycle applications. The device can
operate up to 400 volts.
Typical Connection
UP TO 400V DC BUS
V IN
Package
IR51H320
9506
COM
IR 5 1 H 3 2 0
1
V
CC
V
B
6
RT
CT
2
R
T
9
V IN
3
C
T
7
VO
4
COM
TO LO AD
To Order

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