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參數(shù)資料
| 型號： | IR51HD420 |
| 廠商： | International Rectifier |
| 英文描述： | SELF-OSCILLATING HALF-BRIDGE |
| 中文描述： | 自激式半橋 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 183K |
| 代理商： | IR51HD420 |
Data Sheet No. PD-6.057D
IR51HD420
SELF-OSCILLATING HALF-BRIDGE
Product Summary
Features
n
Output Power MOSFETs in half-bridge configuration
500V Rated Breakdown Voltage
n
High side gate drive designed for bootstrap operation
n
Bootstrap diode integrated into package
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
1
1 4
R
75
T
) ×
n
Zener clamped Vcc for offline operation
n
Half-bridge output is out of phase with R
T
f
=
+
C
T
Description
The IR51HD420 is a high voltage, high speed, self-
oscillating half-bridge. Proprietary HVIC and latch
immune
CMOS
technologies,
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 500 volts.
along
with
the
V
IN
(max)
500V
Duty Cycle
50%
Deadtime
1.2μs
R
DS(on)
3.0
P
D
(T
A
= 25 oC)
2.0W
Package
IR51HD420
9506
Typical Connection
T O L O A D
I R 5 1 H D 4 2 0
C O M
C C
V
VI N
B
V
C T
R T
U P T O 5 0 0 V D C B U S
V O
C O M
VI N
T
R
T
C
1
2
3
4
6
9
7
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