参数资料
型号: IR51H420
厂商: International Rectifier
英文描述: SELF-OSCILLATING HALF-BRIDGE
中文描述: 自激式半桥
文件页数: 4/6页
文件大小: 184K
代理商: IR51H420
IR51H420
Functional Block Diagram
IR2151
VO
COM
V
B
V
CC
VIN
IRFC420
IRFC420
1
2
3
4
6
9
7
R
T
C
T
Lead Definitions
Lead
Description
Symbol
V
CC
Logic and internal gate drive supply voltage. An internal zener clamp diode at 15.6 V nominal is
included to allow the Vcc to be current fed directly from V
IN
typically by means of a high value
resistor.
Oscillator timing resistor input; a resistor is connected from R
T
to C
T
. R
T
is out of phase with
the half-bridge output (VO).
Oscillator timing capacitor output; a capacitor is connected from C
T
to COM in order to program
the oscillator frequency according to the following equation:
R
T
C
T
f
=
+
1
1 4
R
75
C
T
T
) ×
where 75
is the effective impedance of the R
T
output stage.
High side gate drive floating supply. For bootstrap operation a high voltage fast recovery diode is
needed to feed from V
CC
to V
B
.
High voltage supply.
Half-bridge output.
Logic and low side of half-bridge return.
V
B
V
IN
VO
COM
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