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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 4/6頁(yè) |
| 文件大小： | 183K |
| 代理商： | IR51HD420 |
IR51HD420
Functional Block Diagram
IR2151
VO
COM
V
B
V
CC
V+
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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