HV9910NG-G 데이터 시트보기 (PDF) - Supertex Inc
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HV9910NG-G Datasheet PDF : 8 Pages
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HV9910
Figure 1: Typical Application Circuit
2A
250V
Coilcraft
1N4004 1N4004
BUSH-2820R5b
AC Input
85 - 135VAC
0.1µF
250V
0.1µF
250V
2R
NTC
1.0nF
250V
1N4004
0.1µF 1N4004
250V
68µF
160V
1N4004
1N4004
1.0μF
10V
1N4004
68µF
160V
Optional for PFC
LED(s) - a string of HB LEDs, 16 diodes
VIN
RT
VDD
HV9910
GATE
LD
CS
PWM_D
GND
BYV26B
280 kΩ
750μH
VN2224
LEDs
220nF
400V
0.2Ω
Figure 2: HV9910 Buck driver for a simple 900mA HB LED (VIN = 8 - 30V)
VIN +1
VIN = 8-30V
C7
10µF,
35V
C6
10µF,
35V
VIN -1
C5
2.2µF,
10V
U2 1
R11
6
VDD
8 267KΩ
RT
7
HV9910
4
LD
Gat e
5
PWMD
2
CS
3
PWMD1
D2
B140-13
1 L2 2
220µH
Q2
VN3205
R10
0.27Ω
HB LED
900mA at 4.5V
7
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