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参数资料
| 型号： | FSDL321 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC SWIT PWM GREEN CM OVP HV 8DIP |
| 产品变化通告： | Passivation Layer Change 07/Dec/2007 |
| 标准包装： | 50 |
| 输出隔离： | 隔离 |
| 频率范围： | 45kHz ~ 55kHz |
| 输入电压： | 8 V ~ 20 V |
| 输出电压： | 650V |
| 功率（瓦特）： | 17W |
| 工作温度： | 25°C ~ 140°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 其它名称： | FSDL321_NL FSDL321_NL-ND |
FSDH321, FSDL321
Typical application circuit
1. PC Auxiliary Power Circuit (10W Output Power)
140~ 375
VDC
INPUT
R 102
100k ?
1W
C 101
10nF
630V
1
2
T1
EE 1625
10
7
D 201
SB 360
C 201
1000uF
16V
L 201
10uH
C 203
470uF
16V
5V
(+/-5 %)
2A
R 101
680k ?
1W
D 101
UF 4007
3
5
M Vcc
D 102
1N 4937
R 103
10 ?
4
Vcc
IC 101
FSDx321
3
Vstr
Vfb
Drain 6,7,8
2
D 103
1N 4937
C 102
47uF
50V R 104
10 ?
ZD1
19V
C104
22nF
GND
1
ZD2
19V
5
6
R 202
330 ?
PC 301
C 103
10uF
50V
H 11A 817A
C 301
2.2 nF
IC 201
KA431
R 201
1k ?
C 202
100nF
R 203
2k ?
R 204
2k ?
10W PC Auxiliary Power Circuit
10W PC Auxiliary Power, 150~375VDC Input Power
supply:
It shows an auxiliary power for PC. Efficiency at 10W, 150/
375VDC is ≥ 70%.
The PC application has the standard of standby power con-
sumption, under 1W at the output load 0.5W and input volt-
age 230VAC. For this the FSDH321 also has the burst
operating function like other green mode FPS’ such as
FSDM0265RN or FSDM0365RN and so on. This skill
reduces the MOSFET switching numbers and power MOS-
FET switching loss. This design takes advantage of self pro-
tection without external components and high switching
frequency, 100kHz. The frequency makes using a small size
transformer core possible. The EE16 or EE1625 can be used
for 10W application.
This is achieved by preventing the green FPS from switching
when the input voltage goes below a level needed to main-
tain output regulation, and keeping it off until the input volt-
age goes above the under-voltage threshold, when the AC is
turned on again. For example with the resistor, R101,
680k ?, the threshold voltage is around 150VAC(210VDC)
at the room temperature.
Surge voltages on the DRAIN pin due to the leakage induc-
14
tance is clamped by R102 and C101, keeping the DRAIN
voltage below 650 V under all conditions. The frequency
modulation feature of FSDH321 allows the circuit shown to
meet CISPR2AB with simple EMI filtering. The secondary
is rectified and smoothed by D201. Similarly D102 and
D103 are also rectifiers for main power control IC and
FSDH321 respectively. The 5V output voltage require two
capacitors in parallel to meet the ripple current requirement.
Switching noise filtering is provided by L201. The output is
regulated by the reference (TL431) voltage in secondary. It
is sensed via R203 and R204. Resistor R201 provides bias
for TL431 and R202 sets the overall DC gain. R202, C202
and R203 provide loop compensation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FSDL321L | 功能描述:电源开关 IC - 配电 FPS for DVDP/STB RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FSDL321L_Q | 功能描述:电源开关 IC - 配电 FPS for DVDP/STB RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FSDLC01G-S | 制造商:AXIOMTEK 制造商全称:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC128-S | 制造商:AXIOMTEK 制造商全称:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC16G-S | 制造商:AXIOMTEK 制造商全称:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
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