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参数资料
| 型号： | PFS758HG |
| 厂商： | POWER INTEGRATIONS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2.62 A SWITCHING CONTROLLER, 70 kHz SWITCHING FREQ-MAX, PZIP16 |
| 封装： | HALOGEN FREE AND ROHS COMPLIANT, PLASTIC, SIP-16 |
| 文件页数： | 14/36页 |
| 文件大小： | 4692K |
| 代理商： | PFS758HG |
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Rev. C 02/11
21
TFS757-764HG
www.powerint.com
Figure 27. Schematic of High-Efficiency +12 V, 25 A Main Output and +5 V, 2.5 A Standby Power Supply.
the Main converter. The Main converter will first turn on the
bottom switch to allow the high-side drive to receive the boot-
strap bias. After 14 ms the Main converter will start switching
both switches at 66 kHz and the main output voltage will rise.
Once the regulator U5 becomes active, current will flow through
the optocoupler U1. The collector of U1 will sink current out of
the FEEDBACK pin to adjust for appropriate duty cycle to
maintain regulation. The normal operating sink current is
between 1 mA and 2 mA. There is a forward phased bias
winding off the main transformer that provides sustained bias
for the high-side driver. During normal and brownout operation
the RESET pin senses the turn off clamp voltage via the resistor
chain R6, R18, R19 and the internal controller determines the
maximum safe duty factor by comparing the RESET pin current
with the LINE-SENSE pin current. This features guarantees that
saturation of the transformer is completely avoided in all conditions
including brownout and load transients. The LINE- SENSE pin
also has a UV low threshold which turns off the Main converter
when the input voltage is below 215 V.
This design in particular is intended to operate with a minimum
of 30 CFM airflow at full load.
Both the main and standby output have overvoltage protection
from sense circuit around U4 which will source >15 mA during
fault into bypass pin to cause latching shut-off of both converters.
The standby uses auto-restart to protect the standby output
from overpower and over-current. The main output is current
limited by the selected internal primary current limit of the main
switch path.
HD
14 - 25 V
D5
BAV20
VR4
MMSZ5243BT1G
13 V
D7
M6060C-E3/45
D6
M6060C-E3/45
D9
UF4005
C21
2.2 nF
L1
3.3
H
C4
100 nF
C5
47 nF
C10
3300
F
C11
3300
F
R21
2 k
R28
100
R30
1 k
R34
4.75 k
R31
4.75 k
U7
LM431
U5
LM431
R33
1 k
R32
4.7 k
SW1
Remote ON/OFF
U3A
PC817XI1J00F
R24
3.92 k
R3
100
R4
150
RTN
5 V
12 V
D2
U4A
PC817XI1JD0F
VR1
ZMM5242B-7
12 V
VR2
ZMM5230B-7
4.7 V
R15
750
U1A
PC817XI1J00F
R9
15 k
R10
221
C9
1 nF
D8
UF4005
C19
1 nF
C20
330 F
*Optional component for accidental reverse connection
R26
47
C17
2200 F
U2A
PC817XI1J00F
C14
470 nF
C16
330 nF
C15
2200 F
C13
100 nF
U2B
PC817XI1J00F
U1B
PC817XI1J00F
R25
232 k
R27
280 k
D10
BAS16HT1G
J3-1
J4-1
J3-3
R14
2 k
C6
100 nF
C3
100 nF
D3
1N4007
R5
4.7
R1
2.2
C1
270 F
F2
4 A
D13*
1N5404
R20
4.7 k
R16
7.5 k
R17
820
R35
1.33 M
R13
1.33 M
R12
1.33 M
R23
1 k
R22
4.7 k
U3B
PC817X1J00F
U4B
PC817X1J00F
R6
100
VR3
P6KE150A
R18
1.33 M
R19
1.33 M
R36
1.33 M
R8
4.7
U6
TFS762HG
D4
1N4007
D12
RGP100
D11
STPS1045B
3
5
2
1
2
6
9,10
13,14
1
HS
380 VDC
RTN
FB
EN
TSTANDBY
TMAIN
D
G
S
5
6
VDDH
13
R
L
FB
BP
EN
7
9
10
11
8
DSB
16
14
1
3
PI-5969-102810
C12
1 F
6,7
CONTROL
+12 V
+5 V
R29
470
L2
2.2
H
R7
4.7
C18
1 nF
C2
3.3 nF
C8
100 nF
R11
43.2 k
Q1
MMBT4401
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PFS759HG | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs |
| PFS760HG | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs |
| PFS761HG | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs |
| PFS7623H | 功能描述:IC PFC CONTROLLER ESIP-16D 制造商:power integrations 系列:HiperPFS?-4 包装:管件 零件状态:在售 模式:连续导电（CCM） 频率 - 开关:22kHz ~ 123kHz 电压 - 电源:10.2 V ~ 15 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-SIP，13引线，裸露焊盘，定形引线 供应商器件封装:eSIP-16D 标准包装:30 |
| PFS7623L | 功能描述:IC PFC CONTROLLER ESIP-16G 制造商:power integrations 系列:HiperPFS?-4 包装:管件 零件状态:在售 模式:连续导电（CCM） 频率 - 开关:22kHz ~ 123kHz 电压 - 电源:10.2 V ~ 15 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-SIP，13引线，裸露焊盘，定形引线 供应商器件封装:eSIP-16G 标准包装:30 |
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