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参数资料
| 型号： | PFS725EG |
| 厂商： | Power Integrations |
| 文件页数： | 4/30页 |
| 文件大小： | 0K |
| 描述： | IC PFC CTLR 480W 180V ESIP |
| 标准包装： | 48 |
| 系列： | HiperPFS™ |
| 模式： | 连续导电（CCM） |
| 频率 - 开关： | 24kHz ~ 95kHz |
| 电源电压： | 10 V ~ 12 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 7-SIP，6 引线，裸露焊盘，成形引线 |
| 供应商设备封装： | eSIP-7G |
| 包装： | 管件 |
| 其它名称： | 596-1388 |
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PFS704-729EG
Pin Functional Description
VOLTAGE MONITOR (V) Pin:
The V pin is tied to the rectified AC rail through an external
resistor. Internal circuitry detects the peak of the input line
voltage which resembles a full-wave rectified waveform. The
rectified high-voltage bus is connected directly to the V pin
voltage through a large resistor (4 M W for PFS70x and PFS71x;
9 M W for PFS72x) to minimize power dissipation and standby
power consumption. A small ceramic capacitor (0.1 m F for
PFS70x and PFS71x; 0.047 m F for PFS72x) is required from the
VOLTAGE MONITOR pin to SIGNAL GROUND pin to bypass
any switching noise present on the rectified bus. This pin also
features both brown-in and brown-out protection.
SIGNAL GROUND (G) Pin:
Discrete components used in the feedback circuit, including
loop compensation, decoupling capacitors for the supply (VCC)
and line-sense (V) must be referenced to the G pin. The
SIGNAL GROUND pin must not be tied to the SOURCE pin .
SOURCE (S) Pin:
This pin is the source connection of the power switch.
DRAIN (D) Pin:
This is the tab and drain connection of the internal power switch.
E Package (eSIP-7G)
FEEDBACK (FB) Pin:
The FEEDBACK pin is high input-impedance reference terminal
that connects to a feedback resistor network. This pin will also
feature fast overvoltage and undervoltage detection circuitry
that will disengage the internal power MOSFET in the event of a
Exposed Metal (On Edge)
Internally Connected
to GROUND Pin
Exposed Metal
(On Edge)
Internally
Connected to
DRAIN Pin
system fault. A 10 nF capacitor is required between the
FEEDBACK to SIGNAL GROUND pins; this capacitor must be
placed very close to the device on the PCB to bypass any
switching noise. This pin is also used for loop compensation.
BIAS POWER (VCC) Pin:
This is a 10-12 VDC bias supply used to power the IC. The bias
voltage must be externally clamped to prevent the VCC pin
1 23 4 5
7
7
54 3 2 1
Exposed Pad
(Backside)
Internally
Connected to
DRAIN Pin
(see eSIP-7G
Package
Drawing)
PI-5334-083110
from exceeding 15 VDC.
Figure 2.
Pin Configuration.
VOLTAGE MONITOR (V)
BIAS POWER (VCC)
DRAIN (D)
INPUT
LINE INTERFACE
Peak
Detector
INTERNAL
SUPPLY
+
-
V CC+
OTP
M ON I VPK
Input UV
(I UV- /I UV+ )
6 V
Input Voltage
Emulation
+
-
“Off-time derived with
constant Volt-Sec
V O -V IN
C INT
SOFT
START
7 kHz
Filter
(V OFF = 0.8 V for PFS723-729). I Frequency
Internal
Error-Amplifier
FEEDBACK (FB)
FB OV -
FB UV /
Comparator
Latch FB OV/UV
V OFF
V E
V OFF is a function of the error-voltage (V E ) and is used to reduce the average
operating frequency as a function of output power for increased efficiency
(PFS704-716).
VPK Slide
Transconductance V
E
Reference
V REF
+ 1 kHz
Filter
-
M ON is the switch current
sense scale factor which
is function of peak line
+ voltage derived from I VIN
Fast OV M ON I S
Comparator
FB OFF
+
Input UV
-
+
Comparator OTP
+
-
TIMER
SUPERVISOR
The internal derived error-voltage (V E )
regulates the output voltage
C INT
V CC
Driver
LEB
OCP
Sense
FET
I S
+
I OCP
-
Power
MOSFET
-
UV Comparator
SIGNAL GROUND (G)
SOURCE (S)
PI-5333-113010
Figure 3.
4
Rev. F 12/12
Functional Block Diagram.
www.powerint.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PFS726EG | 功能描述:功率因数校正 IC PFC w/ Pwr Mosfet 600 W MAX 180 VAC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| PFS727EG | 功能描述:功率因数校正 IC PFC w/ Pwr Mosfet 750 W MAX 180 VAC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| PFS728EG | 功能描述:功率因数校正 IC PFC w/ Pwr Mosfet 900 W MAX 180 VAC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| PFS729EG | 功能描述:功率因数校正 IC PFC w/ Pwr Mosfet 1000 W MAX 180 VAC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| PFS7323L | 功能描述:功率因数校正 IC HiPwr PFC Controller 120 W peak power RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
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