参数资料
型号: FSL127HNY
厂商: Fairchild Semiconductor
文件页数: 1/15页
文件大小: 0K
描述: IC PWM/SEMSEFET SMPS 8-MDIP
标准包装: 59
系列: FPS™
输出隔离: 隔离
频率范围: 94kHz ~ 106kHz
输入电压: 9 V ~ 30 V
输出电压: 700V
功率(瓦特): 20W
工作温度: -40°C ~ 105°C
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-DIP
包装: 管件
September 2010
FSL127H
Green Mode Fairchild Power Switch (FPS?)
Features
Built-in 5ms Soft-Start Function
Internal Avalanche-Rugged 700V SenseFET
Low Audio Noise
High-Voltage Startup
Fixed PWM Frequency at 100KHz
Linearly Decreasing PWM Frequency to 18KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Open-Loop Protection (OLP)
V DD Under-Voltage Lockout (UVLO)
V DD Over-Voltage Protection (OVP)
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
SMPS for VCR, SVR, STB, DVD & VCD Player,
Printer, Facsimile, & Scanner
Adapter for Camcorder
Description
The highly integrated FSL127H consists of a current
mode Pulse Width Modulator (PWM) and an avalanche-
rugged 700V SenseFET. It is specifically designed for
high-performance offline Switch Mode Power Supplies
(SMPS) with minimal external components.
The integrated PWM controller features include a
proprietary green-mode function that provides off-time
modulation to linearly decrease the switching frequency
at light-load conditions to minimize standby power
consumption. To avoid acoustic noise problems, the
minimum PWM frequency is set above 18KHz. This
green-mode function enables the power supply to meet
international power conservation requirements. With the
internal high-voltage startup circuitry, the power loss
due to bleeding resistors is also eliminated. To further
reduce power consumption, the PWM controller is
manufactured using the BiCMOS process, which allows
an operating current of only 3.5mA.
The FSL127H built-in synchronized slope compensation
achieves stable peak-current-mode control. The
proprietary external line compensation ensures
constant output power limit over a wide AC input
voltage range, from 90V AC to 264V AC .
The FSL127H provides many protection functions. In
addition to cycle-by-cycle current limiting, the internal
open-loop protection circuit ensures safety when an
open-loop or output short-circuit failure occurs. PWM
output is disabled until V DD drops below the UVLO lower
limit, when the controller starts up again. As long as V DD
exceeds ~28V, the internal OVP circuit is triggered.
Compared to a discrete MOSFET and controller or RCC
switching converter solution, the FSL127H reduces total
component count, design size, and weight while
increasing efficiency, productivity, and system reliability.
These devices provide a basic platform well suited for
design of cost-effective flyback converters.
Ordering Information
Part Number
FSL127HNY
SenseFET
2.0A 700V
Operating
Temperature Range
-40°C to +105°C
Package
8-Pin Dual In-Line Package (MDIP),
JEDEC MS-001, .300" Wide
Packing Method
Tube
? 2010 Fairchild Semiconductor Corporation
FSL127H ? Rev. 1.0.2
www.fairchildsemi.com
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