FS7M0880 Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Fairchild Power Switch(FPS TM)

FS7M0680, FS7M0880
Fairchild Power Switch (FPS^TM)
www.fairchildsemi.com
Features
• Pulse by Pulse Current Limit
• Over load protection (OLP) - Latch
• Over voltage protection (OVP) - Latch
• Internal Thermal Shutdown (TSD) - Latch
• Under Voltage Lock Out (UVLO) with hysteresis
• Internal High Voltage SenseFET (800V rated)
• User defined Soft Start
• Precision Fixed Operating Frequency (66kHz)
Application
• PC power supply
• PDP
Table 1. Maximum Output Power
PRODUCT
OUTPUT POWER TABLE
230VAC ±15%⁽²⁾
85-265VAC
Open Frame⁽¹⁾
Open Frame⁽¹⁾
FS7M0680
80W (Flyback)
150W (Forward)
180W (Forward) ⁽³⁾
65W (Flyback)
FS7M0880
110W (Flyback)
200W (Forward)
250W (Forward) ⁽³⁾
85W (Flyback)
Notes: 1. Maximum practical continuous power in an open
frame design at 50°C ambient. 2. 230 VAC or 100/115
VAC with doubler. 3. When the cooling fan is used.
Description
Typical Circuit
The Fairchild Power Switch FS7M-series is an integrated
Pulse Width Modulator (PWM) and Sense FET specifically
designed for high performance offline Switch Mode Power
Vo
Supplies (SMPS) with minimal external components. This
device is an integrated high voltage power switching
regulator which combine an avalanche rugged Sense FET
with a current mode PWM control block. The PWM controller AC IN
includes integrated fixed frequency oscillator, under voltage
lockout, leading edge blanking (LEB), optimized gate driver,
soft start, temperature compensated precise current sources
for a loop compensation and self protection circuitry.
Compared with discrete MOSFET and PWM controller
FS7M-series
S/S
PWM
Drain
GND
solution, it can reduce total cost, component count, size and
weight simultaneously increasing efficiency, productivity, and
V_FB
Vcc
system reliability. This device is a basic platform well suited
for cost effective designs of flyback and forward converters.
Figure 1. Typical Forward Application
©2005 Fairchild Semiconductor Corporation
Rev.1.0.2