www.fairchildsemi.com
FSCM0565R
Features
Green Mode Fairchild Power Switch (FPS
TM
)
鈥?Internal Avalanche Rugged Sense FET
鈥?Low startup current (max 40uA)
鈥?Low power consumption under 1 W at 240VAC & 0.4W
load
鈥?Precise Fixed Operating Frequency (66kHz)
鈥?Frequency Modulation for low EMI
鈥?Pulse by Pulse Current Limiting (Adjustable)
鈥?Over Voltage Protection (OVP)
鈥?Over Load Protection (OLP)
鈥?Thermal Shutdown Function (TSD)
鈥?Auto-Restart Mode
鈥?Under Voltage Lock Out (UVLO) with hysteresis
鈥?Built-in Soft Start (15ms)
Table 1. Maximum Output Power
OUTPUT POWER TABLE
230VAC
鹵15%
(3)
PRODUCT
FSCM0565RD
FSCM0765RD
FSCM0565RC
FSCM0765RC
Adapt-
er
(1)
50W
65W
70W
85W
Open
Frame
(2)
65W
70W
85W
95W
85-265VAC
Adapt-
er
(1)
40W
50W
60W
70W
Open
Frame
(2)
50W
60W
70W
85W
Application
鈥?SMPS for VCR, SVR, STB, DVD & DVCD
鈥?Adaptor
鈥?SMPS for LCD Monitor
Notes:
1. Typical continuous power in a non-ventilated enclosed
adapter measured at 50擄C ambient.
2. Maximum practical continuous power in an open frame
design at 50擄C ambient.
3. 230 VAC or 100/115 VAC with doubler.
Description
The FSCM0565R is an integrated Pulse Width Modulator
(PWM) and Sense FET specifically designed for high
performance offline Switch Mode Power 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 includes
integrated fixed frequency oscillator, under voltage lockout,
leading edge blanking (LEB), optimized gate driver, internal
soft start, temperature compensated precise current sources
for a loop compensation and self protection circuitry.
Compared with discrete MOSFET and PWM controller
solution, it can reduce total cost, component count, size and
weight simultaneously increasing efficiency, productivity, and
system reliability. This device is a basic platform well suited
for cost effective designs of flyback converters.
Typical Circuit
DC
OUT
AC
IN
Drain
PWM
I
limit
Vfb
Vcc
GND
Figure 1. Typical Flyback Application
Rev.1.0.0
漏2005 Fairchild Semiconductor Corporation