FSDM101 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPSTM)

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FSDM101
Green Mode Fairchild Power Switch (FPS^TM)
Features
• Internal Avalanche Rugged Sense FET
• Precision Fixed Operating Frequency (67kHz)
• Internal Start-up Switch and Soft Start
• Under Voltage Lock Out (UVLO) with Hysteresis
• Pulse by Pulse Current Limit
• Over Load Protection (OLP)
• Over Voltage Protection (OVP)
• Internal Thermal Shutdown Function (TSD)
• Secondary Side Regulation
• Auto-Restart Mode
TYPICAL OUTPUT POWER CAPABILITY
PRODUCT
Open Frame⁽¹⁾
230VAC ±15%⁽²⁾
85-265VAC
FSDM101
13W
8W
PEAK OUTPUT POWER CAPABILITY⁽³⁾
PRODUCT
Open Frame⁽¹⁾
230VAC ±15%⁽²⁾
85-265VAC
FSDM101
17W
12W
Applications
• Charger & Adaptor for Mobile Phone, PDA & MP3
• Auxiliary Power for White Goods, PC, C-TV & Monitor
• SMPS for VCR, SVR, STB, DVD, and DVCD
• Adaptor for Camcorder
Description
The FSDM101 is an integrated Pulse Width Modulator
(PWM) and Sense FET specially designed for high perfor-
mance off-line Switch Mode Power Supplies (SMPS) with
minimal external components. This device is a monolithic
high voltage power switching regulator which combines a
VDMOS Sense FET with a voltage mode PWM control
block. The integrated PWM controller features include: a
fixed oscillator, Under Voltage Lock Out (UVLO) protec-
tion, Leading Edge Blanking (LEB), optimized gate turn-on/
turn-off driver, thermal shut down protection (TSD), temper-
ature compensated precision current sources for loop com-
pensation and fault protection circuitry. When compared to a
discrete MOSFET and controller or RCC switching con-
verter solution, the FSDM101 reduces total component
count, design size, weight and at the same time increases
efficiency, productivity, and system reliability. This device is
a basic platform well suited for cost effective designs of fly-
back converters.
Table 1. Notes: 1. Maximum practical continuous power
in an open frame design with a sufficient drain pattern as
a heat sinker at 50°C ambient temperature. 2. 230 VAC or
100/115 VAC with doubler. 3. Peak output power means
the maximum power can be handled instantaneously.
Typical Circuit
AC
IN
Vstr Drain
PWM
Vfb
Vcc
Source
DC
OUT
Figure 1. Typical Flyback Application Using FSDM101
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
Rev.1.0.1