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FSD200B -FSD210B-FSD210BM
SMPS Power Switch for Chargers
Features Single Chip 700V Sense FET Power Switch Precision Fixed Operating Frequency (134kHz) Advanced Burst-Mode operation Consumes under 0.1W
at 265Vac and no load (FSD210B only) Internal Start-up Switch and Soft Start Under V oltage Lock Out (UVLO) with Hysteresis Pulse by Pulse Current Limit Over Load Protection (OLP) Internal Thermal Shutdown Function (TSD) Auto-Restart Mode Frequency Modulation for EMI FSD200B does not require an auxiliary bias winding
Applications Charger & Adaptor for Mobile Phone, PDA & MP3 Auxiliary Power for White Goods, PC, C-TV & Monitor
Description The FSD200B and FSD210B are integrated Pulse Width
Modulators (PWM) and Sense FETs specially designed for
high performance off-line Switch Mode Power Supplies
(SMPS) with minimal external components. Both devices are
monolithic high voltage power switching regulators which
combine an LDMOS Sense FET with a voltage mode PWM
control block. The integrated PWM controller features in-
clude: a fixed oscillator with frequency modulation for re-
duced EMI, Under Voltage Lock Out (UVLO) protection,
Leading Edge Blanking (LEB), optimized gate turn-on/turn-
off driver, thermal shut down protection (TSD), temperature
compensated precision current sources for loop compensa-
tion and fault protection circuitry. When compared to a dis-
crete MOSFET and controller or RCC switching converter
solution, the FSD200B and FSD210B reduce total compo-
nent count, design size, weight and at the same time increase
efficiency, productivity, and system reliability. The FSD200B
eliminates the need for an auxiliary bias winding at a small
cost of increased supply power. Both devices are a basic plat-
form well suited for cost effective designs of flyback convert-
ers.
Table 1. Notes: 1. Typical continuous power in a non-ven-tilated enclosed adapter measured at 50°C ambient. 2.
Maximum practical continuous power in an open frame design at 50°C ambient. 3. 230 VAC or 100/115 VAC with
doubler.
Typical Circuit
Figure 1. Typical Flyback Application using FSD210B
Figure 2. Typical Flyback Application using FSD200B
