The FSD200 is specially designed for an off-line SMPS with

minimal external components. The FSD200 is a monolithic

high voltage power switching regulator that combines an

LDMOS SenseFET with a voltage mode PWM control

block. The integrated PWM controller features: A fixed

oscillator with frequency modulation for reduced EMI.

Under voltage lock out. Leading edge blanking(LEB).

Optimized gate turn-on/turn-off driver. Thermal shut down

protection. Temperature compensated precision current

sources for loop compensation and fault protection circuitry.

Compared to a discrete MOSFET and controller or RCC

switching converter solution, an FSD200 can reduce total

component count, design size, weight and at the same time

increase efficiency, productivity, and system reliability. It is

a basic platform well suited for cost effective design of flyback converters.

Single Chip 700V SenseFET Power Switch

Precision Fixed Operating Frequency (134kHz)

Internal Start-up Switch and Soft Start

UVLO with Hysteresis (6V/7V)

Pulse by Pulse Current Limit

Over Load Protection

Internal Thermal Shutdown Function (Hysteresis)

Secondary Side Regulation

Auto-Restart Mode

Frequency Modulation for EMI

No Bias Winding

The FSD200 is specially designed for an off-line SMPS with minimal external components. The FSD200 is a monolithic high voltage power switching regulator that combines an LDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features: A fixed oscillator with frequency modulation for reduced EMI. Under voltage lock out. Leading edge blanking(LEB). Optimized gate turn-on/turn-off driver. Thermal shut down protection. Temperature compensated precision current sources for loop compensation and fault protectionThermal shut down circuitry. Compared to a discrete MOSFET and controller or RCC switching converter solution, an FSD200 can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It is a basic platform well suited for cost effective design of flyback converters.

Single Chip 700V SenseFET Power Switch 

Precision Fixed Operating Frequency (134kHz)

Internal Start-up Switch and Soft Start 

UVLO with Hysteresis (6V/7V)

Pulse by Pulse Current Limit 

Over Load Protection

Internal Thermal Shutdown Function (Hysteresis)

Secondary Side Regulation

Auto-Restart Mode

Frequency Modulation for EMI

No Bias Winding

FSD200

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