FSQ 系列 20 V 表面贴装 反激式 PWM 控制器 - DIP-8
The consists of an integrated Pulse Width Modulator PWM and SenseFET, specifically designed for high-performance, off-line Switch Mode Power Supplies SMPS with minimal external components. This device is an integrated high-voltage power switching regulator that combines a VDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features include a fixed oscillator, Under Voltage Lockout UVLO protection, Leading Edge Blanking LEB, an optimized gate turn-on/turn-off driver, Thermal Shutdown TSD protection, and temperature compensated precision-current sources for loop compensation and fault protection circuitry. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ211 device reduces total component count and design size and weight, while increasing efficiency, productivity, and system reliability. This device provides a basic platform well suited for cost-effective flyback converters.
Features
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- Internal Avalanche-Rugged SenseFET
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- Precision Fixed Operating Frequency 67KHz
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- Burst-Mode Operation
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- Internal Start-up Circuit
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- Pulse-by-Pulse Current Limiting
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- Overload Protection OLP
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- Internal Thermal Shutdown Function TSD
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- Auto-Restart Mode
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- Under-Voltage Lockout UVLO with Hysteresis
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- Built-in Soft Start 15ms
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- Secondary-Side Regulation