FSL306LR
FSL306LR is Green Mode Buck Switch manufactured by onsemi.
Description The FSL306LR integrate Pulse Width Modulator (PWM) and
SENSEFET® is specifically designed for high- performance offline buck, buck- boost, and non- isolation flyback Switched Mode Power Supplies (SMPS) with minimal external ponents. This device integrates a high- voltage power regulator that enables operation without auxiliary bias winding. An internal transconductance amplifier reduces external ponents for the feedback pensation circuit.
The integrated PWM controller includes: 10 V regulator for no external bias circuit, Under- Voltage Lockout (UVLO), Leading- Edge Blanking (LEB), an optimized gate turn- on / turn- off driver, EMI attenuator, Thermal Shutdown (TSD), temperature- pensated precision current sources for loop pensation, and fault- protection circuitry. Protections include: Overload Protection (OLP), Over- Voltage Protection (OVP), Feedback Open Loop Protection (FB_OLP), and Abnormal Over- Current Protection (AOCP). FSL306LR offers good soft- start performance during startup.
The internal high- voltage startup switch and the Burst- Mode operation with very low operating current reduce the power loss in Standby Mode. As the result, it is possible to reach power loss of 120 m W without external bias and 25 m W with external bias when input voltage is 230 VAC.
Features
- Built- in Avalanche Rugged SENSEFET: 650 V
- Fixed Operating Frequency: 50 k Hz
- No- Load Power Consumption:
<25 m W at 230 VAC with External Bias; <120 m W at 230 VAC without External Bias
- No Need for Auxiliary Bias Winding
- Frequency Modulation for Attenuating EMI
- Pulse- by- Pulse Current Limiting
- Ultra- Low Operating Current: 250 m A
- Built- in Soft- Start and Startup Circuit
- Adjustable Peak Current Limit
- Built- in Transconductance (Error) Amplifier
- Various Protections: Overload Protection (OLP), Over- Voltage
Protection (OVP), Feedback Open Loop Protection (FB_OLP), AOCP (Abnormal Over- Current Protection), Thermal Shutdown (TSD)
- Fixed 650 ms Restart Time for Safe Auto- Restart Mode of...
