LM5025B - Texas Instruments

LM5025B PWM Controller

The LM5025B is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025B are as follows: • The maximum PWM duty cycle is limited to less than 75% to reduce voltage stress on the power MOSFETs. • The CS2 hiccup mode threshold is increased to 0.5V • The CS2 filter discharge device is disabled • The VCC regulator .

Features

1
•2 Internal Start-Up Bias Regulator
• 3A Compound Main Gate Driver
• Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
• Voltage Mode Control with Feed-Forward
• Adjustable Dual Mode Over-Current Protection
• Programmable Overlap or Deadtime between the Main and Active Clamp Outputs
• Volt x Second Maximum Duty Cycle Clamp
• Programmable Soft-Start
• Current Sense Leading Edge Blanking
• Single Resistor Programmable Oscillator
• Oscillator Up / Down Sync Capability
• Precision 5V Reference
• Thermal Shutdown PACKAGES
• TSSOP-16
• WSON-16 (5x5 mm) Thermally Enhanced D.