CD5020A,LM5020A Current-Mode PWM Controller Chip

      The CD5020A high voltage pulse-width-modulation(PWM) controller contains all of the features neededto implement single ended primary power convertertopologies. CD5020A is based on current-modecontrol, and eases the design of loop compensation.The CD5020A includes a high-voltage start-upregulator that operates over a wide input voltagerange up to 120V. The PWM controller is designedfor high speed oscillator with frequency up to 1MHzand total propagation delays less than 100ns.Additional features include an error amplifier,precision reference, line under-voltage lockout,cycle-by-cycle current limit, slope compensation,soft-start, oscillator synchronization capability andthermal shutdown.

Internal Start-up Bias Regulator

Error Amplifier

Precision Voltage Reference

Programmable Soft-Start

1A Peak Gate Drive

Maximum Duty Cycle Limiting - 80% Programmable Line Under Voltage Lockout

(UVLO) with Adjustable Hysteresis Cycle-by-Cycle Over-Current Protection Slope Compensation

Programmable Oscillator Frequency with Synchronization Capability

Current Sense Leading Edge Blanking

Thermal Shutdown Protection

Packages: VSSOP10, WSON10

VIN to GND:      -0.3V to 120V

VCC to GND:      -0.3V to 16V

RT to GND:      -0.3V to 5.5V

All other pins to GND:      -0.3V to 7V

Junction Temperature:      150℃

Storage Temperature:     -65℃ to 150℃

VIN Voltage :     13V to 100V

VCC Voltage :      8V to 15V

Operating Junction Temperature (TJ):      -40℃ to 125℃