HV9930LG-G

The HV9930 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Cuk) topology. The HV9930 uses a patent-pending hysteretic current-mode control to regulate both the input and output currents. This enables superior input surge immunity without the necessity for complex loop compensation. Input current control enables current limiting during startup, input under-voltage and output overload conditions. The HV9930 provides a low-frequency PWM dimming input that can accept an external control signal with a duty cycle of 0 - 100% and a high dimming ratio.

• Constant output current LED driver
• Steps output voltage up or down
• Low EMI
• Variable frequency operation
• Internal 8.0 - 200V linear regulator
• Input and output current sensing
• Input current limit
• Enable & PWM dimming