HV9930中文资料Hysteretic Boost-Buck (CUK) LED Driver IC数据手册Microchip规格书

描述 Description

The HV9930 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) 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. The HV9930 based LED driver is ideal for LED lamps and RGB backlight applications with low voltage DC inputs. The HV9930 based LED Lamp drivers can achieve efficiency in excess of 80%.

特性 Features

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

简介

HV9930属于集成电路（IC）的LED驱动器。由制造生产的HV9930LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。