SSL4120
Resonant power supply controller IC with PFC for LED lighting
Rev. 2.1 — 18 February 2014
Product data sheet
...
SSL4120
Resonant power supply controller IC with PFC for LED lighting
Rev. 2.1 — 18 February 2014
Product data sheet
1. General description
The SSL4120 integrates a Power Factor Corrector (PFC) controller and a controller for a Half-Bridge resonant Converter (HBC) in a multi-chip IC. It provides the drive function for the discrete
MOSFET in an up-converter and for the two discrete power
MOSFETs in a resonant half-bridge configuration.
Efficient PFC operation is achieved by implementing functions for Quasi-Resonant (QR) operation at high-power levels and QR with valley skipping at lower power levels. OverCurrent Protection (OCP), Over
Voltage Protection (OVP) and demagnetization sensing ensure safe operation under all conditions
The HBC module is a high-
voltage controller for a zero-
voltage switching LLC resonant converter. It contains a high-
voltage level shift circuit and several protection circuits including OCP, open-loop protection, capacitive mode protection and a general purpose latched protection input.
The high-
voltage chip is fabricated using a proprietary high-
voltage Bipolar-
CMOS-DMOS power logic process enabling efficient direct start-up from the rectified universal mains
voltage. The low-
voltage Silicon-On-Insulator (SOI) chip is used for accurate, high-speed protection functions and control.
The SSL4120 controlled PFC circuit and resonant converter topology is very flexible. It can be used for a broad range of applications over a wide mains
voltage range. Com...