SSL4120 datasheet(1/48 Pages) NXP

Part #	SSL4120

Description	Resonant power supply controller IC with PFC for LED lighting

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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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), OverVoltage 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.

Combining PFC and HBC controllers in a single IC makes the SSL4120 ideal for

controlling compact power supplies in lighting applications, such as LED drivers.

Using the SSL4120, highly efficient and reliable power supplies providing over 100 W can

be designed easily which use the minimum of external components.

Remark: Unless otherwise stated, all values are typical.

SSL4120

Resonant power supply controller IC with PFC for LED

lighting

Rev. 2 — 1 November 2012

Product data sheet

Similar Part No. - SSL4120

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