SSL4101T datasheet(2/29 Pages) NXP

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SSL4101T

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Product data sheet

Rev. 1 — 21 April 2011

2 of 29

NXP Semiconductors

SSL4101T

GreenChip III+ SMPS control IC

• Using SSL4101T, a low power controller (< 50 mW) can be driven directly by the LED

lighting application power supply’s output while maintaining the input power in

Standby mode below the maximum of 0.5 W.

• Extremely high-efficiency can be achieved in LED lighting application power supplies

using the SSL4101T (between 92 % to 94 %). This enables the power supply to

operate reliably in enclosed spaces with very little cooling (which is typical for SSL

applications).

Features and benefits

2.1 Distinctive features

Integrated PFC and flyback controller.

True universal mains supply operation: 70 V (AC) to 305 V (AC).

High level of integration, resulting in a very low external component count and a

cost-effective design.

2.2 Green features

On-chip start-up current source.

2.3 PFC green features

Valley/zero voltage switching for minimum switching losses (NXP Semiconductors

patented).

Frequency limitation to reduce switching losses.

PFC is switched off when a low load is detected at the flyback output.

2.4 Flyback green features

Valley switching for minimum switching losses (NXP Semiconductors patented).

Frequency reduction with fixed minimum peak current at low power operation to

maintain high efficiency at low output power levels.

2.5 Protection features

Safe restart mode for system fault conditions.

Continuous mode protection by means of demagnetization detection for both

converters (NXP Semiconductors patented).

UnderVoltage Protection (UVP) (foldback during overload).

Accurate OverVoltage Protection (OVP) for both converters (adjustable for flyback

converter).

Open control loop protection for both converters. The open loop protection on the

flyback converter is safe restart.

IC OverTemperature Protection (OTP).

Low and adjustable OverCurrent Protection (OCP) trip level for both converters.

General purpose input for latched protection, e.g. to be used for system

OverTemperature Protection (OTP).

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