NXP SSL2129AT

Description

The SSL2129AT is a high-voltage Integrated Circuit (IC) for driving LED lamps in general lighting applications.The main benefits of this IC include:•Small Printed-Circuit Board (PCB) footprint and compact solution•High efficiency (up to 95 %) for non-dimmable high power factor solutions•High power factor (>0.9)•Ease of integration and many protection features•Low electronic Bill Of Material (BOM)•Mains phase-cut dimmable using external components•Highly flexible IC for use in buck, buck/boost and flyback modes•Single inductor used for non-isolated configurations because of internal demagnetization detection and dV/dt supplyThe IC range has been designed to start up directly from the HV supply using an internal high-voltage current source. An internal clamp limits the supply voltage.

Features

• LED controller IC for driving strings of LEDs or high-voltage LED modules from a rectified mains supply
• Controller provides power-efficient boundary conduction mode of operation with:
• No reverse recovery losses in freewheel diode
• Zero-Current Switching (ZCS) for switch turn-on
• Zero-voltage or valley switching for switch turn-off
• Minimal required inductance value and size
• Fast transient response through cycle-by-cycle current control:
• No over or undershoots in the LED current
• Simple high input power factor solution (>0.9)
• Internal Protection features:
• UnderVoltage LockOut (UVLO)
• Leading-Edge Blanking (LEB)
• OverCurrent Protection (OCP)
• Internal OverTemperature Protection (OTP)
• Brownout protection
• Mains phase cut dimmable LED driver solution:
• Supports both leading and trailing-edge dimmers
• Easy external temperature protection with a single NTC
• Open output protection using external components
• Compatible with wall switches with built-in indication light during standby
• IC lifetime easily matches or surpasses LED lamp lifetime
• Input current distributed evenly over the phase, reducing required output capacitor size and bleeder dissipation

Typical applications

• LED LAMPS
• LED LAMPS

More information

• Datasheet
• IC product information