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SSL21081T/2T/3T/4T
GreenChip drivers for LED lighting
Rev. 3.1 — 22 February 2012
Product data sheet
1. General description
The SSL2108X is a range of high-voltage Integrated Circuits (ICs), intended to drive LED
lamps in general lighting applications.
The main benefits of the product family are:
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Small Printed-Circuit Board (PCB) footprint, and compact solution
High efficiency (up to 95 %)
Ease of integration
Low electronic Bill Of Material (BOM)
The product family is made of ICs with a range of internal HV switches for easy power
scaling.
The ICs work as boundary conduction mode converters, typically in buck configuration.
The IC range has been designed to start up directly from the HV supply by an internal
high-voltage current source. Thereafter, the dV/dt supply is used with capacitive coupling
from the drain, or any other auxiliary supply. This functionality provides full flexibility in the
application design. The IC consumes 1.3 mA of supply current with an internal clamp
limiting the supply voltage.
The ICs provide accurate output current control with LED current accuracy within 5 %.
The ICs can be operated using Pulse-Width Modulation (PWM) dimming and has many
protection features including easy LED temperature feedback.
2. Features and benefits
? LED driver IC family driving strings of LEDs from a rectified mains supply
? High-efficiency switch mode buck driver product family:
? Drivers with integrated 300 V (SSL21081 and SSL21082) or 600 V (SSL21083 and
SSL21084) power switches
? Controller with power-efficient boundary conduction mode of operation with:
? No reverse recovery losses in freewheel diode
? Zero Current Switching (ZCS) for turn-on of switch
? Zero voltage or valley switching for turn-on of switch
? Minimal required inductance value and size
? Direct PWM dimming possible
? Fast transient response through cycle-by-cycle current control:
? Negligible AC mains ripple at LED current and minimal total capacitor value
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SSL21082T 制造商:未知厂家 制造商全称:未知厂家 功能描述:The SSL2108X is a range of high-voltage Integrated Circuits (ICs), intended to drive LED lamps in general lighting applications.
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