CRD1616-8W-Z 查看數據表（PDF） - Cirrus Logic

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CRD1616-8W-Z

8 Watt Reference Design

Cirrus Logic 

CRD1616-8W

1. INTRODUCTION

The CS1616 is a 230VAC quasi-resonant flyback mode dimmable LED controller IC. The CS1616 uses a digital con-

trol algorithm that is optimized for high efficiency and >0.9 power factor over a wide input voltage range (207VAC

to 253VAC). The CS1616 integrates a dimmer compatibility circuit with a constant output current, quasi-resonant

flyback stage. An adaptive dimmer compatibility algorithm controls the dimmer compatibility operation mode to en-

able flicker-free operation from 0% to 100% output current with leading-edge, trailing-edge, and digital dimmers.

The CRD1616-8W board is optimized to deliver low system cost in a high-efficiency, flicker-free, phase-dimmable,

solid-state lighting (SSL) solution for incandescent lamp replacement applications. The feedback loop is closed

through an integrated digital control system within the IC. Protection algorithms such as output open/short,

current-sense resistor open/short, and overtemperature thermistors protect the system during abnormal conditions.

When using the CS1616 for a design that does not require active clamp circuitry, the CLAMP pin should be left

floating. Details of these features are provided in the CS1616/16 data sheet DS961 Single Stage Dimmable Offline

AC/DC Controller for LED Lamps.

The CRD1616-8W board demonstrates the performance of the CS1616. This reference board has been designed

for an output load of 10LEDs in series at 250mA (28V typical).

This document provides the schematic for the board. It includes oscilloscope screen shots that indicate various op-

erating waveforms. Graphs are also provided that document the performance of the board in terms of Efficiency vs.

Line Voltage, Output Current vs. Line Voltage, and Output Current vs. Dim Angle for the CS1616 dimmable LED

controller IC.

Extreme caution needs to be exercised while handling this board. This board is to be used by trained professionals

only.

DS1003RD4

3

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