Cirrus-logic AN374 Manual do Utilizador descarregar pdf (Página 4)

AN374

4 AN374REV2

2 Introduction

This application note provides a guide to designing a solid-state lighting (SSL) LED lamp circuit using Cirrus Logic's

CS1630/31. The first half of the document presents an introduction to the CS1630/31 color control system and the

criterion for selecting a compatible light engine. The second half of the document supports the design effort by de-

tailing the requirements to curve fit the polynomial gain equations for a robust color correlation temperature solution.

2.1 Definition of Acronyms

Acronym Description

PFC Power Factor Correction

ZCD Zero-current Detection

BOP Boost Overvoltage Protection

COP Clamp Overpower Protection

OVP Second-stage Output Open Circuit Protection and Overvoltage Protection

OCP Second-stage Overcurrent Protection

OLP Second-stage Open Loop Protection

SCP Short Circuit Protection

iOTP Internal Overtemperature Protection

eOTP External Overtemperature Protection

PLC Power Line Calibration

OTP One-time Programmable

LED Light Emitting Diode

TX Transformer

TRIAC

TRIode for Alternating Current, which is an electronic component that can conduct current in either

direction when it is triggered. It is formally called a bidirectional triode thyristor.

NTC

Negative Temperature Coefficient thermistor

SSL

Solid-state lighting. Refers to a type of lighting that uses semiconductor LEDs as a source of illumi-

nation rather than electrical filaments, plasma, or gas.

CSV Comma-separated Values File

CCT Correlated Color Temperature

DAC Digital-to-Analog Converter

1 2 3 4 5 6 7 8 9 ... 34 35

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