TP8311 datasheet(1/7 Pages) TPOWER

Part #	TP8311

Description	High-power factor primary-side feedback LED driver chip for PWM dimming

PDF	7 Pages

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Manufacturer	TPOWER [Shenzhen Tianyuan Semiconductor Co., Ltd.]

Direct Link	http://www.tpower-ic.com/

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TP8311

PWM 调光的高功率因数原边反馈 LED 驱动芯片

V1.1

Shenzhen TPOWER Semiconductor

1

概述

TP8311是一款具有PWM调光功能的高功率因数原边反馈

LED恒流驱动芯片。芯片集成了单级有源功率因数校正电

路，特别适合于85VAC~265VAC全电压输入范围的高性能

隔离式LED照明系统调光应用。

TP8311集成了PWM调光功能。LED输出电流可以通过外部

的PWM信号来进行调节，从而实现PWM调光功能。TP8311

集成了单级有源功率因数校正电路，系统可以实现很高的

功率因数和很低的输入电流总谐波失真。TP8311工作在准

谐振开关模式，功率管处于零电流状态导通。这有效地减

小了功率管的开关损耗，改善了系统的EMI特性。

TP8311采用原边反馈的控制方式，通过原边反馈的信息即

可以实现高精度的LED恒流输出，并不需要光耦、次级反馈

等电路。这节约了系统的成本和体积，简化了LED照明系统

的设计。TP8311集成了线电压和负载补偿功能，系统具有

优异的线电压调整率和负载调整率。

TP8311工作电压范围宽，适用于85VAC~265VAC全电压

范围的交流输入。同时TP8311集成了多种保护功能以保证

系统的稳定和可靠。包括VCC供电过压保护，VCC供电欠

压保护，LED开路、短路保护，芯片过温保护和变压器初级

绕组逐周期限流等。

特点

 集成 PWM 调光功能

 内置单级有源 PFC 功能

 输入电流总谐波失真低

 原边反馈恒流控制，无需次级反馈电路

 准谐振开关模式，开关损耗小

 ±3%的 LED 输出电流精度

 优异的线电压调整率和负载调整率

 超低启动电流

 LED 输出开路保护

 LED 输出短路保护

 VCC 供电过压保护

 VCC 供电欠压保护

 CS 逐周期限流

 芯片过温保护

 自动重启动功能

 采用 SOP8L 封装

应用

 LED 球泡灯，LED 射灯

 LED 日光灯，LED 筒灯

 LED 吸顶灯，LED PAR 灯

 其它 LED 照明

典型应用电路

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TP8311 Datasheet(PDF) 1 Page - Shenzhen Tianyuan Semiconductor Co., Ltd.

TP8311 Datasheet(HTML) 1 Page - Shenzhen Tianyuan Semiconductor Co., Ltd.

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