TPS92020 - 用于 LED 照明的谐振开关驱动器控制器

TPS92020是TI德州仪器公司的一款LED照明-照明产品，TPS92020是用于 LED 照明的谐振开关驱动器控制器，本站介绍了TPS92020的封装应用图解、特点和优点、功能等，并给出了与TPS92020相关的TI元器件型号供参考。

TPS92020 - 用于 LED 照明的谐振开关驱动器控制器 - LED照明-照明 - LED驱动器 - 德州仪器

产品描述

The TPS92020 is a high-performance resonant-switching LED driver controller. It is designed for use in higher power LED lighting systems. The TPS92020 uses resonant switching in an LLC topology to achieve a very high efficiency compared to traditional half-bridge converters.

The programmable dead time enables zero-voltage switching with minimum magnetizing current, maximizing system efficiency across a variety of applications.

The TPS92020 can operate in two switching frequency modes. Fixed frequency allows for simple design when the load current is constant while variable switching allows for optimal closed-loop control for loads with varying currents. The internal oscillator supports the switching frequencies from 30 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost.

The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipments utilizing a half-bridge topology. The TPS92020 incorporates a 0.4-A source and 0.8-A sink for driving a low-cost gate driver transformer, delivering complete system protection functions including overcurrent, UVLO, bias supply OVP and OTP.

产品特性

LLC Resonant Switching Driver Controller for Multi-String LED Lighting Applications
Half-Bridge Topology
Fixed or Variable Switching Frequency Control
Programmable Soft-Start Time
Programmable Dead Time for Best Efficiency
Easy ON/OFF Control
Overcurrent Protection
Over-Temperature Protection
Bias Voltage UVLO and OVP
Integrated Gate Driver With 0.4-A Source and 0.8-A Sink Capability
Operating Temperature Range: –40°C to 125°C
SOIC 8-Pin Package

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