The TPS92020D is a high-performance resonant-switching LED driver controller. It is designed for use in higher power LED lighting systems. The TPS92020D 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 TPS92020D 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 TPS92020D 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.
Feature
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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
