TPS92023 Texas instruments

TPS92023

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TPS92023

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Описание

The TPS92023 is a high-performance resonant- switching LED driver controller. It is designed for use in higher power LED lighting systems. The TPS92023 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 TPS92023 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 380 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid of the power stage and, thus, further reducing overall system cost.

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

Control mode	Voltage
Features	Adjustable switching frequency, Enable/Shutdown, Programmable soft start, Soft switching, Thermal shutdown
Vin (min) (V)	11.5
Vin (max) (V)	18
Operating temperature range (°C)	-40 to 125
Topology	Half bridge, LLC
Rating	Catalog