1FEATURES
• 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

APPLICATIONS
• Commercial / Industrial LED Lighting Drivers
• High Bay LED Lighting
• Low Bay LED Lighting
• Street LED Lighting
• Area LED Lighting
• Stadium LED Lighting
• LED Wall Washing
• LED DTV and Monitor Back-lighting
• Electronic Lighting Ballasts

DESCRIPTION
The TPS92023 is a high-performance resonantswitching
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
over-design of the power stage and, thus, further
reducing overall system cost.