Texas Instruments TPS56C231 12A Synchronous Buck Converter

Texas Instruments TPS56C231 12A Synchronous Buck Converter is a small, high-efficiency, synchronous buck converter with an adaptive on-time D-CAP3 control mode. External compensation is not required because the device is easy to use and requires few external components. The device is well-suited for space-constrained data center applications.

The TPS56C231 has competitive features, including a fast load transient response, a very accurate reference voltage, no requirement for external compensation, and an adjustable current limit. Eco-mode and FCCM operation modes are available for selection at light-load conditions through the MODE pin configuration. To attain high efficiency at a light load, Eco-mode can be selected. To support tight output voltage ripple requirements, FCCM can be chosen. The Texas Instruments TPS56C231 operates from a –40°C to 125°C junction temperature range.

Features

4.5V to 17V input range without external bias
3.8V to 17V input range with external bias
Supports 12A continuous output current
TPS56C231 supports 15A peak current
Integrated 7.8mΩ and 3.2mΩ MOSFETs
0.6V ±1% reference voltage across a –40°C to 125°C junction temperature range
0.6V to 5.5V output voltage range
146µA low quiescent current
D-CAP3™ control mode for fast transient response
Supports ceramic output capacitors
Selectable fSW of 400kHz, 800kHz, and 1200kHz
Selectable FCCM (forced continuous conduction mode) for tight output voltage ripple

Selectable Eco-mode (auto skip mode) for high light-load efficiency
Optional external 5V bias for enhanced efficiency
Prebiased start-up capability
Adjustable soft start with a default 1.2ms soft-start time
Power-good indicator to monitor the output voltage
Two adjustable current limit settings with hiccup restart: TPS56C231 (14.7A, 17A) and TPS56C231L (11.5A, 13.8A)
Non-latched protections for UV, OV, OT, and UVLO
Pin-to-pin compatible with 12A TPS56C215, 8A TPS568231 and 8A TPS568215
–40°C to 125°C operating junction temperature
3.5mm × 3.5mm, 18-pin HotRod™ QFN package