TPS5450: 5.5V to 36V, 5A, 500kHz Step Down SWIFT™ Converter
Product Information
Features
Operation Over 4.5-V to 28-V Input Range
Fixed-Frequency Voltage-Mode Controller
Integrated Unity Gain Amplifierfor Remote Output Sensing
Predictive Gate Drive™ Generation II for Improved Efficiency
<1% Internal 700-mV Reference
Input Voltage Feed Forward Control
Prebiased Output Compatible
Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
Switching Frequency Programmable to 1 MHz
20-Pin QFN Package
Thermal Shutdown Protection
Software Design Tool and EVM Available
APPLICATIONS
Power Modules
Networking/Telecom
Industrial
Servers
Predictive Gate Drive is a trademark of Texas Instruments.
Description
The TPS40075 is a mid voltage, wide input (4.5-V to 28-V),synchronous, step-down controller, offering design flexibility for a variety of user programmable functions, including; soft start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection.
The TPS40075 drives external N-channel MOSFETs using second generation Predictive Gate Drive to minimize conduction in the body diode of the low side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low side FET to turn on until the voltage commanded by the closed loop soft start is greater than the pre-bias voltage. Voltage feed forward provides good response to input transients and provides a constant PWM gain over a wide input voltage operating range to ease compensation requirements. Programmable short circuit protection provides fault current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 20-pin QFN package gives good thermal performance and a compact footprint.
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Inventory
Reported Distributor Inventory as of 10:09 AM GMT, 08 Nov 2009
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
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