TPS40053-Q1

 Qualification in Accordance With AEC-Q100(1)
 Qualified for Automotive Applications
 Customer-Specific Configuration Control Can
Be Supported Along With Major-Change
Approval
 Operating Input Voltage 8 V to 40 V
 Input Voltage Feed-Forward Compensation
 < 1 % Internal 0.7-V Reference
Programmable Fixed-Frequency Up to 1 MHz

Voltage Mode Controller
 Internal Gate Drive Outputs for High-Side and
Synchronous N-Channel MOSFETs
 16-Pin PowerPAD Package (JC = 2°C/W)
 Thermal Shutdown
 Externally Synchronizable

Programmable High-Side Current Limit
 Programmable Closed-Loop Soft-Start
 TPS40050 Source Only
 TPS40051 Source/Sink
 TPS40053 Source/Sink With VOUT Prebias

The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating Frequency, voltage feedforward, high-side current limit, and loop compensation.

The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.

The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients with near constant gain with input variation which eases loop compensation.The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation utilizing an internal fault counter for longer duration overloads.