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.

• Qualified for Automotive Applications
• 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 (λJC = 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
• APPLICATIONS
  • Power Modules
  • Networking/Telecom
  • Industrial
  • Servers

PowerPAD is trademark of Texas Instruments.