TPS53915 Step-Down SWIFT Converter

By Texas Instruments 93

TPS53915 Step-Down SWIFT Converter

Texas Instruments' TPS53915 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low external-component count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.5% 0.6 V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation. The device also features programmability and fault report via PMBus to simplify the power-supply design.

A forced continuous-conduction mode helps meet tight voltage-regulation accuracy requirements for performance DSPs and FPGAs. The TPS53915 is available in a 28-pin QFN package and is specified from –40°C to 85°C ambient temperature.

  • Integrated 13.8 and 5.9 mΩ MOSFETs support 12 A continuous output current
  • Adjustments available via PMBus
    • Voltage margin and adjustment
    • Soft-start time
    • Power-on delay
    • VDD UVLO level
    • Fault reporting
    • Switching frequency
  • Supports all ceramic output capacitors
  • Reference voltage 600 mV ±0.5% tolerance
  • Output voltage range: 0.6 to 5.5 V
  • D-CAP3 control mode with fast-loads step response
  • Auto-skipping eco-mode for high light-load efficiency
  • FCCM for tight output ripple and voltage requirements
  • Eight selectable frequency settings from 200 kHz to 1 MHz

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