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TPS563900 Evaluation Module, 18Vin, 3.5A/3.5A Dual Synchronous Step-down Converter w Voltage Scaling



  • Dual Step-Down Outputs, Both Output Up to 3.5-A Maximum Continuous Current
  • Two Outputs can be Paralleled to Deliver Up to 7-A Current
  • 4.5-V to 18-V Input Voltage - I2C Controlled 7-Bits Voltage Scaling, Output Voltage from 0.68 V to 1.95 V with 10-mV Steps for Each Outputs
  • Output Voltage can also be Set by a Pair of External Resistor Divider
  • Programmable Slew-Rate Control for Output-Voltage Transition
  • I2C Read Back Power Good Status and Die Temperature Warning
  • Pulse-Skipping Mode to Achieve High Efficiency in Light Loads
  • Adjustable Switching Frequency 200 kHz to 1.6 MHz Set by External Resistor
  • Dedicated Enable and Soft-Start for Each Output
  • Peak Current-Mode Control with Simple Compensation Circuit
  • Cycle-by-Cycle Over-current Protection
  • 180< Out-of-Phase Operation to Reduce Input Filter and Power Supply Conduced Noise
  • Over-temperature Protection

Texas Instruments  TPS563900EVM-574

The TPS563900 is a, 2-output, 3.5-A/3.5-A synchronous step-down voltage regulator. The TPS563900 employs constant frequency peak current mode control. The operating frequency range is 200 kHz to 1600 kHz and allows this switch mode power supply (SMPS) to be optimized for size or efficiency. The TPS563900 supports a variety of output filter capacitor types including special polymer and ultra-low ESR ceramic capacitors. The TPS563900 can operate in forced CCM or pulse skipping DCM for high efficiency during light load operation. The TPS563900 features I2C interface and VID voltage scaling over a range of 0.68V to 1.95V. The TPS56390EVM-574 evaluation board operates from an input voltage range of 4.5 V to 18 V and is preset to supply 1.1 V at 3.5 A output on VOUT1 and 1.0 V at 3.5 A output on VOUT2.