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.