EVAL_3823A_1.2VOUT

Overview

IR3823A evaluation board configured for 1.2 V output

The EVAL_3823A_1.2VOUT demonstrates a typical application design of IR3823A, a fully integrated 3 A DC-DC buck regulator that uses a compensation-free fast constant-on-time (COT) control. The board enables complete configuration and showcases the key benefits of IR3823A, i.e., easy-to-use fast COT PWM engine, high efficiency, accurate output voltage regulation, superior transient response, low BOM, etc.

Summary of Features

  • Vin = +12 V, Vout = +1.2 V at 0 to 3 A
  • Fsw = 1000 kHz
  • L = 1.5 uH (4.0 mmx4.0 mmx2.1 mm, DCR = 14.4 mΩ)
  • Cin = 4x22 µF (25 V, ceramic 0805) + 1x4.7 µF (6.3 V, ceramic 0603) + 1x0.1 µF (50 V, ceramic 0402) + 2x100 µF (25 V, electrolytic, optional)
  • Cout = 1x47 µF (6.3 V, ceramic 0805) + 1x4.7 µF (6.3 V, ceramic 0603) + 1x0.1 µF (50 V, ceramic 0402)

Benefits

  • Quick evaluation of key features of IR3823A
  • Efficiency, output ripple, and transient performance testing at 1.2 Vout

Potential Applications

List of Components

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