EVAL_3447A_1.2VOUT

综述

IR3447A evaluation board configured for 1.2 V output

The EVAL_3447A_1.2VOUT demonstrates a typical application design of IR3447A OptiMOS™ IPOL, a fully integrated 25 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 IR3447A, i.e., easy-to-use fast COT PWM engine, high efficiency, accurate output voltage regulation, superior transient response, low BOM, etc.

特征描述

  • Vin = +12 V, Vout = +1.2 V at 0 to 25 A
  • Fsw = 600 kHz
  • L = 150 nH (11.15 mmx10 mmx 3.8 mm, DCR = 0.55 mΩ)
  • Cin = 1x2.2 nF (25 V, ceramic 0402) + 1x4.7 nF (25 V, ceramic 0603) + 4x22 µF (25 V, ceramic 0805) + 2x100 µF (25 V, polymer, optional)
  • Cout = 6x47 µF (6.3 V, ceramic 0805) + 1x4.7 µF (6.3 V, ceramic 0603) + 1x0.1 µF (50 V, ceramic 0402) + 1x470 uF (2.5 V, 3 mΩ, SP-cap)

优势

  • Quick evaluation of key features of IR3447A
  • Efficiency, output ripple, and transient performance testing at 1.2 Vout

潜在应用

List of Components

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