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.
Summary of Features
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)
Benefits
Quick evaluation of key features of IR3447A
Efficiency, output ripple, and transient performance testing at 1.2 Vout
Potential Applications
Telecom
Server
Storage
Datacom
Distributed POL architectures
List of Components
IR3447A
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.
Summary of Features
- 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)
Benefits
- Quick evaluation of key features of IR3447A
- Efficiency, output ripple, and transient performance testing at 1.2 Vout
Potential Applications
- Telecom
- Server
- Storage
- Datacom
- Distributed POL architectures
List of Components
