IR3899A evaluation board configured for 1.2 V output
The EVAL_3899A_1.2VOUT demonstrates a typical application design of IR3899A, a fully integrated 9 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 IR3899A, 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 9 A
Fsw = 600 kHz to 2000 kHz
L = 470 nH (11.15 mmx10.0 mmx3.8 mm, DCR = 1.3 mΩ)
Cin = 1x1 nF (50 V, ceramic 0402) + 1x4.7 nF (25 V, ceramic 0603) + 4x22 µF (25 V, ceramic 0805) + 2x100 µF (25 V, polymer, optional)
Cout = 3x47 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 IR3899A
Efficiency, output ripple, and transient performance testing at 1.2 Vout
Potential Applications
Telecom
Server
Storage
Datacom
Distributed POL architectures
List of Components
IR3899A
IR3899A evaluation board configured for 1.2 V output
The EVAL_3899A_1.2VOUT demonstrates a typical application design of IR3899A, a fully integrated 9 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 IR3899A, 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 9 A
- Fsw = 600 kHz to 2000 kHz
- L = 470 nH (11.15 mmx10.0 mmx3.8 mm, DCR = 1.3 mΩ)
- Cin = 1x1 nF (50 V, ceramic 0402) + 1x4.7 nF (25 V, ceramic 0603) + 4x22 µF (25 V, ceramic 0805) + 2x100 µF (25 V, polymer, optional)
- Cout = 3x47 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 IR3899A
- Efficiency, output ripple, and transient performance testing at 1.2 Vout
Potential Applications
- Telecom
- Server
- Storage
- Datacom
- Distributed POL architectures
List of Components
