MAXREFDES1205: 2.5V/10A, Synchronous Step-Down Converter Using the MAX20098
|Input Type||VIN (MIN)
The MAXREFDES1205 demonstrates how to build a DC-DC buck converter using the MAX20098 controller for 2.5V DC output applications from a 4.5V to 16V input. This reference design delivers up to 10A at a 2.5V output. The design uses a six-layer PC board with two-side component placement. An overview of the design specification is shown above.
- Efficiency > 85% at Full Load
- Output-Voltage Ripple < 25mV across Line and Load Conditions
- Overshoot < 75mV for 50% Load Step
- Continuous Conduction Mode (CCM) Operation
- Internal Soft-Start
- Overall Solution Size = 600mm2
Designed, Built, Tested
The reference design provides a detailed systematic technical guide for the design of buck converter using the MAX20098 for high voltage and small size. The hardware is shown in the photo above. The small board shows the solution size. See the MAX20098 data sheet and the MAX20098 EV kit data sheet for device operation details. The power supply has been built and tested, details of which are available in the Design Resources documents.