MAX17504
Maxim Integrated
This document explains how the MAX17504 peak-current-mode PWM converter can be used to generate 5V from an input voltage of 7.5V to 60V.
Reference DesignAnalog
MAXREFDES1049: 5V/3.5A Synchronous Buck DC-DC Converter
A reference design for a 5V/3.5A synchronous buck DC-DC converter using the MAX17504, featuring 7.5V to 60V input and CISPR 22 Class B EMI compliance.
Overview
The MAXREFDES1049 is a high-efficiency DC-DC buck power supply reference design based on the MAX17504 peak-current-mode PWM converter. It delivers a regulated 5V output at up to 3.5A from a wide input voltage range of 7.5V to 60V. The design is specifically optimized for low electromagnetic interference (EMI) and has passed CISPR 22 Class B conducted emission testing. The document provides detailed technical guidance on the design process, including switching frequency selection, inductor and capacitor sizing, and the implementation of a π-filter for EMI mitigation. The MAX17504 features integrated MOSFETs, synchronous rectification for up to 93% efficiency, and internal compensation to simplify the circuit design.
Use Cases
- Industrial power supplies
- EMI-compliant equipment design
- High-voltage input DC-DC conversion
- Distributed power bus regulation
- General purpose 5V/3.5A power modules
Topics
MAXREFDES1049
MAX17504
MAX17504S
synchronous buck converter
DC-DC converter
EMI compliance
CISPR 22 Class B
step-down converter
power supply design
PWM converter
Referenced Parts
MAX17504S
Maxim Integrated
For the MAX17504S, select fC to be 1/10th of fSW if fSW is less than or equal to 1MHz.
| MAX17504 | Maxim Integrated | This document explains how the MAX17504 peak-current-mode PWM converter can be used to generate 5V from an input voltage of 7.5V to 60V. |
| MAX17504S | Maxim Integrated | For the MAX17504S, select fC to be 1/10th of fSW if fSW is less than or equal to 1MHz. |