sigma

AT32_POWER_Synchronous rectification buck BUCK digital power supply

Overview

Develop DC_BUCK synchronous rectification digital power supply based on AT32F4.

Main control CPU: AT32F421F4P7 @120MHz
Input voltage: 5~35.0V
Output voltage: 0~30.0V
Output current: 0~6.00A
Switching frequency: 100KHz, single cycle 10us loop calculation once

5 working modes are available:

0: off

1: Open loop mode 1~96% duty cycle adjustable, step 1%
2: Constant voltage mode 0~30.0V adjustable, step 0.1V
3: Constant current mode 0~5.00A adjustable, step 0.01 A
4: Constant voltage + constant current combination, constant current takes priority

The attachment at32_power.hex is for testing use.

If there are any shortcomings, please suggest them for improvement.

When it is completed later, it will be open sourced for everyone to learn and use.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-07 00:12:27

My view on the competition between "Mobile Real Name and Mobile Shopping Mall" and "Mobile Industry Portal" in the 3G market
In January 2009, the Ministry of Industry and Information Technology issued 3G licenses to the three major operators, China Mobile, China Telecom and China Unicom. It seemed that overnight, the atmosp
[AN-1067 Application Note] Power Spectral Density of Phase Noise and Jitter: Theory, Data Analysis, and Experimental Results
Introduction: Jitter in the sampling clocks of analog-to-digital and digital-to-analog converters limits the maximum achievable signal-to-noise ratio.
Moderator Chip Coin Rewards in May 2011!
Moderator Chip Coins Distribution Requirements: Monthly Online Time>30 hours Monthly Posts>30 Posts Some Small Rules for Moderators: [url=https://bbs.eeworld.com.cn/thread-77551-1-1.html]https://bbs.e
Region Segmentation Technology for License Plate Recognition
Region Segmentation Technology for License Plate Recognition
【CN0206】Complete Thermocouple Measurement System Using the AD7793 24-Bit Sigma-Delta ADC
The circuit shown in Figure 1 is a complete thermocouple system based on the AD7793 24-bit Σ-Δ ADC. The AD7793 is a low power, low noise, complete analog front end for high precision measurement appli
I made a simplified version of jlink, short and powerful, show it
[i=s]This post was last edited by shower.xu on 2015-3-27 17:23[/i] Jlink is an indispensable tool for debugging ARM frequently. I bought a copycat V8 before, and it was often banned. Although the prob

Datasheet More

Circuits More