Zeruns's Blog - English Site
[Open Source] PD65W GaN Charger (ACF), Based on DK8607AD, IP6538-AC-65W, XPM52CDP65
Electronics / Circuits

[Open Source] PD65W GaN Charger (ACF), Based on DK8607AD, IP6538-AC-65W, XPM52CDP65

An open-source 65W PD GaN charger design is presented, combining a DK8607AD-based Active Clamp Flyback (24V/3A) supply with IP6538 or XPM52CDP65 fast-charging DCDC boards. The GaN flyback boards failed during testing, while DCDC boards delivered up to 67.7W with ~95–96% efficiency. Schematics, PCB files, transformer specs, and fabrication materials are provided.

发布于 2026-03-02
[Open Source] SC8703-Based Adjustable Buck-Boost DC/DC Power Supply | Voltage & Current Adjustable, PD Fast Charge Input Supported
Electronics / Circuits

[Open Source] SC8703-Based Adjustable Buck-Boost DC/DC Power Supply | Voltage & Current Adjustable, PD Fast Charge Input Supported

An open-source buck-boost DC/DC module based on SC8703 accepts 2.7–36V input and outputs 1.21–36V with up to 10A, adjustable current limit, 600kHz switching, and 95.45% peak efficiency. It includes XT30 and Type-C PD input via CH224Q. Provided files: KiCad project, Gerbers, BOM, stencils, interactive BOM, and 3D models. Proper heatsinking is required; bare-board operation is recommended below 5A.

发布于 2026-02-23
Magnetic Components/Magnetic Core Materials & Structures: Analysis, Comparison & Selection Guide
Electronics / Circuits

Magnetic Components/Magnetic Core Materials & Structures: Analysis, Comparison & Selection Guide

This article provides a systematic guide to magnetic core selection for power electronics, covering key parameters (permeability, saturation, core loss, Curie temperature), comparing materials like ferrite, sendust, permalloy, amorphous and nanocrystalline alloys, and reviewing core structures (EE, PQ, toroidal). It offers engineering recommendations for AC/DC, DC/DC, PFC, and inverter applications, emphasizing frequency matching, loss control, and cost balance. Engineers gain practical reference for choosing cores.

发布于 2025-09-10
EG1164 High-Power Synchronous Rectification Boost Module Open Source with 97% Peak Efficiency
Electronics / Circuits

EG1164 High-Power Synchronous Rectification Boost Module Open Source with 97% Peak Efficiency

The article presents an open-source EG1164-based synchronous rectification boost converter module supporting 8–50V input, 8–60V adjustable output, and 219kHz switching. Test results show up to 97.3% efficiency and 287W output at 8A, with potential beyond 300W. It includes schematic, PCB layout, ripple measurements, and component purchasing guidance.

发布于 2025-02-16
EG1151 High-Power Synchronous Buck-Boost Power Module (Supports Type-C PD Fast Charging) Open Source
Electronics / Circuits

EG1151 High-Power Synchronous Buck-Boost Power Module (Supports Type-C PD Fast Charging) Open Source

An open-source high-power adjustable buck-boost DC-DC module based on the EG1151 chip is introduced, using fully domestic components. It supports Type-C PD3.1 up to 48V, XT60, and DC5.5 inputs, up to 63V and 20A, with overcurrent and over-temperature protection. Measured peak efficiency is 96.8%, though sustained current is about 18A. Schematics, PCB files, and 3D-printed enclosure models are provided.

发布于 2025-01-16

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