PMP41140
280W digital asymmetrical half bridge (AHB) DC-DC converter reference design
PMP41140
概覽
This document provides the test report for a digitally controlled asymmetrical half-bridge (AHB) converter, a flyback-derived resonant topology designed for high- efficiency and wide-output power conversion. The control algorithm implements zero-voltage switching (ZVS) control using a fast pulse-width modulation (PWM) on-time calculation and adaptive zero-voltage detection (ZVD) technique to maintain boundary ZVS across varying input and load conditions. The control algorithm also includes programmable zero - crossing detection (ZCD) count control, adaptive soft-start, and inductance compensation algorithms to maintain stable performance under production variations.
This evaluation board achieves a peak efficiency of 97.8% at 28V and 9A condition; targeting high-power applications (greater than 100W) such as USB PD adapters, industrial chargers, and power tools.
特點
- 97.8% efficiency with 390VBUS, 28V at 9A
- Integrated half-bridge GaN FET used in system
- Multimode to optimize system performance in different output spec
- Adaptive boundary ZVS control
| 輸出電壓選項 | PMP41140.1 |
|---|---|
| Vin (最小值) (V) | 300 |
| Vin (最大值) (V) | 420 |
| Vout (Nom) (V) | |
| Iout (最大) (A) | 12 |
| 輸出功率 (W) | |
| 隔離式/非隔離式 | Isolated |
| 輸入類型 | DC |
| 拓撲結構 | Half Bridge- Resonant |
已開發完全組裝的電路板，僅供測試與性能驗證，且為非賣品。
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技術文件
| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 測試報告 | 280W Digital Asymmetrical Half Bridge (AHB) DC-DC Converter Reference Design | PDF | HTML | 2026/1/12 |