PMP41133
Automotive 800V to 48V-300W μDC-DC converter reference design
PMP41133
概述
This reference design demonstrates a half-bridge LLC converter with an input voltage range from 450V to 800 (950V) by using the UCC256612. The design implements HV start-up and isolated gate driver, UCC5350 for 800 (950V) operation. The design replaces the optocoupler with an opto- emulator ISOM8110 to mitigate the signal degradation by current transfer ratio (CTR) over time. The design is an excellent choice for automotive μDC-DC and data center AUX applications.
特性
- Wide input operation voltage ranges from 450V to 800V (950V) by dedicated LLC controller
- > 96% full load efficiency with Schottky Rectifier in secondary side
- HV start-up circuit to lower the loss after system power-on
- Capability to drive low side-SiC FET directly
- Adaptive dead time control to minimize the conduction of 3rd quadrant current
- Opto-emulator design to mitigate signal degradation by CTR over time
| 输出电压选项 | PMP41133.1 |
|---|---|
| 输入电压（最小值）(V) | 450 |
| 输入电压（最大值）(V) | 800 |
| 输出电压（标称值）(V) | 48 |
| Iout（最大值）(A) | 6.5 |
| 输出功率 (W) | 312 |
| 隔离/非隔离 | Isolated |
| 输入类型 | DC |
| 拓扑 | Half Bridge- LLC |
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| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 测试报告 | Automotive 800V to 48V-300W μDC-DC Converter Reference Design | PDF | HTML | 2026-7-29 |