PMP31276
288W PFC, LLC and bidirectional battery charger reference design
PMP31276
概覽
This reference design is an AC/DC battery-backup charger with two outputs: system and battery. A 4-SW bidirectional buck-boost charges the battery and supplies system load. An optional microcontroller disables main power sections, reducing stand-by power while collecting parameters for telemetry.
特點
- Achieves 91.8% efficiency at 230VAC with all power stages on (PFC, LLC and battery charger)
- Good option for backup supply in alarm panels and uninterruptible power delivery
- Interleaving modulation in the PFC allows input filter and output capacitor ripple-current reduction, while minimizing the height thanks to two-phase power stage
- The LLC stage enhances light load efficiency (standby power and audible noise) thanks to high and low frequency burst mode scheme
- The third stage provides battery management and leverages power path and bidirectional power flow to achieve the highest efficiency possible, while charging the battery and supplying system power
| 輸出電壓選項 | PMP31276.1 | PMP31276.2 | PMP31276.3 |
|---|---|---|---|
| Vin (最小值) (V) | 85 | 350 | 23.5 |
| Vin (最大值) (V) | 265 | 420 | 24.5 |
| Vout (Nom) (V) | 400 | 24 | 24 |
| Iout (最大) (A) | .75 | 12 | 12 |
| 輸出功率 (W) | 300 | 288 | 288 |
| 隔離式/非隔離式 | Non-Isolated | Isolated | Non-Isolated |
| 輸入類型 | AC | DC | DC |
| 拓撲結構 | PFC- Multiphase | Half Bridge- LLC | Buck Boost- 4 Switch |
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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| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 測試報告 | 288W PFC, LLC and Bidirectional Battery Charger Reference Design | PDF | HTML | 2026/7/2 |