UCC28951
- Enhanced zero-voltage switching (ZVS) range
- Direct synchronous rectifier (SR) control
- Light-load efficiency management including:
- Burst mode operation
- Discontinuous conduction mode (DCM), dynamic SR on/off control with programmable threshold
- Programmable adaptive delay
- Average- or peak-current mode control with programmable slope compensation and voltage-mode control
- Closed-loop soft-start and enable function
- Programmable switching frequency up to 1 MHz with bidirectional synchronization
- (±3%) cycle-by-cycle current limit protection with hiccup mode support
- 150-µA start-up current
- VDD undervoltage lockout
- Wide temperature range: –40°C to +125°C
The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC28951 uses advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.
Programmable delays ensure ZVS operation over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.
The 24-pin, TSSOP package complies with RoHS requirements.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | UCC28951 Phase-Shifted Full-Bridge Controller for Wide-Input Voltage Range Applications datasheet (Rev. A) | PDF | HTML | 2021年 12月 7日 |
| Application note | UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D) | PDF | HTML | 2022年 3月 4日 | |
| Application note | Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 | 2017年 11月 13日 | ||
| EVM User's guide | Using the UCC27714EVM-551 for Evaluating the UCC28951-Q1 | 2016年 10月 6日 | ||
| More literature | Design review of a 2-kW parallelable power supply module | 2016年 8月 17日 | ||
| More literature | Design review of a 2-kW parallelable power supply module (PPT) | 2016年 8月 17日 |
設計與開發
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UCC27714EVM-551 — UCC27714 600W 相移全橋轉換器評估模組
This 600W EVM was designed to demonstrate how the UCC28950 control IC, UCC27524A and UCC27714 gate drivers could be used in a phase shifted full bridge converter that achieves ZVS from 50 to 100% load.
UCC28950 and UCC28951 TINA-TI Startup Reference Design (Rev. A)
UCC28950 and UCC28951 TINA-TI Steady State Reference Design (Rev. A)
PMP8740 — 具有 92% 全負載效率的 2-kW 工業用交流/直流電池充電器參考設計
| 封裝 | 引腳 | 下載 |
|---|---|---|
| TSSOP (PW) | 24 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點