UCC2897A
- Low-output jitter
- Soft-stop shutdown of MAIN and AUX
- 110-V input startup function
- Ideal for active-clamp, reset-forward, flyback and synchronous rectifier uses
- Provides complementary auxiliary driver with programmable dead time (Turn-On Delay) between AUX and MAIN switches
- Peak current-mode control with 0.5-V cycle-by-cycle current limiting
- TrueDrive™ 2-A Sink, 2-A source outputs
- Trimmed internal-bandgap reference for accurate line UV and line OV threshold
- Programmable slope compensation
- High-performance 1-MHz synchronizable oscillator with internal timing capacitor
- Precise programmable maximum duty cycle
- PB-free lead finish package
The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.
The UCC2897A is a peak current-mode fixed-frequency high-performance pulse-width modulator. The controller includes the logic and the drive capability for the P-channel auxiliary switch along with a simple method of programming the critical delays for proper active-clamp operation.
Features include an internal programmable slope compensation circuit, precise DMAX limit, and a synchronizable oscillator with an internal-timing capacitor. An accurate line-monitoring function also programs the ON and OFF transitions of the converter with regard to the bulk input voltage, VIN.
The UCC2897A adds a second-level hiccup-mode current-sense threshold, bi-directional synchronization and input-overvoltage protection functionalities. The UCC2897A is offered in 20-pin TSSOP (PW) and 20-pin QFN (RGP) packages.
技術文件
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS2372-4EVM-006 — 適合 IEEE802.3bt PoE PD 應用的 TPS2372-4EVM 評估模組
The TPS2372 evaluation module (TPS2372-4EVM-006) contains evaluation and reference circuitry for the TPS2372, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications such as LED lighting and modules.
In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23880.
TPS2373-4EVM-758 — 適合 IEEE802.3bt PoE PD 應用的 TPS2373-4 評估模組
The TPS2373 evaluation module (TPS2373-4EVM-758) contains evaluation and reference circuitry for the TPS2373, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications. The EVM is designed with a 5V active clamp forward isolated converter for high efficiency, 70W PD (...)
UCC2897AEVM — UCC2897A 評估模組
The UCC2897A evaluation module (EVM) is an active clamp reset forward converter providing a 3.3-V regulated output at 30 A of load current, operating from a 48-V input. The design operates over the full 36-V to 72-V telecom input range, and is able to fully regulate down to zero load current. The (...)
UCC2897A TINA-TI Startup Transient Reference Design
UCC2897A TINA-TI Steady State Transient Reference Design
| 封裝 | 引腳 | 下載 |
|---|---|---|
| TSSOP (PW) | 20 | 檢視選項 |
| VQFN (RGP) | 20 | 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