UCC38050
- Transition Mode PFC Controller for Low Implementation Cost
- Industry Pin Compatibility With Improved Feature Set
- Improved Transient Response With Slew-Rate Comparator
- Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
- Accurate Internal VREF for Tight Output Regulation
- Two UVLO Options
- OVP, Open-Feedback Protection, and Enable Circuits
- ±750-mA Peak Gate Drive Current
- Low Start-Up and Operating Currents
- Lead (Pb)-Free Packages
The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic, and a totem-pole driver for driving an external FET.
In the transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | UCC2805x, UCC3805x Transition Mode PFC Controller datasheet (Rev. G) | PDF | HTML | 2015年 5月 5日 |
| User guide | PR320 UCC28050 100-W PFC Ballast Pre-Regulator | 2004年 8月 16日 | ||
| Application note | UCC38050 100W Critical Conduction (PFC) Reference Design (Rev. A) | 2004年 5月 3日 | ||
| User guide | 100-W Universal Line Input PFC Boost Converter Using the UCC38050 (Rev. B) | 2004年 2月 12日 |
設計與開發
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UCC28051EVM — UCC28051 評估模組
UCC38050-CALC — 適用 UCC38050 轉換模式 PFC 控制器的 MathCAD 計算工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| PDIP (P) | 8 | 檢視選項 |
| SOIC (D) | 8 | 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