LM5039
- 105V / 2A Half-Bridge Gate Drivers
- Synchronous Rectifier Control Outputs with Programmable Delays
- High Voltage (105V) Start-up Regulator
- Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting
- Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition
- Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event
- Adjustable Peak Cycle-by-Cycle Over Current Protection
- Resistor Programmed, 2MHz Capable Oscillator
- Patented Oscillator Synchronization
- Programmable Line Under-Voltage Lockout
- Internal Thermal Shutdown Protection
- Adjustable Soft-Start
- Direct Opto-Coupler Interface
- 5V Reference Output
Packages
- HTSSOP-20 (Thermally enhanced)
- WQFN-24 (4mm x 5mm)
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The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM5039 Half-Bridge PWM Controller with Average Current Limit datasheet (Rev. D) | 2013/3/21 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Average Current Limit Balances Center Point of Half-Bridge Input Caps | 2010/4/28 |
設計與開發
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This is a 350W High Speed Full Bridge Phase Shift ZVT Synchronous Rectification DC/DC reference design. It is built for telecom applications to supply a RF Power Amplifier stage. The design is utilizing UCC28950 voltage mode forward and average current limitation backward converter (two quadrant (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (NHZ) | 24 | Ultra Librarian |
| HTSSOP (PWP) | 20 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。