LM5034
- Two Independent PWM Current Mode Controllers
- Integrated High Voltage Startup Regulator
- Compound 2.5A Main Output Gate Drivers
- Single Resistor Oscillator Setting to 2 MHz
- Synchronizable Oscillator
- Active Clamp Gate Driver for P-Channel MOSFETs
- Adjustable Gate Drive Overlap Time
- Programmable Maximum Duty Cycle
- Maximum Duty Cycle Fold-Back at High Line Voltage
- Adjustable Timer for Hiccup Mode Current Limiting
- Integrated Slope Compensation
- Adjustable Line Under-Voltage Lockout
- Independently Adjustable Soft-Start (Each Regulator)
- Direct Interface with Opto-Coupler Transistor
- Thermal Shutdown
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The LM5034 dual current mode PWM controller contains all the features needed to control either two independent forward/active clamp dc/dc converters or a single high current converter comprised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5034 includes a startup regulator that operates over a wide input range up to 100V and compound (bipolar + CMOS) gate drivers that provide a robust 2.5A peak sink current. The adjustable dead-time of the active clamp gate drivers and adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line under-voltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable restart delay, PWM slope compensation, soft-start, and a 2 MHz capable oscillator with synchronization capability.
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 | LM5034 High Voltage Dual Interleaved Current Mode Controller with Active Clamp datasheet (Rev. A) | 2013/3/29 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Operation and Benefits of Active-Clamp Forward Power Converters | 2007/3/22 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 20 | Ultra Librarian |
訂購與品質
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