UCD74106
- Fully Integrated Power Switches With Drivers for Single and Multiphase Synchronous Buck Converters
- Full Compatibility With TI Fusion Digital Power Supply Controllers, (UCD91xx and UCD92xx Families)
- Compatible With Analog Domain Controllers
- Wide Input Voltage Range:
- 4.5 V to 14 V
- Operational Down to 2.2-V Input With an External Bias Supply
- Up to 6-A Output Current
- Operational to 2-MHz Switching Frequency
- Current Limit With Current Limit Flag
- Onboard Regulated 6-V Driver Supply From VIN
- Thermal Protection and Monitoring
The UCD74106 is a complete power system ready to drive a buck power supply (). High-side MOSFETs, low-side MOSFETs, drivers, current sensing circuitry and necessary protection functions are all integrated into one monolithic solution to facilitate minimum size and maximum efficiency. Driver circuits provide high charge and discharge current for the high-side NMOS switch and the low-side NMOS synchronous rectifier in a synchronous buck circuit. The MOSFET gates are driven to 6.25 V by an internally regulated VGG supply. The internal VGG regulator can be disabled to permit the user to supply an independent gate drive voltage. This flexibility allows a wide power conversion input voltage range of 2.2 V to 18 V. Internal Under Voltage Lockout (UVLO) logic insures VGG is good before allowing chip operation.
A drive logic block allows operation in one of two modes. In synchronous mode, the logic block uses the PWM signal to control both the high-side and low-side gate drive signals. Dead time is optimized to prevent cross conduction. The synchronous rectifier enable (SRE) pin controls whether or not the low-side FET is turned on when the PWM signal is low.
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 | Synchronous-Buck Power Stage datasheet (Rev. A) | 2012/12/19 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 |
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)。
FUSION_DIGITAL_POWER_DESIGNER — 數位電源軟體
Fusion Digital Power™ 圖形使用者介面 (GUI) 軟體用於配置和監控選擇的德州儀器數位電源控制器和序列器/健康狀態監控器。該應用程式使用 PMBus 協定，透過 TI USB 轉接器經由序列匯流排與裝置通訊。
FUSION_MFR_GUI — Fusion Digital Power 製造工具
The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .
The MFR GUI supports the same devices as Fusion Digital Power Designer software. This tool is typically used in manufacturing (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RGM) | 13 | Ultra Librarian |
訂購與品質
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