ZHCSK92E September 2019 – March 2022 TPS25840-Q1 , TPS25842-Q1
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 Revision History
- 5 說(shuō)明（續(xù)）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
- 9 Parameter Measurement Information
-
10Detailed Description
- 10.1 Overview
- 10.2 Functional Block Diagram
- 10.3
Feature Description
- 10.3.1 Buck Regulator
- 10.3.2 Enable/UVLO
- 10.3.3 Switching Frequency and Synchronization (RT/SYNC)
- 10.3.4 Spread-Spectrum Operation
- 10.3.5 VCC, VCC_UVLO
- 10.3.6 Minimum ON-time, Minimum OFF-time
- 10.3.7 Internal Compensation
- 10.3.8 Bootstrap Voltage (BOOT)
- 10.3.9 RSNS, RSET, RILIMIT and RIMON
- 10.3.10 Overcurrent and Short Circuit Protection
- 10.3.11 Overvoltage, IEC and Short-to-Battery Protection
- 10.3.12 Cable Compensation
- 10.3.13 USB Port Control
- 10.3.14 FAULT Response
- 10.3.15 USB Specification Overview
- 10.3.16 Device Power Pins (IN, CSN/OUT, and PGND)
- 10.3.17 Thermal Shutdown
- 10.4 Device Functional Modes
-
11Application and Implementation
- 11.1 Application Information
- 11.2
Typical Application
- 11.2.1 Design Requirements
- 11.2.2
Detailed Design Procedure
- 11.2.2.1 Output Voltage
- 11.2.2.2 Switching Frequency
- 11.2.2.3 Inductor Selection
- 11.2.2.4 Output Capacitor Selection
- 11.2.2.5 Input Capacitor Selection
- 11.2.2.6 Bootstrap Capacitor Selection
- 11.2.2.7 VCC Capacitor Selection
- 11.2.2.8 Enable and Under Voltage Lockout Set-Point
- 11.2.2.9 Current Limit Set-Point
- 11.2.2.10 Cable Compensation Set-Point
- 11.2.2.11 FAULT Resistor Selection
- 11.2.3 Application Curves
- 12Power Supply Recommendations
- 13Layout
- 14Device and Documentation Support
- 15Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RHB|32
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RHB|32
訂購(gòu)信息
3 說(shuō)明
TPS2584x-Q1 是 USB Type-A BC1.2 充電解決方案，其中包括一個(gè)同步直流/直流轉(zhuǎn)換器。憑借電纜壓降補(bǔ)償，不管負(fù)載電流如何變化，Vbus 都保持恒定，確保即使在重負(fù)載期間也能以合適的電流和電壓為連接的便攜式設(shè)備充電。
TPS2584x-Q1 包括可實(shí)現(xiàn) DP 和 DM 直通的高帶寬模擬開(kāi)關(guān)。
TPS25840-Q1 還在 VBUS、DM_IN 和 DP_IN 引腳上集成了電池短路保護(hù)。這些引腳可承受最高 18V 的電壓。TPS25842-Q1 不支持?jǐn)?shù)據(jù)線(xiàn) (Dx) 對(duì) VBAT 短路保護(hù)。
器件信息(1)
| 器件型號(hào) | 封裝 | 封裝尺寸（標(biāo)稱(chēng)值） |
|---|---|---|
TPS25840-Q1 | 超薄四方扁平無(wú)引線(xiàn) (VQFN) (32) | 5.00mm x 5.00mm |
TPS25842-Q1 | 超薄四方扁平無(wú)引線(xiàn) (VQFN) (32) | 5.00mm x 5.00mm |
(1) 如需了解所有可用封裝，請(qǐng)參閱數(shù)據(jù)表末尾的可訂購(gòu)產(chǎn)品附錄。
TPS2584x-Q1 簡(jiǎn)化版原理圖
降壓效率與輸出電流間的關(guān)系 (fsw = 400 kHz)