ZHCSBP7C October 2013 – December 2018 TPS24750 , TPS24751
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
-
9 Detailed Descriptions
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3 Feature Description
- 9.4 Device Functional Modes
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10Application and Implementation
- 10.1 Application Information
- 10.2
Typical Application
- 10.2.1 Design Requirements
- 10.2.2
Detailed Design Procedure
- 10.2.2.1
Power-Limited Start-Up
- 10.2.2.1.1 STEP 1. Choose RSENSE, RSET, and RIMON
- 10.2.2.1.2 STEP 2. Choose Power-Limit Value, PLIM, and RPROG
- 10.2.2.1.3 STEP 3. Choose Output Voltage Rising Time, tON, and Timing Capacitor CT
- 10.2.2.1.4 STEP 4. Calculate the Retry-Mode Duty Ratio
- 10.2.2.1.5 STEP 5. Select R1, R2, and R3 for UV and OV
- 10.2.2.1.6 STEP 6. Choose R4, R5, and C1
- 10.2.2.2 Alternative Design Example: Gate Capacitor (dv/dt) Control in Inrush Mode
- 10.2.2.3 Additional Design Considerations
- 10.2.2.1
Power-Limited Start-Up
- 10.2.3 Application Curves
- 10.3 System Examples
- 11Power Supply Recommendations
- 12Layout
- 13器件和文檔支持
- 14機(jī)械、封裝和可訂購信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RUV|36
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RUV|36
訂購信息
9.3.11 SENSE
This pin connects to the negative terminal of RSENSE. It provides a means of sensing the voltage across this resistor, as well as a way to monitor the drain-to-source voltage across the internal FET. The current limit ILIM is set by Equation 3.
A fast-trip shutdown occurs when V(VCC – VSENSE) exceeds 60 mV.
SET: A resistor RSET is connected from this pin to the positive terminal of RSENSE. This resistor scales the current limit and power limit settings. It coordinates with RIMON and RSENSE to determine the current limit value. The value of RSET can be calculated from Equation 3 (see the SENSE definition).