SLUSEE5D
January 2022 – April 2024
TPS4811-Q1
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device Comparison Table
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Switching Characteristics
6.7
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Charge Pump and Gate Driver output (VS, PU, PD, BST, SRC)
8.3.2
Capacitive Load Driving
8.3.2.1
FET Gate Slew Rate Control
8.3.2.2
Using Precharge FET - (with TPS48111-Q1 Only)
8.3.3
Short-Circuit Protection
8.3.3.1
Overcurrent Protection With Auto-Retry
8.3.3.2
Overcurrent Protection With Latch-Off
8.3.4
Short-Circuit Protection
8.3.5
Analog Current Monitor Output (IMON)
8.3.6
Overvoltage (OV) and Undervoltage Protection (UVLO)
8.3.7
Device Functional Mode (Shutdown Mode)
8.3.8
Remote Temperature sensing and Protection (DIODE)
8.3.9
Output Reverse Polarity Protection
8.3.10
TPS4811x-Q1 as a Simple Gate Driver
9
Application and Implementation
9.1
Application Information
9.2
Typical Application: Driving HVAC PTC Heater Load on KL40 Line in Power Distribution Unit
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
9.3
Typical Application: Driving B2B FETs With Pre-charging the Output Capacitance
9.3.1
Design Requirements
9.3.2
External Component Selection
9.3.3
Application Curves
9.4
Power Supply Recommendations
9.5
Layout
9.5.1
Layout Guidelines
9.5.2
Layout Example
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Revision History
12
Mechanical, Packaging, and Orderable Information
9.2.3
Application Curves
Figure 9-2
Start-Up Profile of Bootstrap Voltage for INP = GND and C
BST
= 470 nF
Figure 9-4
Turn-ON Response of TPS48110-Q1 for INP -> LOW to HIGH and C
BST
= 470 nF
Figure 9-6
Overvoltage Cut-off Response at 58-V Level of TPS48110-Q1
Figure 9-8
IMON Response During 10-A Load Step
Figure 9-10
Auto-Retry Response of TPS48110-Q1 for an Overcurrent Fault
Figure 9-12
Response During Coming Out of Overload Fault With INP Reset
Figure 9-3
Start-Up Profile of Bootstrap Voltage for INP = HIGH and C
BST
= 470 nF
Figure 9-5
Turn-OFF Response of TPS48110-Q1 for INP -> HIGH to LOW and C
BST
= 470 nF
Figure 9-7
Load Switching at 100 Hz With TPS48110-Q1
Figure 9-9
Overcurrent Response of TPS48110-Q1 for a Load Step from 5 A to 18 A With 15-A Overcurrent Protection Setting
Figure 9-11
Latch-off Response of TPS48110-Q1 for an Overcurrent Fault
Figure 9-13
Output Hot-Short Response of the TPS48110-Q1 Device