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TPSM843620 4V to 18V Input, 6A, Buck Power Module With Internally Compensated, Advanced Current Mode Control
SLUSET8B
October 2023 – June 2024
TPSM843620
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TPSM843620 4V to 18V Input, 6A, Buck Power Module With Internally Compensated, Advanced Current Mode Control
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics (Module)
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
VIN Pins and VIN UVLO
6.3.2
Enable and Adjustable UVLO
6.3.3
Adjusting the Output Voltage
6.3.4
Switching Frequency Selection
6.3.5
Switching Frequency Synchronization to an External Clock
6.3.5.1
Internal PWM Oscillator Frequency
6.3.5.2
Loss of Synchronization
6.3.5.3
Interfacing the SYNC/FSEL Pin
6.3.6
Ramp Amplitude Selection
6.3.7
Soft Start and Prebiased Output Start-Up
6.3.8
Mode Pin
6.3.9
Power Good (PGOOD)
6.3.10
Current Protection
6.3.10.1
Positive Inductor Current Protection
6.3.10.2
Negative Inductor Current Protection
6.3.11
Output Overvoltage and Undervoltage Protection
6.3.12
Overtemperature Protection
6.3.13
Output Voltage Discharge
6.4
Device Functional Modes
6.4.1
Forced Continuous-Conduction Mode
6.4.2
Discontinuous Conduction Mode During Soft Start
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
1.0V Output, 1MHz Application
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.2.1
Switching Frequency
7.2.1.2.2
Output Inductor Selection
7.2.1.2.3
Output Capacitor
7.2.1.2.4
Input Capacitor
7.2.1.2.5
Adjustable Undervoltage Lockout
7.2.1.2.6
Output Voltage Resistors Selection
7.2.1.2.7
Bootstrap Capacitor Selection
7.2.1.2.8
BP5 Capacitor Selection
7.2.1.2.9
PGOOD Pullup Resistor
7.2.1.2.10
Current Limit Selection
7.2.1.2.11
Soft-Start Time Selection
7.2.1.2.12
Ramp Selection and Control Loop Stability
7.2.1.2.13
MODE Pin
7.2.1.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
7.4.2.1
Thermal Performance
8
Device and Documentation Support
8.1
Receiving Notification of Documentation Updates
8.2
Support Resources
8.3
Trademarks
8.4
Electrostatic Discharge Caution
8.5
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
SIT|15
MPQS048B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sluset8b_oa
sluset8b_pm
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TPSM843620 4V to 18V Input, 6A, Buck Power Module With Internally Compensated, Advanced Current Mode Control