SLUSBW8
September 2014
TPS53632
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Handling Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics (2-Phase Operation)
6.9
Typical Characteristics (3-Phase Operation)
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Current Sensing
7.3.2
Load Transients
7.3.3
AutoBalance Current Sharing
7.3.4
PWM and SKIP Signals
7.3.5
5-V, 3.3-V and 1.8-V Undervoltage Lockout (UVLO)
7.3.6
Output Undervoltage Protection (UVP)
7.3.7
Overcurrent Protection (OCP)
7.3.8
Overvoltage Protection
7.3.9
Analog Current Monitor, IMON and Corresponding Digital Output Current
7.3.10
Addressing
7.3.11
I2C Interface Operation
7.3.11.1
Key for Protocol Examples
7.3.11.2
Protocol Examples
7.3.12
Start-Up Sequence
7.3.13
Phase Add and Drop Operation
7.3.14
Power Good Operation
7.3.15
Input Voltage Limits
7.3.16
Fault Behavior
7.4
Device Functional Modes
7.4.1
PWM Operation
7.5
Configuration and Programming
7.5.1
Operating Frequency
7.5.2
Overcurrent Protection (OCP) Level
7.5.3
IMON Gain
7.5.4
Slew Rate
7.5.5
Base Address
7.5.6
Ramp Selection
7.5.7
Active Phases
7.6
Register Maps
7.6.1
Voltage Select Register (VSR) (00h)
7.6.2
IMON Register (03h)
7.6.3
VMAX Register (04h)
7.6.4
Power State Register (06h)
7.6.5
SLEW Register (07h)
7.6.6
Lot Code Registers (10-13h)
7.6.7
Fault Register (14h)
8
Applications and Implementation
8.1
Application Information
8.1.1
3-Phase D-CAP+™, Step-Down Application
8.1.1.1
Design Requirements
8.1.1.2
Detailed Design Procedure
8.1.1.2.1
Step 1: Select Switching Frequency
8.1.1.2.2
Step 2: Set The Slew Rate
8.1.1.2.3
Step 3: Determine Inductor Value And Choose Inductor
8.1.1.2.4
Step 4: Determine Current Sensing Method
8.1.1.2.5
Step 5: DCR Current Sensing
8.1.1.2.6
Step 6: Select OCP Level
8.1.1.2.7
Step 7: Set the Load-Line Slope
8.1.1.2.8
Step 8: Current Monitor (IMON) Setting
8.1.1.3
Application Performance Plots
8.1.1.4
Loop Compensation for Zero Load-Line
9
Power Supply Recommendations
10
Layout
11
Device and Documentation Support
11.1
Trademarks
11.2
Electrostatic Discharge Caution
11.3
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RSM|32
MPQF195B
Thermal pad, mechanical data (Package|Pins)
RSM|32
QFND112H
Orderable Information
slusbw8_oa
slusbw8_pm
4 Revision History
DATE
REVISION
NOTES
September 2014
*
Initial release.