SLUSB56B
November 2012 – April 2019
TPS53819A
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Application
4
Revision History
5
Pin Configuration and Functions
Pin 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
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Enable and Soft-Start
7.3.2
Adaptive On-Time Control
7.3.3
Zero Crossing Detection
7.3.4
Output Discharge Control
7.3.5
Low-Side Driver
7.3.6
High-Side Driver
7.3.7
Power Good
7.3.8
Current Sense and Overcurrent Protection
7.3.9
Overvoltage and Undervoltage Protection
7.3.10
Out-of-Bound Protection
7.3.11
UVLO Protection
7.3.12
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Light-Load Condition in Auto-Skip Operation (Eco-mode)
7.4.2
Forced Continuous Conduction Mode
7.4.3
D-CAP2™ Mode
7.5
Programming
7.5.1
PMBus General Descriptions
7.5.2
PMBus Slave Address Selection
7.5.3
PMBus Address Selection
7.5.4
Supported Formats
7.5.4.1
Direct Format: Write
7.5.4.2
Combined Format: Read
7.5.4.3
Stop-Separated Reads
7.5.5
Supported PMBus Commands
7.5.6
Unsupported PMBus Commands
7.6
Register Maps
7.6.1
OPERATION [01h] (R/W Byte)
7.6.2
ON_OFF_CONFIG [02h] (R/W Byte)
7.6.3
WRITE_PROTECT [10h] (R/W Byte)
7.6.4
CLEAR_FAULTS [03h] (Send Byte)
7.6.5
STORE_DEFAULT_ALL [11h] (Send Byte)
7.6.6
RESTORE_DEFAULT_ALL [12h] (Send Byte)
7.6.7
STATUS_WORD [79h] (Read Word)
7.6.8
CUSTOM_REG (MFR_SPECIFIC_00) [D0h] (R/W Byte)
7.6.9
DELAY_CONTROL (MFR_SPECIFIC_01) [D1h] (R/W Byte)
7.6.10
MODE_SOFT_START_CONFIG (MFR_SPECIFIC_02) [D2h] (R/W Byte)
7.6.11
FREQUENCY_CONFIG (MFR_SPECIFIC_03) [D3h] (R/W Byte)
7.6.12
VOUT_ADJUSTMENT (MFR_SPECIFIC_04) [D4h] (R/W Byte)
7.6.13
Output Voltage Fine Adjustment Soft Slew Rate
7.6.14
VOUT_MARGIN (MFR_SPECIFIC_05) [D5h] (R/W Byte)
7.6.15
Output Voltage Margin Adjustment Soft-Slew Rate
7.6.16
UVLO_THRESHOLD (MFR_SPECIFIC_06) [D6h]
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Switching Frequency
8.2.2.3
Inductor (L1)
8.2.2.4
Output Capacitors (C10, C11, C12, C13, C14)
8.2.2.5
Input Capacitors (C1, C2, C3, C4, C5)
8.2.2.6
MOSFET (Q1, Q2)
8.2.2.7
VREG Bypass Capacitor (C18)
8.2.2.8
VDD Bypass Capacitor (C19)
8.2.2.9
VBST Capacitor (C7)
8.2.2.10
Snubber (C8 and R9)
8.2.2.11
Feedback Resistance, RFBH and RFBL (R17 and R18)
8.2.2.12
Overcurrent Limit (OCL) Setting Resistance (R10)
8.2.2.13
PMBus Device Address (R3 and R4)
8.2.2.14
PGOOD Pullup Resistor (R2)
8.2.2.15
SCL and SDA Pulldown Resistors (R14 and R15)
8.2.2.16
PMBus Pullup Resistors
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RGT|16
MPQF119H
Thermal pad, mechanical data (Package|Pins)
RGT|16
QFND098S
Orderable Information
slusb56b_oa
slusb56b_pm
10.2
Layout Example
Figure 41.
Top Layer
Figure 42.
Bottom Layer