SLVSDV6C
November 2017 – November 2019
TPS62821
,
TPS62822
,
TPS62823
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application Schematic space space space space
Efficiency vs Output Current space
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable / Shutdown and Output Discharge
8.3.2
Soft-Start
8.3.3
Power Good (PG)
8.3.4
Undervoltage Lockout (UVLO)
8.3.5
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Pulse Width Modulation (PWM) Operation
8.4.2
Power Save Mode (PSM) Operation
8.4.3
Minimum Duty Cycle and 100% Mode Operation
8.4.4
Current Limit and Short Circuit Protection
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design With WEBENCH® Tools
9.2.2.2
Setting the Adjustable Output Voltage
9.2.2.3
Feed-forward Capacitor Selection
9.2.2.4
Output Filter Selection
9.2.2.5
Inductor Selection
9.2.2.6
Output Capacitor Selection
9.2.2.7
Input Capacitor Selection
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Related Links
12.3
Receiving Notification of Documentation Updates
12.4
Community Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
1
Features
DCS-Control™ topology
26-mΩ/25-mΩ internal power switches (TPS62823)
Up to 3-A output current (TPS62823)
Very low quiescent current of 4 µA
Switching frequency of typically 2.2 MHz
1% feedback voltage accuracy (full temp. range)
Enable (EN) and power good (PG)
Adjustable output voltage from 0.6 V to 4 V
100% duty-cycle mode
Internal soft-start circuitry
Seamless power save mode transition
Undervoltage lockout
Active output discharge
Cycle-by-cycle current limit
HICCUP short-circuit protection
Over temperature protection
CISPR11 class B compliant
Create a custom design using the TPS62822 with the
WEBENCH® Power Designer