SNOSD91B
March 2019 – February 2020
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Block Diagram
Switching Performance
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
Switching Characteristics
6.7
Typical Characteristics
7
Parameter Measurement Information
7.1
Switching Parameters
7.2
Turn-on Delays
7.3
Turn-off Delays
7.4
Drain Slew Rate
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Direct-Drive GaN Architecture
8.3.2
Internal Buck-Boost DC-DC Converter
8.3.3
Internal Auxiliary LDO
8.3.4
Start Up Sequence
8.3.5
R-C Decoupling for IN pin
8.3.6
Low Power Mode
8.3.7
Fault Detection
8.3.7.1
Overcurrent Protection
8.3.7.2
Over-Temperature Protection and UVLO
8.3.8
Drive Strength Adjustment
8.4
Safe Operation Area (SOA)
8.4.1
Repetitive SOA
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
Slew Rate Selection
9.2.2.1.1
Startup and Slew Rate with Bootstrap High-Side Supply
9.2.2.2
Signal Level-Shifting
9.2.2.3
Buck-Boost Converter Design
9.3
Dos and Don'ts
10
Power Supply Recommendations
10.1
Using an Isolated Power Supply
10.2
Using a Bootstrap Diode
10.2.1
Diode Selection
10.2.2
Managing the Bootstrap Voltage
10.2.3
Reliable Bootstrap Start-up
11
Layout
11.1
Layout Guidelines
11.1.1
Power Loop Inductance
11.1.2
Signal Ground Connection
11.1.3
Bypass Capacitors
11.1.4
Switch-Node Capacitance
11.1.5
Signal Integrity
11.1.6
High-Voltage Spacing
11.1.7
Thermal Recommendations
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Documentation
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
8.4
Safe Operation Area (SOA)