A4926
Automotive Half-Bridge MOSFET Driver
Table of Contents
Features and Benefits
Description
Package
Typical Application
1
1
1
1
2
2
2
4
5
6
6
7
8
8
9
10
11
12
12
13
13
13
13
13
14
14
14
Gate Drive Passive Pull-Down
Dead Time
Gate Drive Control
Logic Control Inputs
Output Disable
Sleep Mode
Diagnostic Monitors
Status and Diagnostic Registers
Chip-Level Protection
Operational Monitors
Power Bridge and Load Faults
Fault Action
Fault Masks
Serial Interface
Configuration Registers
Diagnostic Registers
Control Register
15
15
15
16
16
17
17
17
17
18
19
21
21
22
24
24
24
25
26
31
31
31
31
32
33
34
35
Selection Guide
Absolute Maximum Ratings
Thermal Characteristics
Pinout Diagram and Terminal List Table
Functional Block Diagram
Electrical Characteristics
Supply and Reference
Gate Output Drive
Logic Inputs and Outputs
Logic I/O – Dynamic Parameters
Diagnostics and Protection
Timing Diagrams
Logic Truth Tables
Functional Description
Input and Output Terminal Functions
Power Supplies
Pump Regulator
Gate Drives
Status Register
Serial Register Reference
Application Information
Dead-Time Selection
Bootstrap Capacitor Selection
Bootstrap Charging
VREG Capacitor Selection
Input/Output Structures
Layout Recommendations
Package Outline Drawing
Bootstrap Supply
Bootstrap Charge Management
Top-Off Charge Pump
High-Side Gate Drive
Low-Side Gate Drive
Allegro MicroSystems, LLC
115 Northeast Cutoff
3
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com