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UCC20520 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Single Input
SLUSCN0A
November 2016 – January 2022
UCC20520
PRODUCTION DATA
CONTENTS
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UCC20520 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Single Input
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Power Ratings
6.6
Insulation Specifications
6.7
Safety-Related Certifications
6.8
Safety-Limiting Values
6.9
Electrical Characteristics
6.10
Switching Characteristics
6.11
Insulation Characteristics Curves
6.12
Typical Characteristics
7
Parameter Measurement Information
7.1
Propagation Delay and Pulse Width Distortion
7.2
Rising and Falling Time
7.3
PWM Input and Disable Response Time
7.4
Programable Dead Time
7.5
CMTI Testing
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VDD, VCCI, and Under Voltage Lock Out (UVLO)
8.3.2
Input and Output Logic Table
8.3.3
Input Stage
8.3.4
Output Stage
8.3.5
Diode Structure in UCC20520
8.4
Device Functional Modes
8.4.1
Disable Pin
8.4.2
Programmable Dead Time (DT) Pin
8.4.2.1
Tying the DT Pin to VCC
8.4.2.2
DT Pin Left Open or Connected to a Programming Resistor between DT and GND Pins
8.4.2.3
39
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
Designing PWM Input Filter
9.2.2.2
Select External Bootstrap Diode and its Series Resistor
9.2.2.3
Gate Driver Output Resistor
9.2.2.4
Estimate Gate Driver Power Loss
9.2.2.5
Estimating Junction Temperature
9.2.2.6
Selecting VCCI, VDDA/B Capacitor
9.2.2.6.1
Selecting a VCCI Capacitor
9.2.2.6.2
Selecting a VDDA (Bootstrap) Capacitor
9.2.2.6.3
Select a VDDB Capacitor
9.2.2.7
Dead Time Setting Guidelines
9.2.2.8
Application Circuits with Output Stage Negative Bias
9.2.2.9
56
9.2.3
Application Curves
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.3.1
Certifications
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
IMPORTANT NOTICE
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DATA SHEET
UCC20520 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Single Input
1
Features
Single input, dual output
Operating temperature range: –40 to 125°C
Switching parameters:
19-ns typical propagation delay
10-ns minimum pulse width
5-ns maximum delay matching
6-ns maximum pulse-width distortion
Common-mode transient immunity (CMTI) greater than 100-V/ns
Surge immunity up to 12.8-kV
Isolation barrier life >40 Years
4-A peak source, 6-A peak sink output
TTL and CMOS compatible inputs
3-V to 18-V input VCCI range to interface with both digital and analog controllers
Up to 25-V VDD output drive supply
Programmable dead time
Rejects input pulses and noise transients shorter than 5-ns
Fast disable for power sequencing
Industry standard wide body SOIC-16 (DW) package
Safety-related and regulatory approvals:
8000-V
PK
isolation per DIN V VDE V 0884-11:2017-01
5700-V
RMS
isolation for 1 minute per UL 1577
CSA certification per IEC 60950-1, IEC 62368-1, IEC 61010-1 and IEC 60601-1 end equipment standards
CQC certification per GB4943.1-2011
2
Applications
Isolated converters in offline AC-to-DC power supplies
Server, telecom, IT and industrial infrastructures
Motor drive and DC-to-AC solar inverters
LED lighting
Inductive heating
Uninterruptible power supply (UPS)
HEV and BEV battery chargers