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UCC21521 Datasheet Preview

UCC21521 Datasheet

Dual-Channel Gate Driver

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UCC21521
SLUSCO3 – OCTOBER 2016
UCC21521 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Enable
1 Features
1 Universal: Dual Low-Side, Dual High-Side or Half-
Bridge Driver
• Operating Temperature Range –40 to +125°C
• Switching Parameters:
– 19-ns Typical Propagation Delay
– 10-ns Minimum Pulse Width
– 5-ns Maximum Delay Matching
– 5-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
– 5-V, 8-V, 12-V VDD UVLO Options
• Programmable Overlap and Dead Time
• Rejects Input Pulses and Noise Transients
Shorter than 5 ns
• Fast Enable for Power Sequencing
• Wide Body SOIC-16 (DW) Package
• Safety-Related and Regulatory Approvals:
– 8000-VPK Isolation per DIN V VDE V 0884-10
(VDE V0884-10):2006-12
– 5700-VRMS Isolation for 1 Minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 60601-1 End Equipment
Standards (Planned)
– CQC Certification per GB4943.1-2011
(Planned)
3 Description
The UCC21521 is an isolated dual-channel gate
driver with 4-A source and 6-A sink peak current. It is
designed to drive power MOSFETs, IGBTs, and SiC
MOSFETs up to 5-MHz with best-in-class
propagation delay and pulse-width distortion.
The input side is isolated from the two output drivers
by a 5.7-kVRMS reinforced isolation barrier, with a
minimum of 100-V/ns common-mode transient
immunity (CMTI). Internal functional isolation between
the two secondary-side drivers allows a working
voltage of up to 1500 VDC.
This driver can be configured as two low-side drivers,
two high-side drivers, or a half-bridge driver with
programmable dead time (DT). The EN pin pulled low
shuts down both outputs simultaneously and allows
for normal operation when left open or pulled high. As
a fail-safe measure, primary-side logic failures force
both outputs low.
The device accepts VDD supply voltages up to 25 V.
A wide input VCCI range from 3 V to 18 V makes the
driver suitable for interfacing with both analog and
digital controllers. All the supply voltage pins have
under voltage lock-out (UVLO) protection.
With all these advanced features, the UCC21521
enables high efficiency, high power density, and
robustness in a wide variety of power applications.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
UCC21521ADW DW SOIC (16) 10.30 mm × 7.50 mm
UCC21521DW DW SOIC (16) 10.30 mm × 7.50 mm
UCC21521CDW DW SOIC (16) 10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Block Diagram
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
VCCI 3,8
INA 1
EN 5
NC 7
DT 6
INB 2
GND 4
MOD
EN,
UVLO
and
Deadtime
MOD
Driver
DEMOD UVLO
16 VDDA
15 OUTA
14 VSSA
Functional Isolation
13 NC
12 NC
Driver
DEMOD UVLO
11 VDDB
10 OUTB
9 VSSB
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

UCC21521 Datasheet Preview

UCC21521 Datasheet

Dual-Channel Gate Driver

No Preview Available !

UCC21521
SLUSCO3 – OCTOBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Power Ratings........................................................... 5
6.6 Insulation Specifications............................................ 6
6.7 Safety-Related Certifications..................................... 7
6.8 Safety-Limiting Values .............................................. 7
6.9 Electrical Characteristics........................................... 8
6.10 Switching Characteristics ........................................ 9
6.11 Insulation Characteristics Curves ......................... 10
6.12 Typical Characteristics .......................................... 11
7 Parameter Measurement Information ................ 16
7.1 Propagation Delay and Pulse Width Distortion....... 16
7.2 Rising and Falling Time ......................................... 16
7.3 Input and Enable Response Time........................... 16
7.4 Programable Dead Time ........................................ 17
7.5 CMTI Testing........................................................... 17
8 Detailed Description ............................................ 18
8.1 Overview ................................................................. 18
8.2 Functional Block Diagram ....................................... 18
8.3 Feature Description................................................. 19
8.4 Device Functional Modes........................................ 23
9 Application and Implementation ........................ 25
9.1 Application Information............................................ 25
9.2 Typical Application .................................................. 25
10 Power Supply Recommendations ..................... 36
11 Layout................................................................... 37
11.1 Layout Guidelines ................................................. 37
11.2 Layout Example .................................................... 38
12 Device and Documentation Support ................. 40
12.1 Documentation Support ....................................... 40
12.2 Certifications ......................................................... 40
12.3 Receiving Notification of Documentation Updates 40
12.4 Community Resources.......................................... 40
12.5 Trademarks ........................................................... 40
12.6 Electrostatic Discharge Caution ............................ 40
12.7 Glossary ................................................................ 40
13 Mechanical, Packaging, and Orderable
Information ........................................................... 40
4 Revision History
DATE
October 2016
REVISION
*
NOTES
Initial Release
2 Submit Documentation Feedback
Product Folder Links: UCC21521
Copyright © 2016, Texas Instruments Incorporated


Part Number UCC21521
Description Dual-Channel Gate Driver
Maker etcTI
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