UCC20520 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Single Input | TI.com


4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Single Input



The UCC20520 is an isolated single input, 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 used for half-bridge driver with programmable dead time (DT). A disable pin shuts down both outputs simultaneously when it is set high, and allows normal operation when left open or grounded. 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 UCC20520 enables high efficiency, high power density, and robustness in a wide variety of power applications.


  • 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
    • 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
  • 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-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

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Parametrics Compare all products in Isolated gate drivers

Isolation rating (Vrms)
DIN V VDE V 0884-10 transient overvoltage rating (Vpk)
DIN V VDE V 0884-10 working voltage (Vpk)
Number of channels (#)
Power switch
Enable/disable function
Output VCC/VDD (Max) (V)
Output VCC/VDD (Min) (V)
Input VCC (Min) (V)
Input VCC (Max) (V)
Peak output current (A)
Prop delay (ns)
Operating temperature range (C)
Package Group
UCC20520 UCC21520 UCC21521 UCC21540 UCC21541
5700     5700     5700     5000     5000    
8000     8000     8000     7070     7070    
2121     2121     2121     1414     1414    
2     2     2     2     2    
Disable     Disable     Enable     Disable     Disable    
25     25     25     18     18    
9.2     9.2     9.2     9.2     9.2    
3     3     3     3     3    
18     18     18     5.5     5.5    
6     6     6     6     2.5    
19     19     19     28     28    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
SOIC | 16     SOIC | 16     SOIC | 16     SOIC | 14
SOIC | 16    
SOIC | 16