Isolators

UCC21521CDW

LTB

5.7KVRMS, 4A/6A DUAL-CHANNEL ISOLATED GATE DRIVER WITH DUAL INPUT, ENABLE, 8V UVLO & LGA PACK

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Search across all available documentation for this part.

DocumentsVDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. W)Using the UCC21520EVM-286, UCC21521CEVM-286, and UCC21530EVM286 User's Guide (Rev. C)+10

Isolators

UCC21521CDW

LTB

Texas Instruments

5.7KVRMS, 4A/6A DUAL-CHANNEL ISOLATED GATE DRIVER WITH DUAL INPUT, ENABLE, 8V UVLO & LGA PACK

Deep-Dive with AI

DocumentsVDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. W)Using the UCC21520EVM-286, UCC21521CEVM-286, and UCC21530EVM286 User's Guide (Rev. C)+10

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC21521CDW

Approval Agency	CQC, CSA, VDE, UR
Common Mode Transient Immunity (Min) [Min]	100 V/ns
Current - Output High, Low	4 A, 6 A
Mounting Type	Surface Mount
Number of Channels [custom]	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-SOIC
Package / Case [x]	0.295 in
Package / Case [y]	7.5 mm
Propagation Delay tpLH / tpHL (Max) [Max]	30 ns
Pulse Width Distortion (Max) [Max]	6 ns
Rise / Fall Time (Typ) [custom]	7 ns
Rise / Fall Time (Typ) [custom]	6 ns
Supplier Device Package	16-SOIC
Technology	Capacitive Coupling
Voltage - Isolation	5700 Vrms
Voltage - Output Supply [Max]	25 V
Voltage - Output Supply [Min]	14.7 V

UCC21521 Series

5.7kVrms, 4A/6A dual-channel isolated gate driver with dual input, enable, 8V UVLO & LGA pack

Part	Approval Agency	Pulse Width Distortion (Max) [Max]	Propagation Delay tpLH / tpHL (Max) [Max]	Voltage - Output Supply [Max]	Voltage - Output Supply [Min]	Number of Channels [custom]	Package / Case [x]	Package / Case	Package / Case [y]	Mounting Type	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Common Mode Transient Immunity (Min) [Min]	Current - Output High, Low	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Technology	Voltage - Isolation	Type	Supplied Contents	Utilized IC / Part	Function
Texas Instruments UCC21521DW	CQC CSA UR VDE	6 ns	30 ns	25 V	9.2 V	2	0.295 in	16-SOIC	7.5 mm	Surface Mount	7 ns	6 ns	100 V/ns	4 A 6 A	125 °C	-40 °C	16-SOIC	Capacitive Coupling	5700 Vrms
Texas Instruments UCC21521CEVM-286																				Power Management	Board(s)	UCC21521	Gate Driver
Texas Instruments UCC21521CDWR		6 ns	30 ns	18 V	3 V	2	0.295 in	16-SOIC	7.5 mm	Surface Mount	7 ns	6 ns	100 V/ns	4 A 6 A	125 °C	-40 °C	16-SOIC	Capacitive Coupling	5700 Vrms
Texas Instruments UCC21521CDW	CQC CSA UR VDE	6 ns	30 ns	25 V	14.7 V	2	0.295 in	16-SOIC	7.5 mm	Surface Mount	7 ns	6 ns	100 V/ns	4 A 6 A	125 °C	-40 °C	16-SOIC	Capacitive Coupling	5700 Vrms

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 6.33
		10	$ 5.68
		40	$ 5.37
		120	$ 4.66
		280	$ 4.42
		520	$ 3.96
Texas Instruments	TUBE	1	$ 5.27
		100	$ 4.62
		250	$ 3.24
		1000	$ 2.61

Description

General part information

UCC21521 Series

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-kVRMSreinforced 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.

Every 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.