Isolators

ISO5451DW

LTB

5.7KVRMS, 2.5A/5A SINGLE-CHANNEL ISOLATED GATE DRIVER WITH ACTIVE PROTECTION FEATURES

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DocumentsCircuit Board Insulation Design According to IEC60664 for Motor Drive Apps TUV Certificate for Isolation Devices (Rev. K)+12

Isolators

ISO5451DW

LTB

Texas Instruments

5.7KVRMS, 2.5A/5A SINGLE-CHANNEL ISOLATED GATE DRIVER WITH ACTIVE PROTECTION FEATURES

Deep-Dive with AI

DocumentsCircuit Board Insulation Design According to IEC60664 for Motor Drive Apps TUV Certificate for Isolation Devices (Rev. K)+12

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	ISO5451DW

Approval Agency	CQC, CSA, VDE, UR
Common Mode Transient Immunity (Min) [Min]	50 kV/çs
Current - Output High, Low	1.5 A, 3.4 A
Current - Peak Output	2.7 A, 5.5 A
Mounting Type	Surface Mount
Number of Channels	1
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
Rise / Fall Time (Typ) [custom]	20 ns
Rise / Fall Time (Typ) [custom]	20 ns
Supplier Device Package	16-SOIC
Technology	Capacitive Coupling
Voltage - Isolation	5700 Vrms
Voltage - Output Supply [Max]	30 V
Voltage - Output Supply [Min]	15 V

ISO5451-Q1 Series

Automotive 5.7kVrms, 2.5A/5A single-channel isolated gate driver with active protection features

Part	Current - Peak Output	Common Mode Transient Immunity (Min) [Min]	Current - Output High, Low	Operating Temperature [Max]	Operating Temperature [Min]	Number of Channels	Package / Case [x]	Package / Case	Package / Case [y]	Supplier Device Package	Voltage - Isolation	Technology	Voltage - Output Supply [Min]	Voltage - Output Supply [Max]	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Approval Agency	Mounting Type	Qualification	Grade
Texas Instruments ISO5451DW	2.7 A 5.5 A	50 kV/çs	1.5 A 3.4 A	125 °C	-40 °C	1	0.295 in	16-SOIC	7.5 mm	16-SOIC	5700 Vrms	Capacitive Coupling	15 V	30 V	20 ns	20 ns	CQC CSA UR VDE	Surface Mount
Texas Instruments ISO5451QDWQ1	2.7 A 5.5 A	50 kV/çs	1.5 A 3.4 A	125 °C	-40 °C	1	0.295 in	16-SOIC	7.5 mm	16-SOIC	5700 Vrms	Capacitive Coupling	15 V	30 V	20 ns	20 ns	CQC CSA TUV UL VDE	Surface Mount	AEC-Q100	Automotive
Texas Instruments ISO5451DWR	2.7 A 5.5 A	50 kV/çs	1.5 A 3.4 A	125 °C	-40 °C	1	0.295 in	16-SOIC	7.5 mm	16-SOIC	5700 Vrms	Capacitive Coupling	15 V	30 V	20 ns	20 ns	CQC CSA UR VDE	Surface Mount

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	$ 5.25
		10	$ 4.71
		40	$ 4.45
		120	$ 3.86
Newark	Each	1	$ 6.52
		10	$ 6.13
		25	$ 5.80
		80	$ 5.54
		120	$ 5.31
		280	$ 5.05
		520	$ 4.96
Texas Instruments	TUBE	1	$ 4.38
		100	$ 3.84
		250	$ 2.69
		1000	$ 2.17

Description

General part information

ISO5451-Q1 Series

The ISO5451 is a 5.7-kV RMS, reinforced isolated gate driver for IGBTs and MOSFETs with 2.5-A source and 5-A sink current. The input side operates from a single 3-V to 5.5-V supply. The output side allows for a supply range from minimum 15 V to maximum 30 V. Two complementary CMOS inputs control the output state of the gate driver. The short propagation time of 76 ns assures accurate control of the output stage.

An internal desaturation (DESAT) fault detection recognizes when the IGBT is in an overload condition. Upon a DESAT detect, the gate driver output is driven low to V EE2 potential, turning the IGBT immediately off.

When desaturation is active, a fault signal is sent across the isolation barrier, pulling the FLT output at the input side low and blocking the isolator input. The FLT output condition is latched and can be reset through a low-active pulse at the RST input.