5.6 Insulation Specifications

PARAMETER

TEST CONDITIONS

VALUE

UNIT

DW-16

D-8

IEC 60664-1

CLR

External clearance(1)

Shortest terminal-to-terminal distance through air

8

4

mm

CPG

External creepage(1)

Shortest terminal-to-terminal distance across the package surface

8

4

mm

DTI

Distance through the insulation

Minimum internal gap (internal clearance)

17

17

µm

CTI

Comparative tracking index

DIN EN 60112 (VDE 0303-11); IEC 60112; UL 746A

>600 >600

V

Material Group

According to IEC 60664-1

I

I

Overvoltage category per IEC

60664-1

Rated mains voltage ≤ 150 VRMS

I–IV

I-IV

Rated mains voltage ≤ 300 VRMS

I–IV

I-III

Rated mains voltage ≤ 600 VRMS

I–IV

n/a

Rated mains voltage ≤ 1000 VRMS

I-III

n/a

DIN EN IEC 60747-17 (VDE 0884-17)(2)

VIORM

Maximum repetitive peak

isolation voltage

AC voltage (bipolar)

2121 637

VPK

VIOWM

Maximum working isolation

voltage

AC voltage; time-dependent dielectric breakdown (TDDB) test, see

Section 8.2.3.1

1500 450

VRMS

DC voltage

2121 637

VDC

VIOTM

Maximum transient isolation

voltage

VTEST = VIOTM , t = 60 s (qualification);

VTEST = 1.2 × VIOTM, t = 1 s (100% production)

8000 4242

VPK

VIMP

Maximum impulse voltage(3)

Tested in air, 1.2/50-μs waveform per IEC 62368-1

8000 5000

VPK

VIOSM

Maximum surge isolation

voltage(4)

VIOSM ≥ 1.3 x VIMP; Tested in oil (qualification test),

1.2/50-µs waveform per IEC 62368-1

12800 10000

VPK

qpd

Apparent charge(5)

Method a: After I/O safety test subgroup 2/3,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.2 × VIORM, tm = 10 s

≤ 5

≤ 5

pC

Method a: After environmental tests subgroup 1,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.6 × VIORM, tm = 10 s

≤ 5

≤ 5

Method b: At routine test (100% production) and preconditioning

(type test);

Vini = 1.2 x VIOTM, tini = 1 s;

Vpd(m) = 1.875 x VIORM (ISO7710), tm = 1 s (method b1) or

Vpd(m) = Vini, tm = tini (method b2)

≤ 5

≤ 5

CIO

Barrier capacitance, input to

output(6)

VIO = 0.4 × sin (2 πft), f = 1 MHz

≅0.4 ≅0.4

pF

RIO

Insulation resistance(6)

VIO = 500 V, TA = 25°C

> 1012 > 1012

Ω

VIO = 500 V, 100°C ≤ TA ≤ 125°C

> 1011 > 1011

VIO = 500 V at TS = 150°C

> 109 > 109

Pollution degree

2

2

Climatic category

55/125/

21

55/125/

21

UL 1577

VISO

Withstand isolation voltage

VTEST = VISO , t = 60 s (qualification);

VTEST = 1.2 × VISO, t = 1 s (100% production)

5000 3000

VRMS

(1)

Creepage and clearance requirements should be applied according to the specific equipment isolation standards of an application.

Care must be taken to maintain the creepage and clearance distance of a board design to verify that the mounting pads of the isolator

on the printed-circuit board do not reduce this distance. Creepage and clearance on a printed-circuit board become equal in certain

cases. Techniques such as inserting grooves, ribs, or both on a printed circuit board are used to help increase these specifications.

(2)

This coupler is designed for safe electrical insulation only within the safety ratings. Compliance with the safety ratings shall be ensured

by means of suitable protective circuits.

(3)

Testing is carried out in air to determine the surge immunity of the package

ISO7710

SLLSER9E – NOVEMBER 2016 – REVISED DECEMBER 2024

www.ti.com

8

Submit Document Feedback

Copyright © 2024 Texas Instruments Incorporated

Product Folder Links: ISO7710