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Copyright © 2017, Texas Instruments Incorporated

(1)

Apply creepage and clearance requirements 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 ensure that the mounting pads of the isolator on the printed

circuit board (PCB) do not reduce this distance. Creepage and clearance on a PCB become equal in certain cases. Techniques such as

inserting grooves and ribs on the PCB are used to help increase these specifications.

(2)

This coupler is suitable 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 or oil to determine the intrinsic surge immunity of the isolation barrier.

(4)

Apparent charge is electrical discharge caused by a partial discharge (pd).

(5)

All pins on each side of the barrier are tied together, creating a two-pin device.

7.6 Insulation Specifications

over operating ambient temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VALUE

UNIT

GENERAL

CLR

Shortest pin-to-pin distance through air

≥ 9

mm

CPG

Shortest pin-to-pin distance across the package surface

≥ 9

mm

DTI

Distance through insulation

Minimum internal gap (internal clearance) of the double insulation

(2 × 0.0105 mm)

≥ 0.021

mm

CTI

Comparative tracking index

DIN EN 60112 (VDE 0303-11); IEC 60112

≥ 600

V

Material group

According to IEC 60664-1

I

Overvoltage category

per IEC 60664-1

Rated mains voltage

I-IV

Rated mains voltage

I-IV

Rated mains voltage

I-III

Maximum repetitive peak

isolation voltage

At ac voltage (bipolar)

2121

Maximum-rated isolation

working voltage

At ac voltage (sine wave)

1500

At dc voltage

2121

Maximum transient isolation

voltage

7000

8400

Maximum surge isolation

Test method per IEC 60065, 1.2-μs, 50-μs waveform,

8000

Method a, after input/output safety test subgroup 2 / 3,

≤ 5

pC

Method a, after environmental tests subgroup 1,

≤ 5

Method b1, at routine test (100% production) and type test,

≤ 5

Barrier capacitance,

~1

pF

Insulation resistance,

Ω

Ω

Ω

Pollution degree

2

Climatic category

40/125/21

UL1577

Withstand isolation voltage

5000