ISO7421-EP

www.ti.com

SLLSEN3 – DECEMBER 2015

8.3 Feature Description

8.3.1 Insulation Characteristics

Over recommended operating conditions (unless otherwise noted)

PARAMETER(1)

TEST CONDITIONS

SPECIFICATION

UNIT

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

VIORM

Maximum working insulation voltage

566

VPK

VPR

Input-to-output test voltage

t = 1 s (100% production), partial discharge 5 pC

1062

VPK

t = 60 s (qualification)

VIOTM

Transient overvoltage

4242

VPK

t = 1 s (100% production)

RS

Insulation resistance

VIO = 500 V at TS

>109

Ω

Pollution degree

2

UL 1577

VTEST = VISO = 2500 VRMS, t = 60 s (qualification)

VISO

Isolation voltage per UL

2500

VRMS

VTEST = 1.2 x VISO = 3000 VRMS, t = 1 s (100%

production)

(1)

Climatic Classification 40/125/21

Table 1. IEC 60664-1 Ratings Table

PARAMETER

TEST CONDITIONS

SPECIFICATION

Material group

II

Rated mains voltage

≤ 150 VRMS

I–IV

Installation classification

Rated mains voltage

≤ 300 VRMS

I–III

8.3.2 Package Characteristics

Over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

L(I01)

Minimum air gap (clearance)

Shortest terminal-to-terminal distance through air

4

mm

Minimum external tracking

Shortest terminal-to-terminal distance across the

L(I02)

4

mm

(creepage)

package surface

Tracking resistance (comparative

CTI

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

>400

V

tracking index)

DTI

Distance through the insulation

Minimum internal gap (internal clearance)

0.014

mm

VIO = 500 V, TA = 25°C

>1012

Ω

Isolation resistance, input to

RIO

output(1)

VIO = 500 V, 100°C ≤ TA ≤ max

>1011

Ω

Barrier capacitance, input to

CIO

VIO = 0.4 sin (2πft), f = 1 MHz

1

pF

output(1)

CI

Input capacitance(2)

VI = VCC/2 + 0.4 sin (2πft), f = 1 MHz, VCC = 5 V

1

pF

(1)

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

(2)

Measured from input pin to ground.

Copyright © 2015, Texas Instruments Incorporated

Submit Documentation Feedback

11

Product Folder Links: ISO7421-EP