ISO7740FDBQR datasheet(9/52 Pages) TI2

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5.6 Insulation Specifications

PARAMETER

TEST CONDITIONS

VALUE

UNIT

DW-16 DBQ-16

CLR

External clearance(1)

Shortest terminal-to-terminal distance through air

>3.7

CPG

External creepage(1)

Shortest terminal-to-terminal distance across the package surface

>3.7

DTI

Distance through the

insulation

Minimum internal gap (internal clearance)

>17

μm

CTI

Comparative tracking index DIN EN 60112 (VDE 0303-11); IEC 60112

>600

Material group

According to IEC 60664-1

Overvoltage category per

IEC 60664-1

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)

ISO774x

2121

566

VPK

ISO7741B

1414

n/a

VPK

VIOWM

Maximum working isolation

voltage

AC voltage; Time dependent dielectric breakdown

(TDDB) Test; See Figure 8-7

ISO774x

1500

400

VRMS

ISO7741B

1000

n/a

DC voltage

ISO774x

2121

566

VDC

ISO7741B

1414

n/a

VIOTM

Maximum transient isolation

voltage

VTEST = VIOTM,

t = 60 s (qualification);

VTEST = 1.2 x 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

ISO774x

8000

5000

VPK

ISO7741B

6000

n/a

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

ISO774x

12800 10000

VPK

ISO7741B

7800

n/a

qpd

Apparent charge(5)

Method a, After Input-output safety test subgroup 2/3,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.2 x VIORM, tm = 10 s

≤5

Method a, After environmental tests subgroup 1,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.6 x VIORM,

tm = 10 s (ISO774x)

≤5

Vpd(m) = 1.3 x VIORM,

tm = 10 s (ISO7741B)

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 (ISO774x) or Vpd(m) = 1.5 x VIORM (ISO7741B),

tm = 1 s (method b1) or

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

≤5

CIO

Barrier capacitance, input to

output(6)

VIO = 0.4 x sin (2πft), f = 1 MHz

≅1

RIO

Isolation resistance(6)

VIO = 500 V, TA = 25°C

>1012

VIO = 500 V, 100°C ≤ TA ≤ 125°C

>1011

VIO = 500 V at TS = 150°C

>109

Pollution degree

Climatic category

55/125/

UL 1577

www.ti.com

ISO7740, ISO7741, ISO7742

SLLSEP4J – MARCH 2016 – REVISED OCTOBER 2024

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