ISO7741FDW datasheet(10/52 Pages) TI

10 / 52 page

ISO7740, ISO7741, ISO7742

SLLSEP4G – MARCH 2016 – REVISED FEBRUARY 2020

www.ti.com

Product Folder Links: ISO7740 ISO7741 ISO7742

Submit Documentation Feedback

(1)

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

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

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

(2)

This coupler is suitable for safe electrical insulation (ISO774x) and basic electrical insulation (ISO7741B) 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 tied together creating a two-terminal device.

7.6 Insulation Specifications

PARAMETER

TEST CONDITIONS

VALUE

UNIT

DW-16

DBQ-

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)

>21

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 VDE V 0884-11:2017-01(2)

VIORM

Maximum repetitive peak

isolation voltage

AC voltage (bipolar)

ISO774x

2121

566

VPK

ISO7741B

1414

n/a

VIOWM

Maximum working isolation

voltage

AC voltage; Time dependent dielectric breakdown (TDDB)

Test; see Figure 28

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 × VIOTM, t= 1 s (100% production)

8000

4242

VPK

VIOSM

Maximum surge isolation

voltage(3)

Test method per IEC 62368-1, 1.2/50 µs waveform

VTEST = 1.6 × VIOSM

(ISO774x)

8000

4000

VPK

VTEST = 1.3 × VIOSM

(ISO7741B)

6000

n/a

qpd

Apparent charge(4)

Method a, After Input/Output safety test subgroup 2/3,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.2 × VIORM, tm = 10 s

≤5

Method a, After environmental tests subgroup 1,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.6 × VIORM,

tm = 10 s (ISO774x)

≤5

Vpd(m) = 1.2 × VIORM,

tm = 10 s (ISO7741B)

Method b1; At routine test (100% production) and

preconditioning (type test)

Vini = 1.2 × VIOTM, tini = 1 s;

Vpd(m) = 1.875 × VIORM,

tm = 1 s (ISO774x)

≤5

Vpd(m) = 1.5 × VIORM,

tm = 1 s (ISO7741B)

CIO

Barrier capacitance, input to

output(5)

VIO = 0.4 × sin (2πft), f = 1 MHz

RIO

Isolation resistance(5)

VIO = 500 V, TA = 25°C

>1012

Ω

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

VISO

Maximum withstanding isolation

voltage

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

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

5000

3000

VRMS

ISO7741FDW 数据表(PDF) 10 Page - Texas Instruments

ISO7741FDW 数据表(HTML) 10 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

数据表下载

链接网址

ISO7741FDW 数据表(PDF) 10 Page - Texas Instruments

ISO7741FDW 数据表(HTML) 10 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

数据表 下载

链接网址

数据表下载