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ISOW7842DWE Datasheet(PDF) 7 Page - Texas Instruments

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Part # ISOW7842DWE
Description  High-Performance, 5000-VRMS Reinforced Quad-Channel Digital Isolators With Integrated High-Efficiency, Low-Emissions DC-DC Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ISOW7842DWE Datasheet(HTML) 7 Page - Texas Instruments

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ISOW7840, ISOW7841, ISOW7842, ISOW7843, ISOW7844
www.ti.com
SLLSEY2 – MARCH 2017
Product Folder Links: ISOW7840 ISOW7841 ISOW7842 ISOW7843 ISOW7844
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Copyright © 2017, Texas Instruments Incorporated
(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, ribs, or both on a printed circuit board 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 tied together creating a two-terminal device.
7.6 Insulation Specifications
PARAMETER
TEST CONDITIONS
VALUE
UNIT
GENERAL
CLR
External clearance(1)
Shortest terminal-to-terminal distance through air
>8
mm
CPG
External creepage(1)
Shortest terminal-to-terminal distance across the
package surface
>8
mm
DTI
Distance through the insulation
Minimum internal gap (internal clearance – capacitive
signal isolation)
> 21
µm
Minimum internal gap (internal clearance –
transformer power isolation)
>120
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
≤ 300 VRMS
I-IV
Rated mains voltage
≤ 600 VRMS
I-IV
Rated mains voltage
≤ 1000 VRMS
I-III
DIN V VDE 0884-10 (VDE V 0884-10): 2016-12(2)
VIORM
Maximum repetitive peak isolation
voltage
AC voltage (bipolar)
1414
VPK
VIOWM
Maximum isolation working voltage
AC voltage; Time dependent dielectric breakdown
(TDDB) Test
1000
VRMS
DC voltage
1414
VDC
VIOTM
Maximum transient isolation voltage
VTEST = VIOTM; t = 60 s (qualification);
VTEST = 1.2 × VIOTM; t = 1 s (100% production)
7071
VPK
VIOSM
Maximum surge isolation voltage(3)
Test method per IEC 60065, 1.2/50 µs waveform,
VTEST = 1.6 × VIOSM (qualification)
6250
VPK
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
pC
Method a, after environmental tests subgroup 1,
Vini = VIOTM, tini = 60 s; Vpd(m) = 1.6 × VIORM, tm = 10 s
≤ 5
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
≤ 5
CIO
Barrier capacitance, input to output(5)
VIO = 0.4 × sin (2πft), f = 1 MHz
~3.5
pF
RIO
Insulation resistance(5)
VIO = 500 V, TA = 25°C
> 1012
Ω
VIO = 500 V, 100°C ≤ TA ≤ 125°C
> 1011
VIO = 500 V, TS = 150°C
> 109
Pollution degree
2
Climatic category
40/125/21
UL 1577
VISO(UL)
Withstand isolation voltage
VTEST = VISO(UL), t = 60 s (qualification),
VTEST = 1.2 × VISO(UL), t = 1 s (100% production)
5000
VRMS


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