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UCC21220 Datasheet(PDF) 6 Page - Texas Instruments |
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UCC21220 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 39 page 6 UCC21220 SLUSCK0 – NOVEMBER 2017 www.ti.com Product Folder Links: UCC21220 Submit Documentation Feedback 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 basic electrical insulation only within the maximum operating 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-pin device. 6.6 Insulation Specifications PARAMETER TEST CONDITIONS VALUE UNIT CLR External clearance(1) Shortest pin-to-pin distance through air > 4 mm CPG External creepage(1) Shortest pin-to-pin distance across the package surface > 4 mm DTI Distance through the insulation Minimum internal gap (internal clearance) >16 µm 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 ≤ 150 VRMS I-IV Rated mains voltage ≤ 300 VRMS I-IV Rated mains voltage ≤ 600 VRMS I-III DIN V VDE 0884-10 (VDE V 0884-10): 2006-2012(2) VIORM Maximum repetitive peak isolation voltage AC voltage (bipolar) 990 VPK VIOWM Maximum working isolation voltage AC voltage (sine wave); time dependent dielectric breakdown (TDDB) test; (See ) 700 VRMS DC Voltage 990 VDC VIOTM Maximum transient isolation voltage VTEST = VIOTM, t = 60 s (qualification); VTEST = 1.2 × VIOTM, t = 1 s (100% production) 4242 VPK VIOSM Maximum surge isolation voltage(3) Test method per IEC 62368-1, 1.2/50 μs waveform, VTEST = 1.3 × VIOSM = 7800 VPK (qualification) 6000 VPK qpd Apparent charge(4) Method a, After Input/Output safety test subgroup 2/3, Vini = VIOTM, tini = 60s; Vpd(m) = 1.2 × VIORM, tm = 10s <5 pC Method a, After environmental tests subgroup 1, Vini = VIOTM, tini = 60s; Vpd(m) = 1.2 × VIORM, tm = 10s <5 Method b1; At routine test (100% production) and preconditioning (type test) Vini = 1.2 × VIOTM; tini = 1 s; Vpd(m) = 1.5 × VIORM , tm = 1s <5 CIO Barrier capacitance, input to output(5) VIO = 0.4 sin (2πft), f =1 MHz 0.5 pF RIO Isolation resistance, input to output VIO = 500 V at TA = 25°C > 1012 Ω VIO = 500 V at 100°C ≤ TA ≤ 125°C > 1011 VIO = 500 V at TS =150°C > 109 Pollution degree 2 Climatic category 40/125/21 UL 1577 VISO Withstand isolation voltage VTEST = VISO = 3000 VRMS, t = 60 sec. (qualification), VTEST = 1.2 × VISO = 3600VRMS, t = 1 sec (100% production) 3000 VRMS |
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