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UCC28704DBVT-1 Datasheet(PDF) 6 Page - Texas Instruments |
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UCC28704DBVT-1 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 44 page 6 UCC28704 SLUSCA8A – FEBRUARY 2016 – REVISED FEBRUARY 2016 www.ti.com Product Folder Links: UCC28704 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Electrical Characteristics (continued) Over operating free-air temperature range, VVDD = 25 V, RNTC = open, –40°C ≤ TA ≤ 125°C, TJ = TA (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (3) These frequency limits represent average levels. This device automatically varies the switching frequency to improve EMI performance. (4) Not tested in production. DRV IDRS DRV source current VDRV = 5 V, VVDD = 9 V 25 32 38 mA RDRVLS DRV low-side drive resistance IDRV = 10 mA 6.5 12 Ω VDRCL DRV clamp voltage VVDD = 35 V 9.5 10.6 13 V RDRVSS DRV pull-down in start state 165 205 250 k Ω TIMING fSW(max) Maximum switching frequency (3) VVS = 3.7 V 78 85 94 kHz fSW(min) Minimum switching frequency VVS = 4.6 V 0.88 1.03 1.18 kHz tZTO Zero-crossing timeout delay 1.7 2.39 3 µs tCCUV_BLAN K Blanking delay time before CCUV shutdown VVS step from 3.5 V to 2.4 V to DRV stop switching 90 120 150 ms PROTECTION KOVP Over-voltage threshold ratio to VVSR VOVP/VVSR 1.13 1.15 1.18 V/V VCCUV CCUV VO = 3.0 V TJ = 25℃, auto restart after fault 2.41 2.48 2.55 V VOCP Over-current threshold At CS input 1.35 1.51 1.6 V IVSL(run) VS line-sense run current Current out of VS pin – increasing 190 220 265 µA IVSL(stop) VS line-sense stop current Current out of VS pin – decreasing 70 80 100 µA KVSL VS line-sense ratio IVSL(run) / IVSL(stop) 2.55 2.8 2.95 A/A TJ(stop) Thermal shut-down temperature (4) Internal junction temperature 150 °C CABLE COMPENSATION VCVS(max) Maximum compensation at VS Change in VS regulating level at full- load 180 220 260 mV NTC INPUT VNTCTH NTC shut-down threshold VDD UVLO cycle when below this threshold 0.9 0.95 1 V INTC NTC pull-up current, out of pin VNTC = 1.1 V 90 100 120 µA |
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Similar Description - UCC28704DBVT-1 |
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