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UCC25630-2DDBT Datasheet(PDF) 6 Page - Texas Instruments |
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UCC25630-2DDBT Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 66 page  6 UCC256302 SLUSD69 – NOVEMBER 2017 www.ti.com Product Folder Links: UCC256302 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Electrical Characteristics (continued) All voltages are with respect to GND, -40°C< TJ =TA < 125°C, VCC =15V, currents are positive into and negative out of the specified terminal, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (2) Not tested in production. Insured by design (3) IMismatch calculated as average of (IPD-(IPD+IPU)/(IPD+IPU)/2)) and (IPU-(IPD+IPU)/((IPD+IPU)/2) VBLKStop Input voltage that forces LLC operation to stop Voltage falling 2.13 2.17 2.23 V VBLKOVRise Input voltage that causes switching to stop Voltage rising 3.94 4.03 4.11 V VBLKOVFall Input voltage that causes switching to re-start Voltage falling 3.64 3.76 3.86 V FEEDBACK PIN RFBInternal Internal pull down resistor value 90.7 101.5 112.3 kΩ IFB FB internal current source 76.5 85.1 93.6 µA f-3dB Feedback chain -3dB cut off frequency (2) 1 MHz RESONANT CURRENT SENSE VISNS_OCP1 OCP1 threshold 3.97 4.03 4.07 V VISNS_OCP1_S S OCP1 threshold during soft start (1) 5 V VISNS_OCP2 OCP2 threshold 0.68 0.84 0.99 V VISNS_OCP3 OCP3 threshold 0.49 0.64 0.79 V TISNS_OCP2 The time the average input current needs to stay above OCP2 threshold before OCP2 is triggered (1) 2 ms TISNS_OCP3 The time the average input current needs to stay above OCP3 threshold before OCP3 is triggered (1) 50 ms VIpolarityHyst Resonant current polarity detection hysteresis 16.9 30.7 44.7 mV nOCP1 Number of OCP1 cycles before OCP1 fault is tripped (1) 4 RESONANT CAPACITOR VOLTAGE SENSE VCM Internal common mode voltage 2.91 3.02 3.14 V IRAMP Frequency compensation ramp current source value 1.63 1.84 2.10 mA IMismatch Pull up and pull down ramp current source mismatch (3) -1.25 1.25 % SOFT START ISSUp Current output from SS pin to charge up the soft start capacitor 21.8 25.8 29.8 µA RSSDown SS pin pull down resistance ZCS or OCP1 222 401 580 Ω GATE DRIVER VLOL LO output low voltage Isink = 20mA 0.027 0.052 0.087 V VRVCC - VLOH LO output high voltage Isource = 20mA 0.113 0.178 0.263 V VHOL - VHS HO output low voltage Isink = 20mA 0.027 0.053 0.087 V VHB - VHOH HO output high voltage Isource = 20mA 0.113 0.173 0.263 V VHB- HSUVLORise High side gate driver UVLO rise threshold 7.35 7.94 8.70 V VHB- HSUVLOFall High side gate driver UVLO fall threshold 6.65 7.25 7.76 V Isource_pk HO, LO peak source current (2) -0.6 A Isink_pk HO, LO peak sink current (2) 1.2 A BOOTSTRAP |
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