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TPS544C20 Datasheet(PDF) 10 Page - Texas Instruments |
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TPS544C20 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 74 page TPS544B20, TPS544C20 SLUSB69 – MAY 2014 www.ti.com 7.6 Switching Characteristics VIN = VDD = 12 V, TA = 25 ºC, RRT = 38.3 kΩ (unless otherwise specified). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TON GENERATOR AND SW TIMING Adjustment range 250 1000 RRT = 10.0 kΩ 210 250 290 RRT = 17.8 kΩ 250 300 350 RRT = 27.4 kΩ 340 400 460 fSW Switching frequency(1) RRT = 38.3 kΩ 425 500 575 kHz RRT = 56.2 kΩ 550 650 750 RRT = 86.6 kΩ 640 750 860 RRT = 133 kΩ 720 850 980 RRT = 205 kΩ 850 1000 1150 IRT RT output current 9.75 µA tOFF(min) Minimum off-time(2) (3) 175 ns tON(min) Minimum controllable pulse width(2) 80 ns VDCAP2 D-CAP2 mode threshold 2.10 V VDCAP D-CAP mode threshold 0.8 V IMODE MODE output current 7 13 µA SW rising 15 tDEAD Power stage driver dead-time(2) ns SW falling 15 SW rising (10% to 90%), IOUT = 30 9.2 A, RBOOT= 0 Ω tSLEW(SW) SW slew rate(2) V/ns SW falling (90% to 10%), IOUT = 30 6.2 A, RBOOT= 0 Ω (1) On-times are production tested, but steady-state switching frequency is not. (2) Specified by design. Not production tested. (3) Minimum off time for valid current sensing is 400-ns typical, 500-ns maximum. 10 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated |
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