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UCC28230DRNR Datasheet(PDF) 6 Page - Texas Instruments |
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UCC28230DRNR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 46 page  UCC28230 UCC28231 SLUS814A – FEBRUARY 2008 – REVISED JUNE 2008 ................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) VDD = 12V, 1-µF capacitor from VDD and VREF to GND, TA = TJ = –55°C to 125°C, RT = 49.9 kΩ connected to 4.4V supply to set Fsw = 100 kHz (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Current Sense, Cycle-by-Cycle Current Limit With Hiccup, Short Circuit Protection With Latch Off VCS_LIM CS pin cycle-by-cycle threshold 0.48 0.5 0.515 V Input pulse at CS from 0.3 V to 0.6 V with TCS CS to O1_D and O2_D propagation delay 100 0.03 V/ns slew rate ns Input pulse at CS from 0.3 V to 0.6 V with TBL Leading edge blanking time by internal filter 50 0.03 V/ns slew rate Discharge current to set cycle-by-cycle current limit duration IDS CS = 0.6 V, VSS = 4 V 15 20 25 µA (Figure 41) Hiccup OFF time threshold 3.1 3.4 3.7 V Discharge current to set Hiccup Mode OFF Time IHCC 1.9 2.5 3.1 µA (Figure 41, Figure 44) VCS_SC CS pin short circuit protection threshold (Figure 44) 0.65 0.7 0.75 V Outputs O1_D, O2_D, O1_DIN, O2_DIN Sink/Source peak current(2) 0.2 A Rise time CLOAD = 100 pF 12 25 ns Fall time CLOAD = 100 pF 10 25 RSRC Output source resistance IOUT = 20 mA 10 20 35 Ω RSINK Output sink resistance IOUT = 20 mA 5 15 30 Pins 7 and 9 pulses matching at FSW = 100 Duty cycle matching 35 ns kHz Thermal Shutdown Rising threshold(3) 150 160 170 Falling threshold(3) 130 140 150 °C Hysteresis 20 (2) Output sink/source peak current value, defined by equation IP = 100 pF × dV/dt where dV/dt is taken from the output rise and fall switching waveforms. It is not tested in production. Characterization is available upon request. (3) Thermal shutdown is not tested in production. Characterization is available upon request 6 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): UCC28230 UCC28231 |
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