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TPIC2603DWG4 Datasheet(PDF) 9 Page - Texas Instruments |
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TPIC2603DWG4 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 19 page TPIC2603 6CHANNEL SERIAL INTERFACE LOW SIDE DRIVER SLIS056A − FEBRUARY 1995 − REVISED MARCH 1996 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 PRINCIPLES OF OPERATION fault sense/protection circuitry over-current/short-to-battery sensing and protection The internal fault protection circuitry of the TPIC2603 monitors the drain current for each channel. Each channel offers two levels of protection from over-current conditions. The first level is a current-limit protection which through the internal FET prevents the switching current from exceeding the on-state current limit. The second level of protection transits the output to a low duty cycle PWM mode when the current exceeds the over-current sense threshold. The PWM mode protection is enabled approximately 70 µs after the output has been turned on. The output remains in the PWM mode until the shorted-load condition has been corrected and then automatically returns to normal operation. Figure 5 illustrates device operation under an over-current or shorted-load condition. t(stb) t(stb) Glitches Glitches tw(sense) tcyc(ref) DRAIN Control Register DRAIN Fault Register NORMAL SHORTED-LOAD Control Register DRAIN Fault Register Figure 5. Shorted-Load Condition |
Similar Part No. - TPIC2603DWG4 |
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Similar Description - TPIC2603DWG4 |
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