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TPIC2101D Datasheet(PDF) 8 Page - Texas Instruments |
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TPIC2101D Datasheet(HTML) 8 Page - Texas Instruments |
8 / 18 page TPIC2101 DC BRUSH MOTOR CONTROLLER SLIS060 – OCTOBER 1995 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 over/under voltage operating The TPIC2101 detects an over or under voltage condition (on the Vbat terminal) and turns off the gate drive circuit. The device remains in this condition until the supply voltage returns to normal operating voltage. Hysteresis assures that the over/under voltage condition does not toggle off and on near the threshold. The INT terminal pulls toward GND through an internal impedance of less than 500 Ω during the over-voltage condition or during sleep state. This ensures a slow ramp up of the GD terminal PWM when the Vbat voltage returns to the operating range. current limit operation An over-current condition is detected if the ILS terminal is higher than the ILR terminal while the gate drive (GD terminal) is high. This condition activates a closed-loop control, causing the INT terminal to be pulled low (through an internal resistance less than 500 Ω) lowering the commanded duty cycle to close the loop. current fault operation During a window of 8192 clock cycles, a latch is set if at least once during the window, a current limit condition is detected. If a current limit condition is set for eight consecutive 8192 clock cycle windows, the gate drive (GD terminal) will be shut off for a disable period of 65536 clock cycles. During the disable period, the INT terminal is pulled to GND through an internal resistance of less than 500 Ω. After the disable period is completed, an internal restart is attempted. If the current limit is present again, as described above, for 8 consecutive windows, the GD and INT terminals are again pulled to GND and the device remains in this current fault state until the device is cycled through a sleep state to run state. However, if the current limit condition is not present during any of the eight 8192 clock cycle windows, the latches for the 8 count window timer and the two cycle shutdown/restart are reset. See timing diagrams, Figures 6, 7, and 8. absolute maximum ratings over the operating free-air temperature range (unless otherwise noted)† Supply voltage range, Vbat‡ – 0.3 V to 40 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, MAN, AUTO – 0.3 V to 40 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, INT CCS, ILR – 0.3 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous gate drive output current, IGD ±50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous speed output current, IO(SPEED) ±1 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current, IO(V5P5), IO(AREF) 20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous ROSC output Current, IO(ROSC) 1 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current, IO(CCS) 500 µA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Resistance, junction to ambient, RΘJA: D package 131 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 78 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air termperature range, TA –40 °C to 105°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum junction temperature, TJM 150 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. ‡ Under load dump conditions, the voltage on Vbat can reach 40 V within 1 ms. |
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