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TLE6282G Datasheet(PDF) 8 Page - Infineon Technologies AG |
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TLE6282G Datasheet(HTML) 8 Page - Infineon Technologies AG |
8 / 14 page Data Sheet TLE6282G 8 Rev 2.2 2006-03-07 Remarks: Default status of input pins: To assure a defined status of all input pins in case of disconnection, these pins are internally secured by pull up / pull down current sources with approx. 20µA. The following table shows the default status of each input pin. Input pin Default status ILx (active high) Low IHx (active low) High DT/DIS (active high) High Definition: In this datasheet a duty cycle of 98% means that the GLx pin is 2% of the PWM period in high condition. Functional description Description of Dead Time Pin / Disable Pin / Reset In the range between 1.5 and 3.5 V the dead time is varied from 100ns to 3.1µs typ. In the range below 1.0V the dead time is disabled / shoot through is allowed. Both external Mosfets of the same half bridge can be switched on simultaneously. This function allows the use of a half bridge for valves and injectors. In the range above 4.0V the device is disabled. If DIS is pulled up to 5V for 3.1 to 3.4µs only the ERR register is cleared (reset), no output stage is shut down. A shut down of all external Mosfets occurs if DIS is pulled up for longer than 7µs. Condition of DT/DIS pin Function 0 - 1V Disable of dead time; Shoot through is allowed 1.5 - 3.5V Adjust dead time between 100ns and 3.1µs typ. a) Reset of diagnosis register if DT/DIS voltage is higher than 4V for a time between 3.1µs and 3.4µs > 4V b) Shut down of output stages if DT/DIS voltage is higher than 4V for a time above 7µs (Active pull down of gate volt- age) Description of Diagnosis The ERR pin is an open collector output and has to be pulled up with external pull up resis- tors to 5V. In normal conditions the ERR signal is high. In case of shutdown of any output stage the ERR is pulled down. This shut down can be caused by undervoltage or short cir- cuit. Recommended Start-up procedure The following procedure is recommended whenever the Driver IC is powered up: • Disable the Driver IC via DT/DIS pin • After the supply voltage has ramped up, wait for several ms to pre-charge the boot- strap capacitors of the High Side MOSFETs CBx through the resistors R on the DLx |
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