FAN1100-F085 ON Semiconductor

FAN1100-F085- Ignition Gate Driver IC FAN1100-F085 Ignition Gate Driver IC Description Features The FAN1100-F085 is designed to directly drive an Signal Line Input Buffer ignition IGBT and control the current and spark event of Input spike filter the coil. The coil current is controlled via the input pin. When the input is driven high, the output of the Operation from Ignition or Battery line FAN1100-F085 is enabled to turn on the IGBT and start Ground shift tolerance +/- 1.5 V charging the coil. The FAN1100-F085 will sink a current (IIN) into the input pin based on programmed current on Programmable maximum dwell time the RA line. Programmable Input Pull down current Control IGBT current limiting through Vsense pin An input spike filter suppresses input signals of less then 13 sec in duration. A Max Dwell timer is included Soft Shutdown following Max Dwell Time out in the FAN1100-F085 which will turn off the IGBT if the input stays active for longer than the programmed time. This time interval can be modified through an external capacitor on the CSSD pin. When the Max Dwell timer Applications is exceeded, the FAN1100-F085 will enter a Soft-Shut- The FAN1100-F085 is an advanced Ignition IGBT Down mode (SSD) slowly dropping the collector current control IC available in a SO8 package or die sales. by lowering the gate drive to the IGBT thereby This full featured Smart Ignition IGBT Driver is discharging the coil such as to inhibit a spark event. particularly advantageous in switch on coil Once the soft shutdown operation has started, any applications where size and system performance of transitions on the input signal are ignored until after the ignition driver are important. completion of the soft shutdown function. The FAN1100- F085 will also limit the collector current of the IGBT to Ic(lim) during charging. This again is done through the sense resistor in the emitter leg of the Ignition IGBT developing a signal input to the Vsense pin of the FAN1100-F085. Ordering Information Operating Part Number Package Packing Method Temperature Range FAN1100-F085 -40C to 150C 8-SOIC Tape & Reel 2014 Semiconductor Components Industries, LLC. 1 Publication Order Number: Aug-2018, Rev. 3 FAN1100-F085/D FAN1100- F085 - Ignition Gate Driver IC Recommended External Components Table 1. Recommended External Components Component Description Vendor Parameter Typ. Unit 200 Limits transient currents RBAT R to during load dump 300 Battery or Ignition voltage C C 0.47 F BAT! filtering C Battery noise transients C 10 nF BAT C Noise immunity C 10 nF IN R Sense the collector current R 20 SENSE m Typical Application Vbatt Rbat Ignition Cbat Cbat1 Coil Vbat RB OUTPUT IN ECU FAN XXXX Vsense Rin Cin RA CSSD GND Rsense RA CSSD Figure 1. Typical Application www.onsemi.com 2