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L9300 Datasheet(PDF) 70 Page - STMicroelectronics |
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L9300 Datasheet(HTML) 70 Page - STMicroelectronics |
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70 / 182 page  PUMP_PWM_Duty_Cycle Duty cycle … … 127 99,219 % 128 100 % … … 255 100 % The pump pre–driver has a VDS monitoring that is used to protect the external FET in case of short circuit to ground. Through PUMP_VDS_PGM1 and PUMP_VDS_PGM2 SPI configuration bits four different VDS thresholds are programmable. In case of short circuit detection the pump pre-driver is switched off, a dedicated diagnostic bit is set and, if programmed, the GPO is triggered. The fault configuration is latched and it is cleared on SPI read, once the fault is cleared the pump pre-driver is automatically turned on keeping duty cycle and frequency information. Figure 40. Pump motor concept GADG0308171621PS 10.3.2 Pump pre-driver electrical characteristics 5.5V ≤ VBATP ≤ 19V; 5.5V ≤ PD1D ≤ 19V; -40°C ≤ Tj ≤ 175°C unless otherwise noticed. All voltages refer to GND pin. Table 42. Pump pre-driver electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Pin Pump Pre-driver PWM frequency Application note 0.5 19 kHz Ext. N-ch gate charge Application note 30 nC L9300 Pump pre-driver DS12258 - Rev 4 page 70/182 |
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