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DRV8317 数据表(PDF) 59 Page - Texas Instruments |
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DRV8317 数据表(HTML) 59 Page - Texas Instruments |
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59 / 69 page  9.3 Alternate Applications The DRV8317 can be used to drive brushed-DC motors and solenoid loads. The following design procedure can be used to configure the DRV8317. nSLEEP CSAREF INHA INLA AVDD AGND VVM VM CP + OUTA OUTB OUTC CAVDD INHB INLB INHC INLC 0.1 µF 0.1 µF 10 µF MODE GAIN SLEW HW PWM Control Input nFAULT GP-I 5.1 k GP-O GP-O GP-O GP-O GP-O GP-O PWM Control Module PGND VCC 0.1 µF DRV8317H Microcontroller External Load Voltage Supervisor ADC VIN_AVDD AVDD + 0.1 µF 10 µF M Load VVM CPH CPL 47 nF Sleep Control SOC SOA SOB Current Sensing CSA ADC ADC ADC 330 330 330 22 pF 22 pF 22 pF Figure 9-6. Application Schematics (DRV8317H) - Brushed-DC and Solenoid Load Drive Block Diagram 6x PWM mode or 3x PWM mode can be used to drive brushed-DC and/or solenoid loads depending on the application. A Brushed-DC motor can be connected to two OUTx phases to create an integrated full H-bridge configuration to drive the motor in both direction. Solenoid loads can be connected from OUTx to VM or GND to use the DRV8317 as a push-pull driver in 6x PWM or 3x PWM mode. When the load is connected from OUTx to GND, the HS MOSFET sources current into the solenoid, and the LS MOSFET acts as a recirculation diode to recirculate current from the solenoid. When the load is connected from OUTx to VM, the LS MOSFET sink current from the solenoid to GND, and the HS MOSFET acts as a recirculation diode to recirculate current from the solenoid. www.ti.com DRV8317 SLVSGT3 – DECEMBER 2022 Copyright © 2022 Texas Instruments Incorporated Submit Document Feedback 59 Product Folder Links: DRV8317 |
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