ZHCSJU7 May 2019 DRV8340-Q1
PRODUCTION DATA.
The DRV8340-Q1 device provides eight different PWM control modes in the SPI device and seven different modes in the H/W device to support various commutation and control methods. Texas Instruments does not recommend changing the MODE pin or PWM_MODE register during operation of the power MOSFETs. Set all INHx and INLx pins to logic low before making a MODE pin or PWM_MODE register change. Table 3 shows the different mode settings for the SPI device. The MODE bit setting of 100b is not available in the H/W device.
| H/W DEVICE | SPI DEVICE | MODE SETTINGS |
|---|---|---|
| Tied to AGND | 000b | 6x PWM |
| 18 kΩ to AGND | 001b | 3x PWM |
| 75 kΩ to AGND | 010b | 1x PWM |
| Hi-Z | 011b | Independent half-bridge (for all three half-bridges) |
| Not Available | 100b | Phases A and B are independent half-bridges, Phase C is independent FET |
| 75 kΩ to DVDD | 101b | Phases B and C are independent half-bridges, Phase A is independent FET |
| 18 kΩ to DVDD | 110b | Phases A is independent half-bridge, Phase B and C are independent FET |
| 0.47 kΩ to DVDD | 111b | Independent MOSFET (for all three half-bridges) |