ZHCSN08D August 2020 – April 2024 DRV8714-Q1 , DRV8718-Q1
PRODMIX
The DRV8718-Q1 and DRV8714-Q1 support a highly configurable Half-Bridge Control Scheme in order to be adapted for a wide variety of output load configurations and control regulations. This control scheme helps to reduce the number of required PWM channels and pins from the external controller. 4 independent PWM control inputs can be provided to the INx input pins and assigned to any of the output half-bridge drivers. The device internally handles the dead-time generation between high-side and low-side switching so that a single PWM input can be used to control a half-bridge.
Additionally the DRV8714-Q1 supports several other standard control schemes for either H-bridge or solenoid control. These control schemes can be selected through the BRG_MODE register setting on SPI interface devices or MODE pin on H/W interface devices as shown in Table 7-2
| PWM Mode | SPI Interface (BRG_MODE) | H/W Interface (MODE Pin) |
|---|---|---|
| Half-Bridge Control | 00b | Level 1 - GND |
| H-Bridge Control | 01b (PH/EN) | Level 2 (PH/EN) - 47k kΩ |
| 10b (PWM) | Level 3 (PWM) - Hi-Z | |
| Split HS and LS Control | 11b | Level 4 - DVDD |