Hi team,
My customer is evaluating DRV8243SQRHLRQ1 in their project and met below question, could you please help review and give some comments? Thank you!
When the customer debugs the DRV8243S-Q1, the motor will operate normally with a drive current of 1A, but the IPROPI pin is always 0V. Could you please help understand why this is happening?
Below are their schematic and code.
device_8243.c
#include "drio.h"
#include "drsys.h"
#include "pldbdc_8243.h"
#include "device_8243.h"
#include "comath.h"
#include "plspi.h"
#include "plpwm.h"
#include "plspi_config.h"
#include "pladc_config.h"
uint32 pldbdc1_8243_init_cmd[] = {
/* command data */
DRV8243_CMD_WR | DRV8243_CMD_COMMAND | (DRV8243_CLEAR_FAULT | DRV8243_USE_PIN_CNTR | DRV8243_CONFIG_UNLOCK), /*0. clear fault */
// DRV8243_CMD_WR | DRV8243_CMD_SPI_IN | (0), /*1. */
DRV8243_CMD_WR | DRV8243_CMD_CONFIG1 | (DRV8243_OL_DISABLE
| DRV8243_OV_35V
| DRV8243_SSC_ENABLE
| DRV8243_OC_LATCH
| DRV8243_OT_LATCH
| DRV8243_OV_LATCH
| DRV8243_OL_LATCH), /*2. */
DRV8243_CMD_WR | DRV8243_CMD_CONFIG2 | (DRV8243_PWM_NOT_EXTEND
| DRV8243_DIAG_3
| DRV8243_ITRIP_2P97V), /*3. */
DRV8243_CMD_WR | DRV8243_CMD_CONFIG3 | (DRV8243_ITRIP_TOFF_20US
| DRV8243_SR_1P6VpUS
| DRV8243_FULLB_PWM), /*4. */
DRV8243_CMD_WR | DRV8243_CMD_CONFIG4 | (DRV8243_TOCP_6US
| DRV8243_OCP_100PER
| DRV8243_DRV_OFF_OR
| DRV8243_EN_IN1_OR
| DRV8243_PH_IN2_OR), /*5. */
DRV8243_CMD_RD | DRV8243_CMD_CONFIG2 | 0, /*6. */
DRV8243_CMD_RD | DRV8243_CMD_COMMAND | 0, /*7. */
};
const uint8 pldbdc1_8243_init_cmd_count = array_length(pldbdc1_8243_init_cmd);
Regards,
Ivy
