MP6546

– 22V, 3A PEAK, 3-PHASE BLDC DRIVER WITH 1MHZ I2C INTERFACE

MP6546 Rev. 1.0

MonolithicPower.com

17

3/20/2023

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THETA_BIAS (02h)

The THETA_BIAS command configures sensor angle bias.

Bits

Name

Description

15:4

THETA_BIAS[11:0]

Sets the mechanical theta bias.

3:0

POLE_PAIR[3:0]

Sets the motor pole pairs.

CONTROL2 (03h)

The CONTROL2 command configures some basic settings.

Bits

Name

Description

15:13

SPI_BAUD[2:0]

Set the baud rate of SPI.

0: SPI CLK = 7.5MHz

1: SPI CLK = 3.75MHz

2: SPI CLK = 2.5MHz

3: SPI CLK = 1.875MHz

4: SPI CLK = 1.5MHz

5: SPI CLK = 1.25MHz

6: SPI CLK = 1.07MHz

7: SPI CLK = 0.938MHz

12:9

RESERVED

Reserved.

8

TRIM_ENP

0: The 3.3V LDO is off in standby mode

1: The 3.3V LDO is on in standby mode

7:0

PCODE[7:0]

Production code number.

ANGLE_TEST (07h)

The ANGLE_TEST command configures the angle test value or output duty.

Bits

Name

Description

15:12

RESERVED

Reserved.

11:0

ANGLE_T[11:0]

If DRV_MOD = 0: Sets the align angle in vector control mode

If DRV_MOD = 1: Sets phase A

’s duty in duty control mode

D_AXIS_VOLTAGE (09h)

The D_AXIS_VOLTAGE command configures the voltage vector or output duty.

Bits

Name

Description

15:10

RESERVED

Reserved.

9:0

UD[9:0]

If DRV_MOD = 0: Sets the d-axis voltage in vector control mode

If DRV_MOD = 1: Set

s phase B’s duty in duty control mode

Q_AXIS_VOLTAGE (09h)

The Q_AXIS_VOLTAGE command configures the voltage vector or output duty.

Bits

Name

Description

15:10

RESERVED

Reserved.

9:0

UQ[9:0]

If DRV_MOD = 0: Sets the Q-axis voltage in vector control mode

If DRV_MOD = 1: Sets

phase C’s duty in duty control mode