MP6570GR datasheet(36/55 Pages) MPS

36 / 55 page

MP6570

– 3-PHASE BLDC CONTROLLER WITH HIGH-ACCURACY ANGULAR SENSOR

MP6570 Rev. 1.0

www.MonolithicPower.com

3/4/2019

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

Address: 33h

Bit[15:0]

Name

Default

Description

[6:5]

BRK_MOD

00: coasting-brake mode with all MOSFETS off when braked

01: fast-brake mode with all low-side MOSFETS on when

braked

10: energy-regeneration brake mode with close-loop control

when braked

[3]

EXBRK

0: use internal register bit to enable brake mode

1: use external BRAKE pin signal to enable brake mode

FG/HOME Output Indication

By setting the FGHOME bit to 1, the MP6570

outputs a rotor speed signal through the

FG/HOME pin. In one angular sensor cycle, the

FG frequency can be set to 1, 2, 4, 8, 16, or 32

times by setting the register bits FG_SEL.

When setting the FGHOME bit to 0, the

MP6570 outputs a rotor home indication signal

through the FG/HOME pin. The signal remains

at logic high when the angular sensor angle is

between the HOME_P1 and HOME_P2 setting

values.

Address: 05h

Bit[15:0]

Name

Default

Description

[13:9]

FGSEL

00000

FGSEL[4:0] defines the (FG) number of pulses for the speed

indication signal per angular sensor cycle.

5'd0: 32 pulses per cycle

5'd1: 16 pulses per cycle

5'd3: 8 pulses per cycle

5'd7: 4 pulses per cycle

5'd15: 2 pulses per cycle

5'd31: 1 pulse per cycle

Address: 31h

Bit[15:0]

Name

Default

Description

[15:0]

HOME_P1

0800H

The lower threshold to output the HOME signal as the rotor

position indication. The HOME signal is high when the rotor

position is between HOME_P1 and HOME_P2.

Address: 32h

Bit[15:0]

Name

Default

Description

[15:0]

HOME_P2

0C00H

The upper threshold to output the HOME signal as the rotor

position indication.

Address: 33h

Bit[15:0]

Name

Default

Description

[14]

FGHOME

1: FG/HOME pin outputs a FG signal

0: FG/HOME pin outputs a HOME signal

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