M63028FP データシートの表示（PDF） - Renesas Electronics

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M63028FP

Spindle Motor and 5ch Actuator Driver

Renesas Electronics 

M63028/029FP

VM1

5V

Rs

Rh

RSP

HB

R2

HU+

CTL

SPIN

HU-

HV+

M

R1

HV-

HW+

1.65v

REF

HW-

U

V

W

GND

Slide channel

The relationship between the differential voltage between SLIN and REF and the torque is shown in following Figure.

The voltage gain[Gvo] is 1.0 [V/V]. The current gain is 2.0[A/V] (at sensing resistor : 0.5 Ω and R1=∞, R2=0 Ω) in

forward torque directions, and the dead zone is from 0mV to 80mV (at R1=∞, R2=0 Ω)).

The coil current gain under the reverse torque is the same with in forward torque directions.And the limitation function

gets on when the differential voltage of VM2(12V) to RSL is 0.5V.

Therefore current-gain-control and current-limit of this IC is determined with sensing resister value.

current limit

Forward

Dead zone

Gio

Dead zone

Gio

Reverse

current limit

Rev.1.0, Sep.16.2003, page 13 of 21

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