UPD16873C 查看數據表（PDF） - NEC => Renesas Technology

零件编号

产品描述 (功能)

生产厂家

UPD16873C

MONOLITHIC 3-ASPECT SPINDLE MOTOR DRIVER

NEC => Renesas Technology 

(4) Output terminal voltage wave

OUT0

PWM

µPD16873/A/B/C

PWM

OUT1

PWM

PWM

OUT2

PWM

PWM

Caution

(1) About output current

The rated ouptut current differs depending on whether the motor revolves at a constant speed (steady state), is

started (steady state), or Reverse brake is applied. The rated DC current when the motor revolves at a constant

speed is 0.5 A, and the rated instantaneous current when the is started is 1.3 A. When the motor is stopped by

using Reverse brake, the maximum current is 1.9 A.

When use Reverse brake, a current exceeding that when the motor revolves at a constant speed (immediately

before a brake is applied) instantaneously flows because of the counter electromotive force due to the motor

inductance. Determine the value of over current for steady state, taking the peak current for using Reverse

brake to the motor into consideration.

(2) About output pin voltage

Output terminal (OUT0, OUT1, OUT2) takes the voltage which exceeds a motor power supply during following

counter current.

Maximum rate of output pin voltage is 6.7 V. Be careful that an output terminal doesn’t take a voltage over 6.7 V.

VM

VM

ID

ON

OUTA

OFF

OFF

ON

OUTB

RON(N)

VOUTB = IDR (ROUTB + RS)

PWM-ON

OUTA

OFF

ID Q1

OFF: µPD16873/A

PWM ON: µPD16873B/C

VOL

OUTB

RON(N)

VOUTB = VM + VOL

PWM-ON

RF

ISEN

RS

Lower Nch MOC: PWM-ON time

RF

ISEN

RS

Lower Nch MOC: PWM-OFF time

Data Sheet S13870EJ1V0DS00

11

Share Link: