LV11961HA-AH_15 데이터 시트보기 (PDF) - ON Semiconductor

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LV11961HA-AH_15

Single-phase FAN Motor Driver

ON Semiconductor 

LV11961HA

- Lock protection and Auto restart

In case that the motor is locked, this IC operates to protect the motor from the damage by constant large

current.

If the crossing of each hall signals isn’t detected within a specified period of time, motor driving is cut by

turning off the output of high side driving.

After a specified time from turning off the output, IC retries to operate in Start-up mode, as shown in Fig.7.

IN1

Regular Rotation

Motor Lock

IN2

Motor re-rotating

OUT1

OUT2

RD

FG

Regular mode

TACT

[ =0.75sec(typ)

Waiting for FG pulse

TDET

[ =7sec(typ) ]

Lock protection

Re-start

Restart mode

( similar to Start-up mode)

Fig.7

- Others

This IC has protective functions which are Under Voltage Lock Out (UVLO) and Over Voltage Protection

(OVP).

The active level of UVLO is under 2.9V (typical) at VCC and the return level is over 3.1V (typical). If UVLO

is active, Both of OUT1 and OUT2 are under sleep mode.

The active level of OVP is over 19.8V (typical) at VCC and the return level is under 17.8V (typical). If OVP

is active, high side of OUT1 and OUT2 is into sleep but low side keeps on operating according to input

signals.

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