LV11961HA-AH 查看數據表（PDF） - ON Semiconductor

零件编号

产品描述 (功能)

比赛名单

LV11961HA-AH

FAN Motor Driver, Single-phase

ON Semiconductor 

LV11961HA

Similarly in case that output turns from

constant low side driving to PWM operation,

PWM high duty increases by 12.5% of actual

duty every 12.5% of Soft switching term.

However fixed regenerating term is inserted in

300 usec(typ) after phase switching, as shown

in Fig.6.

CPWM

VTH

TPWM

(PWM)

TDH TPWM

TPWM

OUT

(TDH x 0%) (TDH x 12.5%) TDH x 25% TDH x 37.5% TDH x 50% TDH x 62.5% TDH x 75% TDH x 87.5%

TDH

TSSD

TSSD

(= TSSW x 12.5%)

Fixed regenerating term

( =300usec(typ) )

TSSD

Point of phase switching

TSSD

TSSD

TINH(L) x 18.75% = TSSW

Term of Soft off switching

Fig.6

TSSD

TSSD

TSSD

Term of PWM action

according to VTH level

- 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.

www.onsemi.com

13

Share Link: