Home Appliance Electronic Control Devices - SmartData
Home Appliance Electronic Control Devices - SmartData
Home Appliance Electronic Control Devices - SmartData
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18<br />
LB11977V<br />
LB11820M<br />
Three-phase PWM sensorless motor driver IC Three-phase direct PWM drive brushless motor driver<br />
Applications Applications<br />
Motor drive for DC fan motors used in refrigerators (internal and external fans) and similar<br />
products<br />
Functions and Features<br />
Three-phase sensorless drive<br />
Three-phase full-wave current linear drive<br />
Current limiter circuit<br />
Output stage high side saturation prevention circuit<br />
Coil back EMF based FG output<br />
Thermal shutdown circuit<br />
Beat lock prevention circuit<br />
Package: SSOP24J<br />
5<br />
CT<br />
0.1µF<br />
PWM<br />
BFG<br />
C1<br />
C2<br />
PCOU<br />
VCOI<br />
CX<br />
VC<br />
FC<br />
Thermal shutdown<br />
circuit<br />
Startup control<br />
circuit<br />
OSC<br />
PLL VCO<br />
200<br />
200<br />
+<br />
-<br />
Mask circuit<br />
Timing control<br />
circuit<br />
Rotor position<br />
detection circuit<br />
Divide-by-8<br />
circuit<br />
Beat lock<br />
prevention circuit<br />
+<br />
-<br />
Soft switching<br />
drive circuit<br />
200<br />
Current limiter<br />
Output drive circuit<br />
High side saturation<br />
prevention control<br />
VCC<br />
RF<br />
UOUT<br />
VOUT<br />
WOUT<br />
PGN<br />
GND<br />
0.2<br />
VREG<br />
HP<br />
TOC<br />
VREG<br />
VCTL<br />
-<br />
+<br />
PWM PWM<br />
OSC<br />
VREF<br />
S/S<br />
PWM<br />
IN<br />
S/S PWMIN CSD F/R BR REVSEL IN1+ IN1- IN2+ IN2- IN3+ IN3- GND<br />
pulsec input<br />
SD<br />
OSC<br />
F/R<br />
BR<br />
LVSD<br />
LOGIC TSD<br />
REV<br />
SEL<br />
VCC<br />
1<br />
COMP<br />
HALL<br />
LOGIC<br />
HALL<br />
HYS AMP<br />
VCC3<br />
12VREG<br />
VREG<br />
PRI<br />
DRIVER<br />
CURR<br />
LIM<br />
12REG<br />
LVS<br />
VCC2<br />
VREG<br />
VCC1<br />
UL<br />
UH<br />
VL<br />
VH<br />
WL<br />
WH<br />
RF<br />
+<br />
12V<br />
Motor drivers<br />
Motor drive for the larger motors used in water heaters, air conditioner, and other appliances.<br />
Motor drive circuits with the desired output power (voltage and current) are implemented using<br />
external discrete transistors for the output stage.<br />
Functions and Features<br />
Three-phase bipolar drive<br />
Direct PWM drive<br />
Built-in braking function (short-circuit<br />
braking)<br />
Forward/reverse direction setting circuit<br />
Built-in protection circuits for reverse<br />
direction operation<br />
Full complement of built-in protection circuits,<br />
including current limiter circuit, undervoltage<br />
protection circuit, motor constraint protection<br />
circuit, and thermal protection circuit<br />
Motor operation can be controlled by either<br />
a command voltage or the duty of the input<br />
PWM signal.<br />
Thermal shutdown circuit<br />
Beat lock prevention circuit<br />
Package: MFP30SD<br />
V<br />
M<br />
+<br />
19
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