Datasheet
For Air-Conditioner Fan Motor
3-Phase Brushless Fan Motor
Driver
BM6249FS
General Description
Key Specifications
This 3-phase Brushless Fan motor driver IC adopts
PrestoMOS™ as the output transistor, and put in a small
full molding package with the 180° sinusoidal
commutation controller chip and the high voltage gate
driver chip. The protection circuits for overcurrent,
overheating, under voltage lock out and the high voltage
bootstrap diode with current regulation are built-in. It
provides downsizing the built-in PCB of the motor.
Output MOSFET Voltage:
Driver Output Current (DC):
Driver Output Current (Pulse):
Output MOSFET DC On Resistance:
Duty Control Voltage Range:
Phase Control Range:
600V
±2.5A (Max)
±4.0A (Max)
1.7Ω (Typ)
2.1V to 5.4V
0° to +40°
+150°C
Maximum Junction Temperature:
Package
SSOP-A54_36A
W(Typ) x D(Typ) x H(Max)
22.0mm x 14.1mm x 2.4mm
Features
600V PrestoMOS™ Built-in
Output Current 2.5A
Bootstrap operation by floating high side driver
(including diode)
180° Sinusoidal Commutation Logic
PWM Control (Upper and lower arm switching)
Phase control supported from 0° to +40° at 1° intervals
Rotational Direction Switch
FG signal output with pulse number switch (4 or 12)
VREG Output (5V/30mA)
Protection circuits provided: CL, OCP, TSD, UVLO,
MLP and the external fault input
Fault Output (open drain)
SSOP-A54_36
SSOP-A54_36A
Applications
Air Conditioners; Air Purifiers; Water Pumps;
Dishwashers; Washing Machines
Typical Application Circuit
VDC
GND
D1
C5
C6
VCC
R1
VSP
C7
C8
C13
C1
C2~C4
M
R2
C9
HW HV HU
C11
R4
R3
R8
FG
Q1
C12
R7
DTR
Figure 1. Application Circuit Example
〇Product structure : Semiconductor IC 〇This product has no designed protection against radioactive rays
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TSZ02201-0P1P0C402210-1-2
22.Feb.2019 Rev.002
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