Datasheet
For Air-Conditioner Fan Motor
3-Phase Brushless Fan Motor
Driver
BM6244FS
General Description
Key Specifications
This 3-phase Brushless Fan motor driver IC adopts
MOSFET as the output transistor, and put in a small full
molding package with the 150°/120° 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: 0.93Ω (Typ)
Duty Control Voltage Range:
Phase Control Range:
250V
±2.0A (Max)
±4.0A (Max)
2.1V to 5.4V
0° to +30°
+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
250V MOSFET Built-in
Output Current 2.0A
Bootstrap operation by floating high side driver
(including diode)
150°/120° Selectable Commutation Logic
PWM Control (Upper arm switching)
Phase control supported from 0° to +30° 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)
Applications
Air Conditioners; Air Purifiers; Water Pumps;
SSOP-A54_36A
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
www.rohm.com
TSZ02201-0P1P0C402160-1-2
22.Feb.2019 Rev.002
© 2018 ROHM Co., Ltd. All rights reserved.
1/32
TSZ22111 • 14 • 001