DMC4040SSD Flyer

Issue Number | 001
June 2011
New Product
Announcement
DMC4040SSD
Complementary Dual MOSFET
reduces motor losses
For use in low voltage single and
three-phase brushless DC (BLDC)
motor control applications, the
DMC4040SSD complementary
dual MOSFET from Diodes
Incorporated features matched
N-channel and P-channel
RDS(ON) performances to ensure
DC losses in motor loads are
balanced and minimized.
The enhancement mode MOSFET
pair has a 40V VDS rating,
making them suitable for 24V DC
motor systems controlling
cooling and extractor fans,
pumps, compressors and printer
heads. The complementary
MOSFETs’ low RDS(ON)
performance of 25mΩ at a VGS
of 10V means conduction losses
can be limited with a consequent
reduction in power dissipation
and increase in overall product
efficiency.
The DMC4040SSD has a
continuous current rating of 6A
and a pulsed current rating of
29A, enabling motor torque
currents of up to 5 times the
continuous current to be
supported during motor start up
or stalled motor conditions.
Packaged in the industry
standard SO-8 package, the
DMC4040SSD package will also
bring PCB space saving
advantages over single MOSFET
package alternatives.
The Diodes’ Advantage
Matched RDS(ON)
The DMC4040SSD features matched RDS(ON) of 25mOhm ensuring motor load
losses are matched and minimzed
29A Pulsed current rating
During motor start up the windings of a brushless DC motor draw an energising
current of upto 5x the continuous current rating for short period of time. The pulse
current rating of a MOSFET is therefore critical.
40V VDS rating
40V VDS rating provides sufficient guardband for voltage spikes/transients to
ensure safe operation from 24V DC supplies
Circuit Function
Half bridge driver in single phase and three phase brushless DC (BLDC) motors.
Target Markets
Extraction Fans
Compressors
Cooling Fans
Printers
Pumps
www.diodes.com
Issue Number | 001
June 2011
New Product
Announcement
DMC4040SSD
Typical 3 phase BLDC circuit diagram
DMC4040SSD
VDD
DC
+5V/+8V
DC
PHA_P
+25V
PHA_P
PHB_P
PHC_P
PHC_P
PHA_N
PHA_N
PHB_N
BLDC
DMC4040SSD
PHC_N
Driver IC/
Micro plus buffer stage
PHC_N
DMC4040SSD
DMC4040SSD Product Table
Product
Configuration
DMC4040SSD Complementary
Package
Type
VDS (V)
VGS (±V)
PD (W)
Id (A) @
25C
SO-8
N
P
40
-40
20
20
1.8
7.5
-7.3
RDS(ON) (mΩ max) at VGS=
VGS=10V
VGS=4.5V
Vgsth
min(V)
Vth max
(V)
Ciss typ.
(pF)
Qg (nC)
@10V
Qg (nC)
@4.5V
25
25
40
45
0.8
-0.8
1.8
-1.8
1790
1643
37.6
33.7
16
14
Cross Reference
Part Number
Toshiba
TPC8406
Vishay
S14564DY
Fairchild
FDS4987C
NXP
N/A
AOS
N/A
Diodes Solutions for Motor Control applications
To create a complete high efficiency BLDC motor control solution, the DMC4040SSD MOSFET package can also be deployed in
conjunction with Diodes’ own range of ZXBM102x single-phase and ZXBM200x two-phase pre-driver motor controllers and
companion Hall sensors.
For further information on Hall Sensors please visit:
http://www.diodes.com/products/catalog/browse.php?parent-id=110
For further information on Pre-Driver Motor Controller IC’s please visit:
http://www.diodes.com/products/catalog/list.php?parent-id=122
www.diodes.com
Similar pages