TMC603 DATA SHEET (V. 1.06 / 26. Mar. 2009)
40
8.2 MOSFET examples
There is a huge number of MOSFETs on the market, which can be used in combination with the
TMC603. The user choice will depend on the electrical data (voltage, current, RDSon) and on the
package and configuration (single / dual). The following table gives a few examples of SMD MOSFETs
for different motor currents. The MOSFETs explicitly are modern types with a low total gate charge.
With dual configurations, only three MOSFET packages are required to control a BLDC motor, but the
current which can be reached is significantly lower due to thermal restrictions of the packages.
For the actual application, we suggest to calculate static and dynamic power dissipation for a given
MOSFET, as described in the previous chapter. Especially for sine commutation and chopper
frequencies above 20kHz, transistors with a gate charge below 100nC should be preferred.
Transistor
type
manufacturer
RDSon
voltage package &
max. motor
total gate
configuration current (*) charge @10V
unit
mΩ
1.9
2.6
2.9
4.2
V
A
nC
124
52
IBP019N06L3
SiE812DF
Infineon
Vishay
60
40
60
60
DPACK
PolarPAK
TO220
30
30
30
30
IPP032N06N3 Infineon
125
85
IRFB3306
International
TO220 /
DPACK
Rectifier
Vishay
Vishay
SiE816DF
7.4
9.3
60
60
PolarPAK
20
25
51
47
SUM75N06-
09L
D2PAK
(TO263)
FDD10AN06A0 Fairchild
10.5
60
DPAK
20
28
(TO252A)
FDD5353
SI7964DP
Fairchild
Vishay
12.3
23
60
60
DPAK
15
46
43
PowerPAK-
SO8 (dual)
9.6
SI4946
Vishay
55
60
SO8 (dual)
4.5
19
(*) Remark: The maximum motor current applicable in a given design depends upon PCB size and
layout, since all of these transistors are mainly cooled via the PCB. The data given implies adequate
cooling measures taken by the user, especially for higher current designs.
8.3 Driving a DC motor with the TMC603
The TMC603 can also be used for DC motor applications, using a full bridge or a half bridge for motor
PWM operation with or without reverse direction operation. For single half bridge applications, all
TMC603 gate drivers can be paralleled, taking advantage of the three time increase in gate drive
capability. This way a motor current of up to 100A can be driven. The drive system can use the shunt
less current sensing capability for best efficiency. A Schottky diode across the non-chopped transistor
optimizes slopes and electromagnetic emission characteristics (see chapter 5.2.8).
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
