Trinamic TMC603-EVAL evaluation Board TMC603-EVAL 데이터 시트
제품 코드
TMC603-EVAL
TMC603 DATA SHEET (V. 1.05 / 11. Mar. 2009)
28
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
ICs which are directly supplied by the battery. In order to safely switch off the motor bridges during
standby, the gates of the high side MOSFETs become actively held in a discharged state using a low
current signal MOSFET in SOT23 package. Before entering standby mode, the motor shall be stopped
and the TMC603 should be disabled.
standby, the gates of the high side MOSFETs become actively held in a discharged state using a low
current signal MOSFET in SOT23 package. Before entering standby mode, the motor shall be stopped
and the TMC603 should be disabled.
+Vbattery
VM
FDC5614P
+V
M
switched,
3A max.
+V
M
to bridge, only
220n
100K
27k
electronic
ON switch
ENABLE
TMC603
HSx
(only shown for
one high side
MOSFET)
one high side
MOSFET)
2N7002
2N7002
enable
1M
Standby power
supply 5-12V
POWER
SWITCH
SWITCH
SAFE
OFF
other bridges
10µ
nSTDBY
figure 20: low power standby
5.5.6
Low voltage operation down to 9V
In low voltage operation, it is important to keep the gate driving voltages as high as possible. The
switching regulator for VLS thus is not needed and can be left out. Tie the pin COSC to GND. VLS
becomes directly tied to +VM, which is possible as long as the supply voltage does not exceed 14V
(16V peak). However, now a source for the Villard voltage doubler is missing. A simple solution is to
use a CMOS 555 timer circuit (e.g. TLC555) oscillating at 250 kHz (square wave) to drive the voltage
doubler.
switching regulator for VLS thus is not needed and can be left out. Tie the pin COSC to GND. VLS
becomes directly tied to +VM, which is possible as long as the supply voltage does not exceed 14V
(16V peak). However, now a source for the Villard voltage doubler is missing. A simple solution is to
use a CMOS 555 timer circuit (e.g. TLC555) oscillating at 250 kHz (square wave) to drive the voltage
doubler.
SWOUT
VLS
5VOUT
100nF
VM
VCC
VCP
BAS40-04W
COSC
100n
(2x)
(2x)
470n
SMD
induct.
1µH
or 4R7
induct.
1µH
or 4R7
100n
(2x)
(2x)
optional supply filter
components when supply
ripple is high due to low
filter capacity for
transistor bridges
components when supply
ripple is high due to low
filter capacity for
transistor bridges
V
M
+10V
charge pump
5V supply
12V supply
(150mA with
sel. transistor)
sel. transistor)
1µ
100n
16V
TMC603
TLC555
VCC
RESET
OUT
TRIG
GND
CONT
THRES
DISCH
22k
150p
+9V...14V
figure 21: low voltage operation