Trinamic TMC603-EVAL evaluation Board TMC603-EVAL 데이터 시트
제품 코드
TMC603-EVAL
TMC603 DATA SHEET (V. 1.05 / 11. Mar. 2009)
25
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
5.5 Power supply
The TMC603 integrates a +12V switching regulator for the gate driver supply and a +5V linear
regulator for supply of the low voltage circuitry. The switching regulator is designed in a way, that it
provides the charge pump voltage by using a Villard voltage doubler circuit. It is able to provide
enough current to supply a number of digital circuits by adding an additional 3.3V or 5V low voltage
linear or switching regulator. If a +5V microcontroller with low current requirement is used, the +5V
regulator is sufficient, to also supply the microcontroller.
regulator for supply of the low voltage circuitry. The switching regulator is designed in a way, that it
provides the charge pump voltage by using a Villard voltage doubler circuit. It is able to provide
enough current to supply a number of digital circuits by adding an additional 3.3V or 5V low voltage
linear or switching regulator. If a +5V microcontroller with low current requirement is used, the +5V
regulator is sufficient, to also supply the microcontroller.
+V
M
SWOUT
VLS
5V
linear
regulator
5VOUT
100nF
VM
VCC
GND
100µ
VCP
BAV99 (70V)
BAS40-04W (40V)
BAS40-04W (40V)
SS16
TP0610K
or BSS84
(opt. BC857)
L
SW
VM-12V /
2mA driver
COSC
100n
(2x)
(2x)
220n
C
OSC
: 470p ->100kHz
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
L
SW
: 220µH for 100kHz
V
M
+10V
charge pump
5V supply
12V supply
(150mA with
sel. transistor)
sel. transistor)
4µ7
Tantal 25V
1µ
220n
16V
TMC603 voltage
regulators
regulators
triangle OSC
14k
S
R
Q
Q
R
1/5R
R
+V
CC
4/5R
dutycycle
limit
limit
R2
R1
R
+V
CC
10R
150mV
triangle
triangle
5/12 VLS
startup
current
figure 18: power supply block
Pin
Comments
COSC
Oscillator capacitor for step down regulator. A 470pF capacity gives 100kHz
operation. Do not leave this pin unconnected. Tie to GND, if oscillator is not used.
operation. Do not leave this pin unconnected. Tie to GND, if oscillator is not used.
SWOUT
Switch regulator transistor output. The output allows driving of a small signal P-
channel MOSFETs as well as PNP small signal transistors
channel MOSFETs as well as PNP small signal transistors
5VOUT
Output of internal 5V linear regulator. Provided for VCC supply
5.5.1
Switching regulator and charge pump
The switching regulator has been designed for high stability. It provides an upper duty cycle limit, in
order to ensure switching operation even at low supply voltage. This allows the combination with a
Villard voltage doubler. The application schematic shows a number of standard values, however, the
coil and oscillator frequency can be altered:
The choice of the external switching regulator transistor depends on the desired load current and the
supply voltage. Especially for high switching frequencies, a low gate charge MOSFET is required. The
following table shows an overview of available transistors and indicative operation limits. For a higher
output current, two transistors can be used in parallel. In this case the switching frequency should be
halved, because of the higher gate charge leading to slower switching slopes.
order to ensure switching operation even at low supply voltage. This allows the combination with a
Villard voltage doubler. The application schematic shows a number of standard values, however, the
coil and oscillator frequency can be altered:
The choice of the external switching regulator transistor depends on the desired load current and the
supply voltage. Especially for high switching frequencies, a low gate charge MOSFET is required. The
following table shows an overview of available transistors and indicative operation limits. For a higher
output current, two transistors can be used in parallel. In this case the switching frequency should be
halved, because of the higher gate charge leading to slower switching slopes.