3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Hardware Design <strong>Co</strong>nsiderations<br />
4.2 Introduction<br />
The hardware for motor control developed for the reference design has<br />
the power output for the motor, and the microcontroller on the same<br />
board. In addition to the hardware that is needed to run the motor, a<br />
variety of feedback signals that facilitate control algorithm development<br />
are included.<br />
4.3 Power Supply<br />
The main power input to the board is through a power jack (J1). From<br />
this power input, V_BUS signal is generated. This voltage (V_BUS) is<br />
generated through a rectifier bridge (B2). To minimize the effects of the<br />
in-rush current when S4 is turned on, a NTC (RT1) was placed to slowly<br />
charge V_BUS capacitor (C1). When S4 is turned OFF, C1 is sometimes<br />
charged (depending on last system operation). To avoid any risk, a<br />
discharge resistor (R52) is connected in parallel to C1. See Figure 4-1.<br />
NOTE:<br />
There is also an Overvoltage (R7) and an Overcurrent (F2) protection.<br />
J1<br />
PLUG AC<br />
1 2<br />
S4<br />
10A<br />
F2<br />
7A Fast Acting<br />
RT1<br />
CL-40<br />
t<br />
C1<br />
(1500uF/250V @ 127VAC) (560uF/400V @ 230VAC)<br />
V_BUS<br />
C2<br />
3<br />
C39<br />
- +<br />
+<br />
C46<br />
22nF / 400V<br />
22nF / 400V 22nF / 400V<br />
R7<br />
(BC1429-ND @ 127VAC) (BC1432-ND @ 230VAC)<br />
B2<br />
GBPC2508W<br />
R52<br />
(47K/1W @ 127VAC) (150K/1W @ 230VAC)<br />
Figure 4-1. V_BUS Power Supply<br />
DRM007<br />
BLDC Motor <strong>Co</strong>ntrol Board for Industrial and Appliance Applications<br />
56 Hardware Design <strong>Co</strong>nsiderations MOTOROLA
Change language