3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
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Hardware Design <strong>Co</strong>nsiderations<br />
Power Supply<br />
From the line input jack (J1) the low voltage power supplies (5 Vdc and<br />
15 Vdc) are derived. These power supplies are generated using voltage<br />
regulators (IC2 and IC3). To help developers vary V_BUS voltage using<br />
a variable transformer in J1 and also let them program the<br />
microcontroller without having the power-stage turned on (V_BUS),<br />
an alternate Vdc power supply can be connected (J6) to keep 5 Vdc and<br />
15 Vdc on the board when varying AC voltage in J1. To enable this<br />
external power supply, S5 slide switch must be turned to “EXT” position.<br />
A green LED (D21) was included to show proper +5 Vdc power supply<br />
operation. See Figure 4-2.<br />
C47<br />
0.1 uF<br />
C49<br />
0.1 uF<br />
+15V<br />
IC2<br />
MC78M15CDT<br />
1 GN 3<br />
IN<br />
D<br />
OUT<br />
2<br />
+ C4<br />
C19<br />
IC3<br />
MC33269DT-5.0<br />
1 GN 3<br />
IN<br />
D<br />
OUT<br />
2<br />
+ C50<br />
C45<br />
R40<br />
330<br />
VCC<br />
C48<br />
0.1 uF<br />
470uF/25V<br />
100nF/25V<br />
470uF/10V<br />
100nF / 16V<br />
D21<br />
GREEN<br />
EXTERNAL_POWER_SUPPLY_CONNECTOR<br />
C2<br />
22nF / 400V<br />
J1<br />
PLUG AC<br />
1 2<br />
3<br />
C39<br />
22nF / 400V<br />
J6 1<br />
2<br />
S4<br />
10A<br />
F2<br />
7A Fast Acting<br />
R7<br />
(BC1429-ND @ 127VAC) (BC1432-ND @ 230VAC)<br />
1<br />
2<br />
3<br />
5<br />
6<br />
7<br />
F1<br />
500mA<br />
4<br />
8<br />
T1<br />
(SW-328 @ 127VAC) (DSW-328 @ 230VAC)<br />
- +<br />
RT1<br />
CL-40<br />
t<br />
B1<br />
1KAB05E-ND<br />
S5<br />
+<br />
C6<br />
470uF/25V<br />
C5<br />
0.1uF/50V<br />
C1<br />
(1500uF/250V @ 127VAC) (560uF/400V @ 230VAC)<br />
V_BUS<br />
- +<br />
+<br />
C46<br />
22nF / 400V<br />
B2<br />
GBPC2508W<br />
R52<br />
(47K/1W @ 127VAC) (150K/1W @ 230VAC)<br />
Figure 4-2. 15 Vdc and 5 Vdc Power Supplies<br />
BLDC Motor <strong>Co</strong>ntrol Board for Industrial and Appliance Applications<br />
DRM007<br />
MOTOROLA Hardware Design <strong>Co</strong>nsiderations 57
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