PSoC Analog Coprocessor Pioneer Kit Guide, Doc. # 002-11190 Rev. *B
40
A.2.2
Power Supply System
The power supply system is designed to support 1.8-V, 3.3-V, or 5-V operation when supplied from
the external VIN or USB connector. The selection between 1.8 V, 3.3 V, and 5 V is made through a 4-
pin jumper J9. If the board is powered from the USB connector, it provides 3.3 V and 5 V to the
Arduino-compatible power headers. The board also has a provision for a 3-V coin cell. However, the
coin cell holder is not loaded by default. If you want to use the 3-V coin cell, you should populate the
coin cell holder (BHX1-1225-SM) at the V1 position on the bottom side of PSoC Analog Coprocessor
Pioneer Kit. If the kit is used as a shield, then it can be powered from the 5-V supply of the Arduino-
compatible baseboard.
shows the schematics of power regulator circuit. Refer to
Figure A-2. Schematics of Power Regulator Circuit
The voltage regulator (U3, MB39C011APFT-G-BND-ERE1) from Cypress has two channels that
provide different voltage levels. The regulator generates a constant 3.3 V on one channel. The other
channel can be configured to generate 1.8 V, 3.3 V, or 5.0 V by setting the jumper J9 to desired
position. The digital potentiometer (U12) can be used to generate voltages in the 1.8 V–3.3 V range
when powered from USB. This feature will be available in future versions of KitProg2. A 4-pin jumper
(J9) is used to select any one of the three voltage levels (1.8 V, 3.3 V, or 5.0 V) or a programmable
voltage level (1.8 V–3.3 V). VDD source selection slider switch (SW4) is used to select the power
supply from the voltage regulator, USB or the 3-V coin cell.
Power Supply
Input Voltage Range for VIN is 6-12V
Regulator
Power Selection
SHORT 3 & 2
SHORT 4 & 2
O/P VOLTAGE
JUMPER SETTING
VOLTAGE SELECTION JUMPER SETTINGS
1.8V
5.0V
3.3V
REMOVE JUMPER
MODE
SHORT 1 & 2
1.8V-3.3V
PROGM.
MANUAL
MANUAL
MANUAL
NO LOAD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
VSSD
POS1 -- Regulator
POS2 -- USB (5V)
POS3 -- Battery
VSSD
VSSD
VSSD
Power LED
NO LOAD
NO LOAD
NO LOAD
VO
_
V
3
.3
CTL
OUT2_2
OUT2_1
OUT1_2
OUT1_1
CT
L
OUT1_1
OUT1_2
OUT2_1
OUT2_2
VO
_
R
EG
VBAT
VBAT
J1_V5.0
VPW R
VPW R
VO_REG
J1_V5.0
VO_REG
VPW R
VCC
VBAT
VO_V3.3
VBUS
VCC
VCC
VDD
DIGPOT_W P
DIGPOT_SCL
DIGPOT_SDA
DIGPOT_W P
R9
7.5K 5%
C92
0.1 uF
C55
1 nF
R171
15.8K
POS1
POS2
POS3
SW 4
DP3T
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
R16
910 ohm 1%
D11
PMEG2010AEB,115
L2
6.8uH
R170
30K
TP21
BLACK
R17
820 ohm 5%
R102
6.2K 1%
R12
20K 1%
U12
ISL95810UIU8Z-T
VCC
8
RH
7
RL
6
RW
5
WP
1
SCL
2
SDA
3
GND
4
L1
6.8uH
C6
1 nF
C86
0.1 uF
TP13
R13
18K 1%
U15
DMHC3025LSD
N1G
1
N1D/P1D
2
N1S/N2S
3
N2G
4
P1G
8
P1S/P2S
7
N2D/P2D
6
P2G
5
C2
1.0 uF
C1
0.1 uF
R100
9.1K 1%
C53
1.0 uF
J9
CON3x2
1
1
2
2
3
3
4
4
R6
560 ohm
R15
910 ohm 1%
C93
1.0 uF
C5
2.2 nF
V1
M
P
D_
BHX1
-1
2
2
5
-SM
2
1
3
R172
6.8K
+
C9
22 uF
C85
0.1 uF
U3
MB39C011APFT-G-BND-ERE1
VCC
1
CTL
13
-INE1
7
OUT1-1
2
-INE2
10
FB1
6
FB2
11
CSCP1
8
CSCP2
9
RT
5
VH
16
VB
4
OUT1-2
3
OUT2-1
15
OUT2-2
14
GND
12
0805
LED4
AMBER LED
1
2
R14
5.1K 5%
C84
0.1 uF
R20
18K 1%
+
C10
22 uF
R101
13.3K 1%
D12
Zener 3.3V
+
C13
10 uF
C4
1.5 nF
R8
6.8K 5%
R60
820 ohm 5%
C7
6.8 nF
TP5
BLACK
C8
6.8 nF