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B. Schematic
Below are two copies of the schematic for the TSWIRX-LI-EVM. The first will be best when viewed on-
screen, as it is normally oriented and can be zoomed in on for readability. The second will allow better
use in print-out form, as the landscape orientation allows a larger image to be provided. For each,
annotation has been added to indicate which part of the block diagram each component is a member of.
C1
NP
C4
10nF
50V
AC1
RX COIL
AC2
C6
1nF
PDC
50V
R2
75K
R4
4.7K
C12
47nF
J3
GND
GND
1
PDC
2
FREQ
FREQ
3
ALERT
ALERT
4
MOD_EN
MOD_EN
5
MOD_CFG
MOD_CFG
6
GND
External MCU (Optional)
GND
TSWIRX-5V-EVM
User Guide
U1
VAC1
A1
A2
VAC1
PDC
B2
PDC
D2
PDC
E2
PDC
VAC2
E1
VAC2
B4
BST
C7
1nF
C2
SW
50V
A3
C3
COMM1
SW
E3
C4
COMM2
SW
A4
FB
D3
FREQ
B3
B1
ALERT
GND
E4
C1
MOD_EN
GND
D4
D1
MOD_CFG
GND
TS51223
GND
R5
60K
GND
www.semtech.com
PDC
C2
C3
22uF
100nF
25V
25V
C5
GND
GND
47nF
L1
SW
4.7uH
R1
FB
C8
C9
C10
C11
46K
R3
22uF
22uF
22uF
22uF
10K
10V
10V
10V
10V
GND
GND
GND
GND
GND
X5R capacitors. Will only have 15-20% of the rated capacitance at 5V.
Some can be omitted if the load has capacitance.
J4
1
2
3
U2
Jumper
1
6
VIN
ENB
2
5
GND
STATB
BAT
3
4
GND
IPRGM
C20
R8
2.2uF
8.06K
10V
SC810
GND
R6
LED1
10K
GND
GND
GREEN
J2
1
+
2
Out
-
BATTERY
GND
7 of 14
Rev 1.00
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