Texas Instruments MSP-EXP430F5529LP 사용자 설명서
USB Connector
TPS62237
DC-DC Converter
Isolation
Jumper Block
Jumper Block
eZ-FET lite 5V
e
Z
-FE
T
l
it
e
3
.3
V
5V in
3.3V out
MS
P
43
0
F
5529
T
arg
e
t
5529 Target + BoosterPack 5V
5529 Target + BoosterPack 3.3V
MSP430F5529
Target Device
* 5V Isolation
Block Jumper
Disconnected
Disconnected
e
Z
-F
ET
lite
Hardware
2.4.3
External 5-V Power Source With USB Connection
In certain situations, it is advantageous to have an external 5-V source and USB connected
simultaneously (see
simultaneously (see
). The USB connection may be needed for direct USB communication, back-
channel UART, or to allow for programming through emulation. In this scenario, the 5V jumper in the
isolation block must be disconnected to allow for the two separate 5-V sources. If using external power
source for both 3.3 V and 5 V, consider recommendations for each.
isolation block must be disconnected to allow for the two separate 5-V sources. If using external power
source for both 3.3 V and 5 V, consider recommendations for each.
Figure 20. Power Block Diagram for External 5-V Power Source With USB Connection
24
MSP430F5529 LaunchPad™ Development Tool (MSP
‑
EXP430F5529LP)
SLAU533A – September 2013 – Revised January 2014
Copyright © 2013–2014, Texas Instruments Incorporated