Texas Instruments LaunchPad MSP430FR2476, User Manual

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ez-FET: DCDC, Voltage-Divider, Power-Switch
12/19/2018
MCU045A_eZFET_DCDC.SchDoc
Sheet Title:
Size:
Mod. Date:
File:
Sheet: of
A3 http://www.ti.com
Contact: http://www.ti.com/support
LP-MSP430FR2476 Project Title:
Designed for: Public Release
Assembly Variant: 001
Texas Instruments 2018
Drawn By:
Engineer:
S Kim
Texas Instruments and/or its licensors do not warrant the accuracy or completeness of this specification or any information contained therein. Texas Instruments and/or its licensors do not
warrant that this design will meet the specifications, will be suitable for your application or fit for any particular purpose, or will operate in an implementation. Texas Instruments and/or its
licensors do not warrant that the design is production worthy. You should completely validate and test your design implementation to confirm the system functionality for your application. Version control disabled SVN Rev:
MCU045 Number: Rev: A
TID #: N/A
Orderable: LP-MSP430FR2476
EZFET_DCDCRST
EZFET_DCDCTEST
to Voltage-Divider
to Cal-Resistors
to DCDC-Switch
to Host-MCU
to Voltage-Divider
to Host-MCU
to Host-MCU
EZFET_VCC
EZ_GND
EZFET_DCDCCAL0
EZFET_DCDCCAL2
to Cal-Resistors
DCDC-Calibration Resistors
EZFET_VCCOUT
DCDC-MCU
EZ_GND
EZFET_VCC
EZFET_A_VCC
EZ_GND
EZFET_VCCOUT
EZ_GND EZ_GND
EZFET_A_VCCOUT EZFET_A_VCCOUT2ADC EZFET_A_VBUS
to DCDC-MCU to DCDC-MCU to Host-MCU to Host-MCU
Voltage Dividers
EZFET_VCCOUT EZFET_VBUS
EZ_GND EZ_GND EZ_GND EZ_GND
EZFET_VCCOUT
EZ_GND
EZ_GND
DCDC-Switch
to DCDC-MCU
Power Switch
Energy measurement method protected under U.S. Patent
Application 13/329,073 and subsequent patent applications.
Software-controlled DCDC converter
EZFET_5V
to Host-MCU
EZ_GND EZ_GND
EZFET_VCCTARGET
EZ_GND
EZFET_VCC
EZ_GND
EZFET_VCCOUT
to Host-MCU
EZFET_DCDCCAL0
EZFET_DCDCCAL2
EZFET_DCDCPULSE
EZFET_VCCEN2 EZFET_VCCEN1
EZFET_DCDCCAL1
EZFET_A_VCCOUT
EZFET_DCDCPULSE
EZFET_DCDCIO0
EZFET_DCDCIO1
EZFET_A_VCC
EZFET_DCDCCAL1
EZFET_SDA
EZFET_SCL
4.7k
R118
4.7k
R119
220k
R125
220k
R129
2.20k R133
3.30k R134
6.81k R137
2.2uF
C127
4.7uF
C128
820 R121
1
2
3
D104
BAS40-05,215
470
R120
1
Q100
DMG1013UW-7
1.00M
R122
DNP
0
R124
1
Q101
BC850CW,115
D105
BAS40-05,215
2.2uH
L102
4.7uF
C132
0.047
R123
VIN1
1
ON1
3
VBIAS
4
ON2
5
VIN2
6
VOUT2
8
CT2
10
GND
11
CT1
12
VOUT1
14
DAP
15
VIN1
2
VOUT1
13
VIN2
7
VOUT2
9
TPS22968NDPUR
U105
47k
R135
47k
R136
240k
R126
220k
R127
220k
R128
220k
R132
150k
R130
220k
R131
P1.0/TA0CLK/ACLK/A0/CA0
1
TEST/SBWTCK
10
P2.7/XOUT
11
P2.6/XIN/TA0.1
12
AVSS
13
DVSS
14
AVCC
15
DVCC
16
PAD
17
P1.1/TA0.0/A1/CA1
2
P1.2/TA0.1/A2/CA2
3
P1.3/ADC10CLK/CAOUT/A3/VREF-/VEREF-/CA3
4
P1.4/SMCLK/TA0.2/A4/VREF+/VEREF+/CA4/TCK
5
P1.5/TA0.0/SCLK/A5/CA5/TMS
6
P1.6/TA0.1/SDO/SCL/A6/CA6/TDI/TCLK
7
P1.7/CAOUT/SDI/SDA/A7/CA7/TDO/TDI
8
RST/NMI/SBWTDIO
9
MSP430G2452IRSA16T
U104
EZ_GND
4.7uF
C130
EZFET_VCC
1uF
C140 0.1uF
C129
0.1uF
C141
0.1uF
C131
0.1uF
C133 DNP
33pF
C134
33pF
C135
33pF
C136
33pF
C137
33pF
C138
DNP
33pF
C139
DNP
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Schematics
23 SLAU802 – March 2019
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MSP430FR2476 LaunchPad™ Development Kit (LP ‑ MSP430FR2476)
Figure 17. Schematics (2 of 4)