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Component Selection

List of Major Components:

Part Name/Description	Unit Quantity
Temperature Sensor Digital BOM	1
0.1 µF Ceramic Capacitor, +/-10%, X7R, 50V, 0805 package	4
10K Ohm resistor surface mount	4
Temperature Sensor Digital	4
Barrel Jack	2
4.7K Ohm resistor surface mount	2
Shared Test Points BOM
Test Points	6
LED - Green	2
220 Ohm resistor surface mount	4
Motor and Motor Driver BOM
0.033 µF ±10% 25V Ceramic Capacitor X7R 0805	4
CAP ALUM 100UF 20% 25V SMD	4
0.1 µF ±10% 50V Ceramic Capacitor X7R 1206	4
40V 100Ma Diode	2
Connector Header Through Hole 6 position 0.098” (2.50mm)	2
Connector Header Through Hole 12 position 0.100” (2.54mm)	2
5V DC MOTOR	1
Full Half-Bridge Drivers	2
Microcontroller and Voltage Regulator BOM
LM2575 Voltage Regulator	6
WSU050-4000 AC/DC Convertor	1
PIC16F18876-I/PT Microcontroller	3
Force Sensor
IC ADC 24 BIT SIGMA-DELTA 20 TSSOP	2
Op-Amp for Force Sensor	2
Sensors RoHS	2
1K Ohm resistor surface mount	2

Description:

• The bill of materials contains all the parts each section of the nerve damage therapy glove will be utilizing. All parts meet the requirements and unless specified otherwise are surface mounted. Everything from the voltage regulators to the OP-AMP and even our resistors and capacitors are surface-mounted. The only parts that aren’t surface mounted are the barrel jack, motor, microcontroller, and wall plug to supply power to the device. A variety of communication methods are utilized such as SPI, UART, and I2C. Our wall power supply supplies voltage at a measurement of 5V and 1A to a switching voltage regulator. From the switching voltage regulator the power drops down and comes out to 3.3 V. Our force sensors are resistive which utilize an ADC device to convert their analog signals to SPI so it can be read by the microcontroller. The ESP32 utilizes UART to communicate all this data over wifi to a digital storage space such as someone’s personal device or the medical records system at a doctor’s office.

Power Budget Table:

Power Budget
Team Number:	208
Project Name:	Nerve Damage Thearpy Glove
Team Member Names:	Miles Wilson, Kyle Selasky, Mingqi Yu, Felicia Szleszinski
Version:	1
A. List ALL major components (active devices, integrated circuits, etc.) except for power sources, voltage regulators, resistors, capacitors, or passive elements
All Major Components	Component Name	Part Number	“Supply
Voltage
Range”	#	“Absolute
Maximum
Current (mA)”	“Total
Current
(mA)”	Unit
	Force Sensor	GHF-10	+3.3-5V	3	100	300	mA
	Force ADC SPI Chip	MCP3562RT-E/ST	1.8-3.6V	1	100	100	mA
	Temperature Sensor	HIH6030-021-00	+2.7-5.5V	1	650	650	mA
	Motor	JSX5300-370	+5V to -5V	1	240	240	mA
	Motor Driver	IFX9201SGAUMA1	0-50V	1	500	500	mA
	ESP32	ESP32­WROOM­32	3-3.6V	1	150	150	mA
	Switching Regulator	LM2575	+2.3-6V	1	7	0.08	mA
“B. Assign each major component above to ONE power rail below. Try to minimize the number of different power rails in the design.
Add additional power rails or change the power rail voltages if needed.”
+3.3V Power Rail	Component Name	Part Number	“Supply
Voltage
Range”	#	“Absolute
Maximum
Current (mA)”	“Total
Current
(mA)”	Unit
	Force Sensor	GHF-10	+3.3-5V	3	100	300	mA
	Temperature Sensor	HIH6030-021-00	+2.7-5.5V	1	650	650	mA
	Force ADC SPI Chip	MCP3562RT-E/ST	1.8-3.6V	1	100	100	mA
	ESP32	ESP32WROOM32	3-3.6V	1	150	150	mA
						0	mA
	Subtotal					1200	mA
	Safety Margin					25%
	Total Current Required on +3.3V Rail					1500	mA
c1. Regulator or Source Choice	+3.3V Switching Regulator	LM2575	4.75V-40V	3.3	1000	3300	mA
	Total Remaining Current Available on +3.3V Rail					1800	mA
C. For each power rail above, select a specific voltage regulator using the same process as for major component selection. Confirm that the Total Remaining Current Available on each rail above is not negative.
D. Select a specific external power source (wall supply or battery) for your system, and confirm that it can supply all of the regulators for all of the power rails simultaneously. If you need multiple power sources, list each separately below and indicate which regulators will be connected to each supply. Confirm that the Total Remaining Current Available on each power source below is not negative.
External Power Source 1	Component Name	Part Number	“Supply
Voltage
Range”	Output Voltage	“Absolute
Maximum
Current (mA)”	“Total
Current
(mA)”	Unit
Power Source 1 Selection	Plug-in Wall Supply	WSU050-4000	90 ~ 264 VAC	5V	4000	4000	mA
Power Rails Connected to External Power Source 1
	+3.3V Switching Regulator	LM2575	4.75V-40V	3.3	1000	3300	mA
	Motor Driver	IFX9201SGAUMA1	5V-50V	5V	500	500
	Total Remaining Current Available on External Power Source 1					200	mA
E. Calculate Battery Life (if applicable). For each battery, also check the worst-case lifetime of the battery by indicating the capacity in mAh.
	Component Name	Part Number	“Supply
Voltage
Range”		“Capacity
(mAh)”	“Required
By
Regulators”
	N/A	N/A	N/A	N/A	N/A	N/A
					Battery Life	N/A	hours
Notes
External Supply Voltage should be determined by the dropout voltage for highest-voltage regulator (e.g., +14V for a +12V regulator).
If you have multiple units in your design (e.g., a base unit and remote unit) then you need a separate power budget for each unit