Imported from GitHub: oresat/oresat-adcs-hardware · commit 9c4d52f · license GPL-2.0

Description

Controller PCB for OreSat reaction wheels, magnetorquers, IMU, and magnetometers

README

System Block	Hardware Chosen and Reasons Why
Buck Boost Converter	TPS63070 We chose this part because of oresat heritage. This component is being used elsewhere in oresat and we were recommended to use it. It is a buck-boost converter that can take a wide range of input voltage. Overall, it is a robust component.
BLDC Motor	MakerFire D1104 7500KV This motor was chosen for its operating range and torque output. The motor selection should be reevaluated if it is decided to move to a 7.4V nominal battery bank voltage
BLDC Motor Driver	STSPIN 230 We chose this component for a number of reasons. Namely; - Satisfies thermal and voltage constraints. - Small form-factor. - Half-H-Bridge control over each phase of the BLDC. - Easy interface with STM32F0. - Full Control over Phase Output. - Minimal External Components.
Encoder	AS5047P The AS5047P utilizes an array of Hall effect sensors and a diametric magnet to provide a precise position reading. The sensor provides sufficient precision and provides output data in multiple convenient forms. See the datasheet for details.
MCU F0	STM32F042K6 We chose this MCU because of oresat heritage. It is being used elsewhere in oresat. This MCU has a small form factor and is power efficient.
CAN Transceiver	TCAN330 We were told to use this component because of oresat design heritage. The rest of oresat is using this CAN transceiver.
Brushed DC Motor Driver	STSPIN250 We chose this component for a number of reasons. Namely: - Satisfy thermal and voltage constraints - Small package size - Full H-Bridge control - Basic Magnitude and Phase control - Minimal External Components
Magnetorquer	Still to be determined. The magnetorquer will essentially be an inductor most likely in a flat spiral orientation to save volume inside oresat.

Major Hardware Operating parameters

Part #	Parameter	Range	Units
TPS63070
	Input Voltage	2.0 - 16	Volts
	Output Voltage	2.5 - 9	Volts
	Boost Mode Max	2	Amps
	Buck Mode Max	2	Amps
	Storage Temperature	-65 - 150	°C
	Operating Temperature	-40 - 125	°C
STSPIN230
	Supply Volage	1.8 - 10	Volts
	Logic High	1.6 - 5.0	Volts
	Logic Low	-0.3 - 0.6	Volts
	Output Max	12	Volts
	Ouput RMS/Bridge	1.3	Amps
	Storage Temperature	-55 - 150	°C
	Operating Temperature	-40 - 150	°C
STSPIN250
	Supply Volage	1.8 - 11	Volts
	Logic High	1.6 - 5.5	Volts
	Logic Low	-0.3 - 0.6	Volts
	Output Max	12	Volts
	Ouput RMS/Bridge	2.6	Amps
	Storage Temperature	-55 - 150	°C
	Operating Temperature	-40 - 150	°C
AS45047P
	Operating Voltage	3.2 - 3.4	Volts
	Operation Current	4 mA	Current
	Operating Temperature	-40 - 125	°C
	Storage Temperature	-55 - 150	°C