2 TMAG5115EVM Hardware
The TMAG5115EVM is a simple to use platform for evaluating the main features and performance of the
TMAG5115. The EVM features a couple of methods of device evaluation, the first being quick visual feedback to
the user in the form of LED indication. When the device's B
OP
and B
RP
thresholds are crossed, their respective
LED lights turn on and off. An alternative way of evaluating the TMAG5115 is by using the EVM to commutate
a brushless direct current (BLDC) motor. The TMAG5115EVM follows a standard form factor for the Hall-effect
sensor boards found in various NEMA17 BLDC motors. This means the EVM can be used as a direct drop-in
replacement for these boards and can be used to evaluate device performance in this way.
Features:
• Standard sensor control board dimensions for drop-in replacement in most NEMA17 42-mm BLDC motors
• Includes a handheld D3X8 magnet for manual testing
• Provides LED feedback to quickly determine the output state from the TMAG5115
3 EVM Operation
The following instructions are to set up and use the TMAG5115EVM:
3.1 Quick Start Setup
1. Power up the EVM using a variable power supply:
a. Set the power supply voltage to the desired setting between 3 V and 12 V. Do not turn on the power yet.
b. Connect the power supply V- terminal to the black GND wire connected to the EVM.
c. Connect the power supply V+ terminal to the red VCC wire connected to the EVM.
d. Turn on the power supply
2. At power up, the device default state is high and the LEDs stay in the off state. Place the handheld D3X8
magnet over one of the three TMAG5115 devices found on the EVM. Depending on the polarity of the
magnet, you may see the LED turn on or remain in the off state.
3. Rotate the magnet to the opposite orientation. If the threshold is met, the device should have the opposing
reaction than it did in the previous step. A South field over the B
OP
will turn on the LED while a North field
less than the B
RP
threshold will turn off the LED. See
for the magnetic response of a Hall-effect
latch.
B
south
north
OUT
0 mT
B
OP
0V
V
CC
B
RP
B
HYS
Figure 3-1. Hall Latch Output
TMAG5115EVM Hardware
SBAU410 – OCTOBER 2022
TMAG5115 Evaluation Module
3
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