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5.2 EQUIPMENT SETUP
5.2.1 Initial EVM Jumper and Switch Settings
Figure 4 is the basic test set up recommended for evaluating the TPS40100EVM-001. EVM is shipped with the
following in the default position:
1. Enable switch (S1) open across pins 2&3. This is the enable position.
2. Tracking enable jumper (J8) has shunt positioned across pins 1&2 disabling the tracking feature.
3. Tracking engage switch (S2) open across pins 2&3. This enables the tracking ramp to charge.
4. Remote sense jumpers (J6 and J7) have shunts positioned across pins 2&3 enabling local
connector sensing.
5. Margin shunts positioned in the margin disable position.
5.2.2 Procedure
1. Working at an ESD workstation, make sure that any wrist straps, bootstraps or mats are
connected referencing the user to earth ground before power is applied to the EVM. Electrostatic
smock and safety glasses should also be worn.
2. Prior to connecting the DC input source, VIN, it is advisable to limit the source current to 5.0A
maximum. Make sure VIN is initially set to 0V and connected as shown in Figure 4.
3. Connect an ammeter between the positive output of the input supply and the positive input of the
EVM. (J2, Pin 1)
4. Connect voltmeter Voltmeter #1 to TP3 and TP4 as shown in Figure 2.1. These are the EVM
input supply monitoring points.
5. Connect LOAD1 to J5 as shown in Figure 2.1. Set LOAD1 to constant current mode to sink 0Adc
before input voltage is applied.
6. Connect voltmeter #2 across TP13 and TP14 as shown in Figure 2.1. This is the EVM output
supply monitoring point. Note: this configuration is local sensing.
7. Remove oscilloscope probe jacket and position probe as shown below in Figure 3. TP17 and
TP18 are implemented to provide the user with the means to achieve good noise immune
measurements of ripple voltage and transient response.
Figure 3: Probe position for ripple measurement
8. Place Fan as shown in Figure 4 and turn on, making sure air is flowing across the EVM.
Summary of Contents for TPS40100
Page 4: ...4 4 SCHEMATIC Figure 1 TPS40100EVM 001 Power Stage Control Schematic ...
Page 5: ...5 Figure 2 TPS40100EVM 001 Margin Control Component values are for reference only ...
Page 16: ...16 Iout 10A Figure 11 Power on from enable ...
Page 24: ...24 Figure 19 TPS40100EVM 001 Component Placement Viewed from Top ...
Page 25: ...25 Figure 20 TPS40100EVM 001 Silkscreen Viewed from Top ...
Page 26: ...26 Figure 21 TPS40100EVM 001 Top Copper Viewed from Top ...
Page 27: ...27 Figure 22 TPS40100EVM 001 Layer 2 X Ray View from Top ...
Page 28: ...28 Figure 23 TPS40100EVM 001 Layer 3 X Ray View from Top ...