13
Single unit tracking (Discharge).
Channel 1 (+3.3Vout)
Channel 4 (Tracking In).
Vin = 12V
Iout=10A
Figure 8: Single EVM tracking discharging ramp
To demonstrate multiple EVM (2 modules) tracking the following procedure must be followed to ensure proper
functionality. The second TPS40100 EVM should be configured to a different output voltage.
1. Shunt pins 2&3 of the Tracking Enable Jumper (J8) for both modules.
2. Connect J3 pin 1 of each EVM.
3. Connect TP16 of each EVM. This is the module to module test point. This allows either module to
be the control EVM via S2.
4. Tracking Engage Switch (S2) should be in the closed (shorting pins 2, 3) position on the control
EVMs.
5. Connect oscilloscope probe to the TP17 and 18 of both modules and pin 1 of J3 of one of the
modules. Modules should have a common input voltage and return.
6. Remote sense jumpers (J6&7) should have pins 2&3 shunted. Activating local output sensing.
7. Apply an input voltage of 10.8V to 13.2V.
8. Allow the SS voltage to reach 3.5V.
9. Open the control EVM Tracking Engage Switch (S2) (Opening pins 2, 3) and observe the
monitored points. (Both EVM outputs and the tracking in voltage. Output voltage should follow the
tracking in voltage until reaching the regulation point.
10. Close the Tracking Engage Switch (S2) (Shorting pins 2,3) of the control EVM and observe the
monitored points. (Both EVM outputs and the tracking in voltage) Falling waveforms should be
coincidal.
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 ...