HI,
I did some testing on TPS63900EVM. Following are the instruments that I used.
1. Keithley 6 1/2 Digit multimeter (DMM6500)
2. Keithley 2231A-30-3 DC power supply
Setting: S1.1 ON, S2.1, ON, S6.4 ON
I tested board with and without load on 101.4 ohm resistive load. Below are the test results. I am getting higher quiscent current. Please check and let me know what is the reason.
|
Input |
3.3V |
Input Voltage |
1.8V |
Input Voltage |
2.5V |
Input Voltage |
3V |
Input Voltage |
3.3V |
Input Voltage |
3.6V |
||||||||||
|
Resistive Load |
Output Voltage |
3.3V |
Output Voltage |
3.3V |
Output Voltage |
3.3V |
Output Voltage |
3.3V |
Output Voltage |
3.3V |
|||||||||||
|
101.4 Ohm |
Without Load |
With Load |
Without Load |
With Load |
Without Load |
With Load |
Without Load |
With Load |
Without Load |
With Load |
|||||||||||
Peak to Peak |
216.018 |
uA |
252 |
uA |
553 |
uA |
285.658 |
uA |
213.77 |
uA |
312.697 |
uA |
200.867 |
uA |
323.852 |
uA |
464.815 |
uA |
380.262 |
uA |
373.16 |
uA |
Average Current |
32.3407 |
mA |
11.13 |
uA |
66.45 |
mA |
12.126 |
uA |
46.5328 |
mA |
11.92 |
uA |
37.92 |
mA |
12.5867 |
uA |
33.528 |
mA |
11.913 |
uA |
30.6167 |
mA |
Standard Deviation |
49.4438 |
uA |
49.731 |
uA |
107.084 |
uA |
49.748 |
uA |
51.018 |
uA |
49.62 |
uA |
50.3 |
uA |
49.656 |
uA |
4.043 |
mA |
50.2019 |
uA |
62.068 |
uA |
Maximum |
0.03245 |
A |
0.00018 |
A |
0.06674 |
A |
0.0002 |
A |
0.04664 |
A |
0.00023 |
A |
0.03805 |
A |
0.00028 |
A |
0.04987 |
A |
0.0003 |
A |
0.03081 |
A |
Minimum |
0.03223 |
A |
-0.00009 |
A |
0.06619 |
A |
-0.00008 |
A |
0.04643 |
A |
-0.00008 |
A |
0.03783 |
A |
-0.00008 |
A |
-0.0009 |
A |
-0.00008 |
A |
0.0304 |
A |