TPS61099: Output current capability

Hi Bart,

From Figure 4 of the datasheet it seems your load is on the borderline. This needs to be confirmed by our boost converter experts who are currently on annual vacation and will be back in a week or two. I am sending a notice to them.

Thanks,
Youhao Xi, BCS Applications Engineering

Hi Bart::

According to the test we did before in our lab, it seems Vout still in the normal range of the datasheet(3.53V min, 3.67V max, with PWM mode).

And please realize that the test result is related the circuit design and test environment, just for reference.

Iout A	Temp C	Vin V	Vout V	Efficiency
0.45	85.00	2.40	3.57	84.17%
0.45	85.00	2.20	3.56	80.48%
0.45	-40.00	2.40	3.57	91.12%
0.45	-40.00	2.20	3.57	89.59%
0.45	25.00	2.40	3.57	87.70%
0.45	25.00	2.20	3.56	85.24%
0.40	85.00	2.40	3.57	85.88%
0.40	85.00	2.20	3.57	83.04%
0.40	-40.00	2.40	3.58	91.81%
0.40	-40.00	2.20	3.57	90.60%
0.40	25.00	2.40	3.57	88.86%
0.40	25.00	2.20	3.57	86.90%

Hi Bart：
As the reminder form my teammate. We found the calculation result of the current capability is exceeded the spec in datasheet.
The minimum peak current limit is 0.5A if the Vin<2.5. So there is a risk to support that current by calculation.

The test result is the bench test based on a few samples. For the reliability concern, the value of the datasheet should be followed.

Sorry that I forget to consider this last time. My apologies.