When EN is low, the IC will not switch and so cannot boost the voltage higher than Vin. So, I cannot explain why SW was higher than Vin when EN was low.
Regarding load disconnect, a FET in series with Rs may work but it needs to be a fast switching…
I would not feel comfortable recommending that you use the TPS61160 for your application. If you recalculate your maximum allowable output current with reasonable variations in each variable, you can not achieve your desired output current. I suggest…
I may have misunderstood your original question. Can you explain to me, again, how the IC will be powered? What is the battery voltage range? Will it tie to the IC? The TPS61166 has an internal regulator that steps down the voltage from a multi-cell battery…
Part Number: TPS61165 Hi TI LED Driver Team,
I'm using TPS61165 for instrument cluster backlight driver and my schematic is as below:
And I'm using 5kHz to dimming the brightness, but when I decrease the PWM duty cycle to near 0.2%, it will enter…
Regarding 1, like all of our boost converters, the TPS61175 has overcurrent protection circuitry that will protect the IC. If the load is purely capacitive, then the converter should eventually charge the capacitor. If the load has a resistive component…
Other Parts Discussed in Thread: TPS61161 Dear Support.
I've developed a TFT backlight driver, using the TPS61161 driver. Everything is working fine.
Now I'm testing a LED failure (open led condition), and I've found a very high rise in Diode temperature…
Hi Attila,
This is a little difficult for me to give you the estimated data since I have no the corresponding EVM for bench test at present.
But, TI provides the efficiency vs. current curve based on the EVM under the conditions that VIN=5V/VOUT=9…
Hello Tansel,
The UAF42 topology does not accommodate differential operation. I suggest using a multiple-feedback (MFB) active filter which lends itself nicely to a differential input, or fully differential filter. I wrote an article for TI's AAJ some…
Hello,
The UCC3806 is a dual output controller though it can be used in a flyback where only one of the outputs are used to drive the switch it might be better to choose a single output controller. Look at page 46 of the attached under General Purpose…
