Other Parts Discussed in Thread: TPS60130 Team,
If a TPS60130 is placed directly across an LED sourcing greater than 300mA will the charge pump Vout just sag down or shut down due to over current?
Thank you,
Ben
Part Number: LM2750 Other Parts Discussed in Thread: TPS60130 Dear *,
can we generate 3.6V from 3.3V with LM2750-ADJ? Or do you recommend a different Charge pump inductor less IC?
Best Regards,
David.
The charge pump itself will not be damaged. But it will not provide 500 mA (see figure 3 of the datasheet).
Even the strongest charge pump (TPS60130) does not support more than 300 mA. You'd have to parallel multiple devices, or use a boost converter…
Per datasheet Figure 8, maximum output current over temperature, the TPS60151 cannot provide 100mA at Vin=2.7V once the temperature rise above ambient of 25C. You might consider moving to larger charge pump such as the TPS60110 or TPS60130 or an inductive…
You are correct that the datasheet contains no information about this as it is assumed to be known to be connected to GND. Thus, Richard answered this question and now all know. The EVM shows the connection to ground in its schematic: http://www.ti.com…
power quick search returns 39 options for charge pumps and dc/dc switching converters. More option if you want a controller w/ external FETs or a module. I would probably go with a converter or charge pump. So it will depend on your other care abouts…
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…
Siyu,
I think the toggle flip-flop in the block diagram on page one of the spec should have let you know that the max you will get with this device is 50% duty.
Go to page 43 and 44 of the attached and select a more suitable part.
