Hi Saga,
So far I have no better charge pump option to recommend to you, you could try boost converter to boost the voltage. How about LM5171? You could have a look at it anyway.
Part Number: DRV8718-Q1 Other Parts Discussed in Thread: LM2902B , LM2903B Tool/software: Hi Expert,
My customer use DRV8718-Q1 as 8 high side controller application. For some loads, it need 2 or 3 MOSFET in parallel, which means single DRV8718 drive…
Part Number: LM2776 Tool/software: The observed failure mode is that after some amount of time in the field (within a few days), the charge pump is no longer able to output -5V and instead outputs 0 to about -1.5V while getting quite hot. The IC is being…
Hello Xuejun,
xuejun liu said: My question is if the Vin=14V & Vsys=13.5V, Whether the buck circuit still working?
Your original question did not mention 13.5V Vsys.
This is a buck-boost charger, so the charger will be able to support an output…
Hello Andrew,
Andrew Su said: 1. although BQ25980 is a flash charger IC, but it actually works like a 2:1 buck converter.
The BQ25980 does not regulate charge current due to the nature of the switch cap topology. Rather, charge current is a function…
Part Number: PCM5101A-Q1 Tool/software: The datasheet does not mention what an appropriate range is for the nominally 2.2uF caps used on the VNEG and CAPM-CAPP pins. Would say a 4.7uF cap that derates to around 2.2uF under DC Bias be acceptable or is…
Part Number: DRV8876-Q1 Hi team,
When the charge pump is in these two fault conditions of CPUV and OCP, is the charge pump in the active state?
Thanks！
Part Number: TRS3253E Tool/software: Hi team,
Does switching frequency of the internal charge pump vary depending on load(data rate) like PFM?
Or is it fixed frequency operation?
Best regards,
Shota Mago
Hi Annie,
I do not yet have the specifics of how the internal gvdd for this device is generated, but believe it may be similar to the DRV8328 where the GVDD is generated from an internal LDO for certain supply voltages, and generated by the charge pump…
