Hi Mulin,
Sorry for this delay,
PFA
And my application is to charge the battery with 12V,6A input, to generate 18.8V,6A and communicate with SMBus to control the charging.
Regards,
Tagore.
4S6P BATTERY CHARGER (100W)_V0.1_SCH.pdf
Part Number: BQ25703A Other Parts Discussed in Thread: CSD17578Q3A We encountered a problem of BQ25703A during debugging. After the TYPEC_5V was powered, the output of VSYS_6V6_8V4 was not normal.
When testing, it was found that the REGN was sometimes…
Hi Nick,
The two FETs that you named are very similar, so it should be fine to switch from the CSD17551Q3A to the CSD17579Q3A.
However, I'm not sure if this will improve the power consumption. The CSD17579Q3A has lower Qg, but higher Rdson. Therefore…
Ok, thanks, we have done the schematic review and have a few questions. Could we have comments on the following?
1. C24 and C35 in our design is currently 33uF ceramic cap. The recommendation was 33uF tantalum. Because of space we used 1206 package…
hi Roberto here is the schematic below，and should you have any suggestions, please advise. thanks alot.
sch_ucc28740_double100w.pdf
p1、PFC converter p2、flyback converter p3、Dual-Port PD
Hi Aaron,
Anytime VGS exceeds the abs max rating of 10V, the gate oxide can be damaged. This can lead to a hard failure if the voltage is high enough or a cumulative failure if the device is exposed to multiple overvoltage events at lower voltages. Did…
Hi Mo,
The CSD17578Q3A is still recommended.
The CSD17551Q3A was chosen in the EVM schematic because it can support a max drain-to-source voltage of 30 V, a max gate-to-source voltage of +/- 20 V, and a max drain current of 12 A at Ta = 25 °C. This…
I found the culprit.. the mosfet HIDRV_1 was shorted across drain and source. Using a CSD17578Q3A Replaced it, and no more click, plus the system now works as it should. Took a look at the gate drive to this device and its partner HIDRV_2, and I see …
Part Number: OPT8241 Other Parts Discussed in Thread: SN74LVC2T45 , , TPS2559 , CSD17578Q3A , CSD16301Q2 I'll design our laser driver circuit. I plan to design shunt switching with four laser.
Used laser's operating current is ~3.6A and operating voltage…
