Hi,
Is it possible to disable dead time in ADuM4221?
For example, UCC21521DW is disabled by DT connection with power.
Couldn't find exact information in the datasheet. Please help
Best Regards,
Vitaly
Hi,
Is it possible to disable dead time in ADuM4221?
For example, UCC21521DW is disabled by DT connection with power.
Couldn't find exact information in the datasheet. Please help
Best Regards,
Vitaly
Hi ,
Could you tell me this is the calculation for Power dissipation? Datasheet the calculation is not clear.
Data sheet states :
PDISS_ADuM4221 = PDISS × 0.5(RDSON_P/(RGON + RDSON_P) + 0.5(RDSON_N/(RGOFF + RDSON_N))
Should it be
PDISS_ADuM4221…
Hello!
I'm using the ADuM4221 as a gate-drive for a synchronous buck converter. It's implemented according to the bootsrapped Half Bridge Operation Circuit found in Figure 38 in its datasheet (ADuM4221/ADuM4221-1/ADuM4221-2 (Rev. B) (analog.com…
Hello
Can`t find ADUM4221 LTspice model on product page.
Only IBIS available.
-- Regards,
Victor
Hi RSchnell
I have another question about this.
If there is no contamination, how much absolute voltage does the device itself have?
I don't know the coordinates of Die in the device and I don't know how much withstand voltage it has, but can it be used…
Hello
We directly replace UCC21540 to ADUM4221 as below schematics. We remove DT pin decoupling cap. The application is server power. Bit while test, the server power will boot normally at no load. But have over 0.2A load, ADUM4221 will shutdown the…
Hi,
I want to use the ADUM4221 to control a H-Bridge with V_Bus = 110 V and V_DDB = 15 V with bootstrapping circuit as in the attached incomplete schematic.
Now I am not sure if the voltage of V_DDA = 125 V refer to GND_SEC is ok, because you write in…
Hello,
As pictured, the 1.2 kΩ resistance will be in the way of the decoupling capacitance, meaning that as the part needs more current, the 5 V supply will droop going into the ADuM4221. It is possible to put a resistor to the left of the decoupling…
Hello,
The ADuM4221 cannot have any decoupling capacitance on the DT pin. It is designed to not need it, and capacitance will affect the DT operation.
Thanks,
RSchnell