Dear customer support,
The datasheet for PAC5523A mentions the thermal characteristics and multiple parameters under this section. But what is the generic power dissipation for this IC / package while under continuous operation? Theta JA figure can only be utilized if we know the power dissipation of this chip.
Any input would help in making decision for use in application targeted for 125 deg C ambient operation.
Thanks in advance.
Hello,
Please refer to the page 67 of the PAC5523 datasheet. The power dissipation depends on different working conditions. Please check your current clock configurations and peripherals.
Heng
Hello Heng,
Thanks for reply and for pointing out to the current consumption. But it doesn’t reflect anything about the power dissipation of the chip.
Either the datasheet shares it or the user measures it once the first prototype is build. I was looking for an off-hand information to make a decision to go for the design. Our application shall continuously be running at 125 deg C. Any user who is currently at prototype stage can please share as to what is the surface temperature of the IC at the end of continuous run for an hour at an ambient of say, 25 deg C. Our application shall be running around 150 W motor, at 10000 RPM, at 28V, while PWM frequency to be approximately 30 kHz and in speed control loop.
Any guidance will help in making a correct decision for us.
Hello,
It depends on the current of different power PINs and peripherals, so it is hard to tell the detail power dissipation.
I suggest you contact Qorvo local support FAE, if you can’t find Qorvo local FAE contact info, you can send a request email to customer.support@qorvo.com.
Heng