400Hz Capability on the ADE9430 and AD chips for DC measurements

The ADE9430 is designed for a fundamental of 50 or 60hz. The software lib was designed for 50 or 60 hz and may not work at 400Hz. 

The ADE7978/ade7933 is in production not sure where you read not recommended for new designs. there is a note that new options may be available but that does not mean the part is not recommended for new designs. 

ADE9430 does not need ADE9178. The ADE9178 is designed to be used with ADE9113/9112 and targets the EV charger market. 

Most parts will function at 400hz but anything that depends on the fundamental will not work unless in the listed operating range. 

What are the features you are looking for? 

anything that needs fundamental IRMS VRMS POWER  ENERGIES will not work at 400HZ. 

DC metering ADE9113 ADE9178 is a good combination. What is your DC voltage? Neet to be aware of isolation and operating voltage. 

Dave

Hello Dave,

Thank you for getting back to me.

S: The ADE7978/ADE7933 is currently in production. I'm not sure where you read that it is not recommended for new designs. There is a note mentioning that new options may be available, but that does not imply the part is not recommended for new designs.

A: I understand it is in production. However, if I were to build a new design without knowing when I might get a chance to improve it, and if the system might be in production for several years, I would prefer to go with a component that is explicitly recommended for new designs, as stated on the AD website.

S: What specific features are you looking for?

A: For the 400Hz side, I just need accurate measurements of current, voltage, and frequency. I could always build a library for the 400Hz side of the project, although 60Hz is really the primary target.

S: Anything that requires fundamental IRMS, VRMS, power, and energies will not work at 400Hz.

A: Understood. I would have to build out the library if I were interested in obtaining accurate measurements for the features you've listed at 400Hz.

S: For DC metering, the ADE9113 and ADE9178 are a good combination. What is your DC voltage range? You need to be aware of isolation and operating voltage.

A: I need a range of 12-650VDC.

As long as I'm comfortable with building a library, I can use the ADE9430 for my design.

Thank you in advance,
Joe 

Hi Joe, 

The ADE9113 is 8.3mm creepage and material group II package. If you're talking reinforced isolation in pollution degree 2, the ADE9113 will be limited to 579 VDC by the package. You might want to consider the ADE9103 instead and implement the isolation barrier elsewhere (isolated fieldbus port, isolated SPI bus...). Supported working voltage may differ if you need only basic insulation or operating in a different pollution degree, just pointing out something to consider.

Regards,

Jason

Thank you for your reply, jnaso.

I was reviewing your response and started looking at the ADE9103. I noticed that it doesn't have the isolation found in the ADE9113. However, I found an AD isolation chip, the ADBMS6821. When considering the power isolation required, I wanted to understand how the ADE9103 handles ESD states, which are rated at +/- 4000 V (class 3A). Yet, the Absolute Maximum Rating for pins V1p and V1M to DGND is listed as +/- 2.0V. I must be misreading the datasheet. Could you please point me in the right direction, to figure out the max voltage rating of the pins.

I have figured this part out, when looking at the eval circuit they do have a voltage drop circuit on the voltage line to get the voltage in the range of +/- 2Vs.

Thank you for all that have helped with this,
Joe

ADE7978/ADE7933 will be around for a long time it is in production as the website says. 

If you need Irms Vrms and period I think you are fine using the IRMS VRMS and period register in the ADE9430 at 400 hz

was this in reply to your other post?

ez.analog.com/.../544126