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# How to Use PFC for 110 V Voltage System

Level 3
Level 3

Hi i update ISD V1.3.0.
- IMC102T-F064

But It is still difficult to use at 110v.
As shown in the picture below, the maximum input voltage range is 220 to 313.46, so it cannot be set.
Is there any other way?

Thank you

1 Solution

# 回复： How to Use PFC for 110 V Voltage System

Moderator
Moderator

The root cause is that in the configuration wizard, the target DC voltage must be > 1.414 * Max_ Vac.

Refer to the PFC diagram, If we can modify Vout_Ref, we should change the Vout.  We can monitor the VAC, write a script code. Set different Vout_Ref values based on different VAC.

7 Replies

# 回复： How to Use PFC for 110 V Voltage System

Moderator
Moderator

This error indicates that there is an issue with your voltage parameters.

For PFC output voltage, it should  be >= √2  * MAX VAC.

When maxVac set 220V, the PFC output voltage should be greater than 311V.

The parameter max Vac is not used for protection, it should be a normal working input voltage.

# 回复： How to Use PFC for 110 V Voltage System

Level 3
Level 3

HI  @LinGuohui
I understand what you mean.
However, in the United States, we are planning to use 110V instead of 220V.
Therefore, the maximum input voltage must be less than 220 volts.
For PFC, we would like to target 190V.

I think the minimum voltage range in the picture should be lower.

Please check the questions I asked in the past and refer to them.

# 回复： How to Use PFC for 110 V Voltage System

Level 3
Level 3

@LinGuohui
I upgraded my project package, and it's available.

# 回复： How to Use PFC for 110 V Voltage System

Moderator
Moderator

PFC is actually a boost circuit, which means that the output voltage cannot be less than the input!

So if the max AC input is 220Vrms , The PFC output cannot <= √2  * 220  V.

I don't think this setting is incorrect.

# 回复： How to Use PFC for 110 V Voltage System

Level 3
Level 3

You are right.
But I always said it.
It will be used at 110Vrms.

And I set it up as shown in the picture.

Therefore, I am operating the product using PFC at 110Vrms.

# 回复： How to Use PFC for 110 V Voltage System

Moderator
Moderator

The root cause is that in the configuration wizard, the target DC voltage must be > 1.414 * Max_ Vac.

Refer to the PFC diagram, If we can modify Vout_Ref, we should change the Vout.  We can monitor the VAC, write a script code. Set different Vout_Ref values based on different VAC.

# 回复： How to Use PFC for 110 V Voltage System

Level 3
Level 3

Thank you so much your replays.

Have a good day 🙂