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User19535
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100 sign-ins 25 replies posted First comment on blog

Dear Sir , 

I am studying this 3K3W_BIDI_PSFB-boost mode for our new UPS design. 

for the boost mode,  B is mainy for pre-change HV rail.  may I clarify some issue below? thanks.

(1)May I know how we can know whether B is charged done? 

(2)IF the output load is working and  SMPS_GUI shows connected successfully,  can we disconnect B?

(3) How's the power sequence of A & B?

 

 

 

User19535_0-1692236885896.png

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Alice_Wang
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First like received 50 sign-ins 5 solutions authored

(1)May I know how we can know it is charged done? 

When in Boost mode, should first select "boost mode", then supply HV with the part B (with diode) to 320V or so.

After boost works normally and HV is boosted to 400V, the part B can be disconnected. 

Because the diode exists, when HV is above part B voltage, it is not supplied any more.

(2)IF the output load is working and  SMPS_GUI shows connected successfully,  can we disconnect B?

Better wait until HV is above 400 or so.

(3) How's the power sequence of A & B?

First part B I think. 

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Alice_Wang
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First like received 50 sign-ins 5 solutions authored

你好,待咨询一下相关人员,稍后我们会尽快答复,谢谢。

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Alice_Wang
Moderator
Moderator
Moderator
First like received 50 sign-ins 5 solutions authored

(1)May I know how we can know it is charged done? 

When in Boost mode, should first select "boost mode", then supply HV with the part B (with diode) to 320V or so.

After boost works normally and HV is boosted to 400V, the part B can be disconnected. 

Because the diode exists, when HV is above part B voltage, it is not supplied any more.

(2)IF the output load is working and  SMPS_GUI shows connected successfully,  can we disconnect B?

Better wait until HV is above 400 or so.

(3) How's the power sequence of A & B?

First part B I think. 

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