A new resonant DC-DC converter: Pe17 circuit

[Atal]

I hereby present my newly invented resonant DC-DC converter circuit, named 'Pe17 circuit'.

Features:
* Resonant half/full bridge inverter, utilizing ZVS operation.
* Constant frequency switching.
* Wide input/output voltage range operation capability, suitable also for EV battery chargers.
* Higher efficiency and power density.

Brief intro:

For more details, see US patent - US11139734:

Attached:
Presentation providing comparison between the Pe17 circuit and the LLC resonant circuit.
LTSpice simulation files for evaluation.

 

[Atal]

3% load operation (burst mode)

 

[Atal]

Voltage of the triangle wave oscillator, output voltage of the error amplifier and resultant PWM signal.

 

[Atal]

Internal voltages of the SR control subcircuit and the gate drive signal.

 

[Atal]

Startup and VCC subcircuits.

 

[D.A.(Tony)Stewart]

I hereby present my newly invented resonant DC-DC converter circuit, named 'Pe17 circuit'.

other than a few spelling errors, nice performance & presentation. Expired patent why?

 

[Atal]

other than a few spelling errors, nice performance & presentation. Expired patent why?

The US patent has not expired. It is valid until 2038 (subject to maintenance fees).
Please see patent status at the USPTO website:

Patent Center

PatentCenter UI

patentcenter.uspto.gov

 

[D.A.(Tony)Stewart]

too many simulation errors

ERROR: Node M1:M1:42 is floating and connected to current source G:M1:M1S:OUT
ERROR: Node M2:M1:42 is floating and connected to current source G:M2:M1S:OUT
ERROR: Node M3:M1:23 is floating and connected to current source G:M3:M1:GS:OUT

 

[Atal]

too many simulation errors

ERROR: Node M1:M1:42 is floating and connected to current source G:M1:M1S:OUT
ERROR: Node M2:M1:42 is floating and connected to current source G:M2:M1S:OUT
ERROR: Node M3:M1:23 is floating and connected to current source G:M3:M1:GS:OUT

In settings, try the Alternate solver.

 

[D.A.(Tony)Stewart]

I hereby present my newly invented resonant DC-DC converter circuit, named 'Pe17 circuit'.

View attachment 178969

View attachment 178973

Features:
* Resonant half/full bridge inverter, utilizing ZVS operation.
* Constant frequency switching.
* Wide input/output voltage range operation capability, suitable also for EV battery chargers.
* Higher efficiency and power density.

Brief intro:

For more details, see US patent - US11139734:

Attached:
Presentation providing comparison between the Pe17 circuit and the LLC resonant circuit.
LTSpice simulation files for evaluation.

It would be useful to zip the libraries of parts not found in std library
and consider how to shrink the size of the schema so it is viewable without zoom.

The FETs need to provide a massive kick. Hope the force is endured.

I wonder what the EIRP is in the FM band.

 

[Atal]

It would be useful to zip the libraries of parts not found in std library
and consider how to shrink the size of the schema so it is viewable without zoom.

The FETs need to provide a massive kick. Hope the force is endured.

View attachment 187367


I wonder what the EIRP is in the FM band.

The preview simulation isn't suitable for determining an unsoft-started inrush primary current.
Increase loseless snubber capacitance across the SiCFETs to reduce turn-off losses and EMI.

 

[D.A.(Tony)Stewart]

TY.

I hereby present my newly invented resonant DC-DC converter circuit, named 'Pe17 circuit'.

Sorry but my updated library did not have your diodes. Can you zip those subs?
PSU-detailed.asc

 

[Atal]

Replace the original standard.dio file in the cmp folder with the one attached below.

 

[D.A.(Tony)Stewart]

Replace the original standard.dio file in the cmp folder with the one attached below.

Missing zener diodes for some reason
BSZ0920NS
BZX384B10
BZX384B12
BZX384B3V9
BZX384B68
BZX384B75
BZX384B9V1
lots of duplicate errors , I guess, from new version seeing same with Zener toleranced values

I see they were transferred to Vishay from Rohm or other and changed BZX84 to BZX384, so I'll dupe and mod in *.dio then edit sch to find each..
Now BAS516 et al missing

 

[D.A.(Tony)Stewart]

After Library imports, sorting and removing duplicates...

Preview works 500W out.

but I broke something on preview

No Gate Osc.
U4:vinput: Missing value, assumed 0V @ DC
??

 

[Atal]

After Library imports, sorting and removing duplicates...

Preview works 500W out.

but I broke something on preview

No Gate Osc.
U4:vinput: Missing value, assumed 0V @ DC
??

The zener diode D28 must be 3.9 V, not 9 V.
PWM comparator and error ampifier cannot stand voltages higher than 5 V.

 

[D.A.(Tony)Stewart]

I guess it is possible to use includes to prevent library omissions. I've only used LTspice this month.



Secondary and no load error x10.. Very nice Performance

Maybe it's faster to use something like Microcap-12 x64

Your GIF animation skills are amazing. What tools?

 

[Atal]

I guess it is possible to use includes to prevent library omissions. I've only used LTspice this month.



Secondary and no load error x10.. Very nice Performance
View attachment 187434




Maybe it's faster to use something like Microcap-12 x64

Your GIF animation skills are amazing. What tools?

Noticed from the detailed simulation waveform during no-load operation - feedback loop was unstable.
To fix it, set R42=4k, R40=100k, R60=1.5k, C11=6.8n, C50=1n and C68=39n.

Hypercam 2 and Virtualdub.

 

[D.A.(Tony)Stewart]

 

[Atal]

View attachment 187454

Yes, that is more consistent with the graphs of the grand schematic of post #17, whose RC compensation network is also ~60 µs.

 

[D.A.(Tony)Stewart]

Yes, that is more consistent with the graphs of the grand schematic of post #17, whose RC compensation network is also ~60 µs.

Still room for the improvement with 6% ripple Vpp