- June 29th - added 3-phase 6-pack PFC with ST SiC MOSFETs in dq0. Three 1.2-kV SiC ST models have to be dropped in the <subcircuits> directory.

- June 18th - added an averaged model of the multiphase CM buck converter with its transient response version.

- June 4th - added a LCC gain curves generator which matches R. Steigerwald's paper from 1988.

- May 17th - added a three-level buck converter operated in voltage-mode control.

- May 17th - added a two-phase buck converter operated in current-mode control.

- April 22nd - just added the test files I built for evaluating the subcircuits performance used for all the models described in the book.

- April 20th - slightly corrected the bang-bang charge-controlled LLC model. This is a simplified model which, in some conditions, may not simulate correctly.
I have added a 240-W demo around an updated subcircuit which now includes an offset correction circuit. It keeps the sensed resonant voltage to an average value
of 2.5 V, ensuring a 50% duty ratio symmetry in the high-voltage bridge.

- April 10th - added a CM version of the active-clamped forward converter and corrected an incorrect node on the VM step-load version. The CM ACF is compensated
using the averaged model I have released.

- April 7th - added two new digital filters with delay lines: 1P1Z and 2P2Z types. Also did add two hybrid compensators, hybrid-digital, featuring a TL431
-based + opto providing the pole at the origin and sending the isolated error voltage to the primary side where the microcontroller will add the poles and
zeroes in a digital implementation (see https://powersimtof.com/Downloads/PPTs/PCIM%202023%20-%20Hybrid%20Analogue%20Regulation%20-%20Rev%200.16.pdf)

- March 14th - added a new circuit consisting of a 3-phase Vienna rectifier and a 25-kW DAB. Also added a LISN for simulating conducted EMI peaks. The circuit
is flyback UC384x - MOSFET - isolated - cbc - EMI Lisn.asc

- February 17th - added averaged models of active-clamped forward converters operated in VM and CM

- February 10th - added new Vienna rectifier examples with digital compensators using my PI models.

- January 30th - I am working on an article describing averaged simulations for the Vienna rectifier. For that purpose, I show how to build an averaged model for 
the single-phase T-type and this is what is posted today in the PFC sub-folder.

- January 20th - Added a full-wave rectifier with a constant power current source, ideal to measure the rms current in the bulk and the ripple amplitude. I also
did correct a small glitch in the 3-phase PFC dq stabilization macros where in which C2d was used in place of C2q in the q-loop C1q definition.

- January 9th - Added a linear regulator with ac and transient analysis

- January 7th 2026 - Added skip cycle capability to a UC384x controller.

- December 28th - Added several Zeta converters in averaged and cycle-by-cycle configurations. And that is all for 2025!

- December 19th - Added the 800-V version of the T-type single-phase PFC and the digital PI compensator was updated with the zero position calculation. Also
did add a simple dc sweep analysis to plot the LLC dc transfer characteristic versus Q values (LLC M curves versus Q.asc).

A happy holiday season to everyone!

- December 15th - corrections on the generic opamp, added an op-amp without parameters OPAMPTOFGEN with updates on some PFC schematics (if you find circuits where
this change was not propagated - you'll have an error popping up - please let me know and I'll correct the file).

- November 26th - added a multi-output flyback converter, averaged and cycle-by-cycle

- November 24th - added averaged constant on-time buck examples in ac and transient analyses. 
  Added programmable parameters for the generic op-amp while changing the clamp diodes models to simpler ones.
  Added a new CM controller with fully-adjustable frequency foldback with jitter. Check Flyback-CM-FF-isolated-cbc.asc

- November 14th - Added double-pulse tests folder under the PFC directory

- October 22nd - Added a series of SEPIC examples in VM and CM. Corrected a minor bug in the UC384x model (in the DRV block). Added ac compensated and transient
templates for the buck, boost and buck-boost in current-mode control.

- October 7th - Added a T-type single-phase PFC with or without sync rectification

- September 29th - Added a boost averaged model with the PWM switch and the CoPEC model, with Monte Carlo sweeps. Corrected VL=0.2 V instead of VL=2.5 V
in the circuits hosting a TL431 - thanks Fabian!

- September 21st - I have added a coupled-inductor current-mode forward converter in cycle-by-cycle and averaged mode. Also an averaged VM boost with CoPEC model.

- September 19th - I have reorganized the folders and did add a PFC section with single- and tri-phase examples

- September 7th - added two averaged Weinberg converters in VM and CM. There is also a cycle-by-cycle version of the VM with switches and MOSFETs.

- September 2nd - added 4 average-mode PFCs with inner current-loop built with an averaged model (ac and transient analyses)

- August 24th - added the SEPIC example from CoPEC using their VM auto-toggling model, added TL and TLV431 discrete models

- August 23rd - added a AHB flyback with a TL431 and a 250-W CM LLC eBike charger

- July 24th - added the simplest possible VM buck to show how to compensate it

- July 14th - Vive la France ! Added new averaged circuits for flyback, forward, SEPIC and Cuk

- July 7th 2025: added a new 3-level dc-ac inverter (48 V to 230 V ac).

- July 4th 2025: I have added several new examples of the frequency-response analyzer (FRA) used
to extract the control-to-output transfer functions of simple switching cells
operated in open-loop conditions. There is also a LLC swept in ac with the FRA.
The simulation time is a bit long but this is because I have added numerous data
points as I like granularity in Bode plots. Enjoy! Christophe.
