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Class Information
Number: 363/21.13
Name: Electric power conversion systems > Current conversion > Including d.c.-a.c.-d.c. converter > Having transistorized inverter > Single-ended, separately-driven type > With automatic control of the magnitude of output voltage or current > For flyback-type converter > Having digital logic
Description: Subject matter wherein the switch control means includes means to process coded data that is in a discrete, discontinuous (i.e., digital) form.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7394670 |
Switching power source |
Jul. 1, 2008 |
| 7375471 |
Charging circuit |
May. 20, 2008 |
| 7362592 |
Switching control circuit for primary-side controlled power converters |
Apr. 22, 2008 |
| 7362593 |
Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply |
Apr. 22, 2008 |
| 7352595 |
Primary-side controlled switching regulator |
Apr. 1, 2008 |
| 7349229 |
Causal sampling circuit for measuring reflected voltage and demagnetizing time of transformer |
Mar. 25, 2008 |
| 7345893 |
Boost converter with magnetically coupled and uncoupled inductors |
Mar. 18, 2008 |
| 7342365 |
Systems and methods for reducing input current in photoflash chargers |
Mar. 11, 2008 |
| RE39933 |
Power conversion integrated circuit and method for programming |
Dec. 4, 2007 |
| 7272025 |
Method and apparatus to control either a regulated or an unregulated output of a switching power supply |
Sep. 18, 2007 |
| 7259525 |
High efficiency switching LED driver |
Aug. 21, 2007 |
| 7259972 |
Primary-side-control power converter having a switching controller using frequency hopping and voltage and current control loops |
Aug. 21, 2007 |
| 7242596 |
Control method for switching power supply circuit |
Jul. 10, 2007 |
| 7233504 |
Method and apparatus for digital control of a switching regulator |
Jun. 19, 2007 |
| 7224129 |
Discharge lamp drive apparatus and liquid crystal display apparatus |
May. 29, 2007 |
| 7161816 |
System and method for input current shaping in a power converter |
Jan. 9, 2007 |
| 7151681 |
Multiple-sampling circuit for measuring reflected voltage and discharge time of a transformer |
Dec. 19, 2006 |
| 7149098 |
Over-power protection apparatus with programmable over-current threshold |
Dec. 12, 2006 |
| 7133300 |
Over-voltage protection circuit for power converter |
Nov. 7, 2006 |
| 7075801 |
Dc converter |
Jul. 11, 2006 |
| 7061780 |
Switching control circuit with variable switching frequency for primary-side-controlled power converters |
Jun. 13, 2006 |
| 7054170 |
Power-mode controlled power converter |
May. 30, 2006 |
| 7035119 |
Switching power source device |
Apr. 25, 2006 |
| 7016204 |
Close-loop PWM controller for primary-side controlled power converters |
Mar. 21, 2006 |
| 6944034 |
System and method for input current shaping in a power converter |
Sep. 13, 2005 |
| 6900995 |
PWM power converter controlled by transistion detection of a comparator error signal |
May. 31, 2005 |
| 6894911 |
Method of driving a power converter by using a power pulse and a sense pulse |
May. 17, 2005 |
| 6882552 |
Power converter driven by power pulse and sense pulse |
Apr. 19, 2005 |
| 6850422 |
Converter circuit with controllable switching means utilizing a switching frequency window |
Feb. 1, 2005 |
| 6757182 |
Power supply system with secondary control circuitry providing power-based feedback |
Jun. 29, 2004 |
| 6671189 |
Power converter having primary and secondary side switches |
Dec. 30, 2003 |
| 6608769 |
Switched mode power supply with a device for limiting the output voltage |
Aug. 19, 2003 |
| 6594161 |
Power converter having independent primary and secondary switches |
Jul. 15, 2003 |
| 6563718 |
Capacitively coupled power converter |
May. 13, 2003 |
| 6515874 |
Clocked power supply |
Feb. 4, 2003 |
| 6456511 |
Start-up circuit for flyback converter having secondary pulse width modulation |
Sep. 24, 2002 |
| 6400583 |
Flyback converter with synchronous rectifying |
Jun. 4, 2002 |
| 6233162 |
Compounded power factor corrected universal display monitor power supply |
May. 15, 2001 |
| 6226190 |
Off-line converter with digital control |
May. 1, 2001 |
| 6134123 |
Switch-mode DC power supply, monolithic IC and hybrid IC for the same |
Oct. 17, 2000 |
| 6118675 |
Method and apparatus for controlling power transfer in a flyback converter by modulating the power switch off time during transient conditions |
Sep. 12, 2000 |
| 6115266 |
Switching power source with a digital control circuit to maintain a constant DC output signal |
Sep. 5, 2000 |
| 6078510 |
Wholly integrated switch-on control loop of a high voltage power transistor of a quasi resonant flyback converter |
Jun. 20, 2000 |
| 6061257 |
Wholly integrated protection from the effects of a short circuit of the output of a flyback converter |
May. 9, 2000 |
| 6049471 |
Controller for pulse width modulation circuit using AC sine wave from DC input signal |
Apr. 11, 2000 |
| 6005789 |
Circuit for inhibiting transition phenomenon in power supply unit |
Dec. 21, 1999 |
| 5986897 |
Switched-mode power supply having a circuit arrangement for turning the switching device when a voltage on the switching device is at a minimum |
Nov. 16, 1999 |
| 5933049 |
Power-supply circuit with a transformer and an on/off switch at the secondary side of the transformer |
Aug. 3, 1999 |
| 5910887 |
Apparatus for controlling switching frequency of SMPS transformer for video display appliance |
Jun. 8, 1999 |
| 5892672 |
Low loss digitally controlled voltage converter |
Apr. 6, 1999 |
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