Title:
ISOLATED DC/DC CONVERTER, PRIMARY SIDE CONTROLLER THEREOF, POWER ADAPTER, AND ELECTRONIC EQUIPMENT
Document Type and Number:
Japanese Patent JP2019068684
Kind Code:
A
Abstract:
To provide a DC/DC converter with further reduced power consumption.SOLUTION: A feedback signal generation circuit 540 inverts the polarity of an output detection signal Iindicating the state of the output of a DC/DC converter 200 and multiplies the signal by a first gain to generate a feedback signal V. A burst controller 560 compares the feedback signal Vwith a threshold value Vand generates a burst signal Saccording to the comparison result. A pulse modulator 510 generates a control pulse Shaving a duty ratio according to the feedback signal V. A driver 530 drives a switching transistor M1 according to the control pulse S. Further, according to the burst signal S, the switching of the switching transistor M1 is made intermittent.SELECTED DRAWING: Figure 4
More Like This:
| JP2008533960 | Switched mode power converter and its operation method |
| JPS5153218 | DCCDC KONBAATAKAIRO |
Inventors:
SATO YOSHINORI
Application Number:
JP2017194451A
Publication Date:
April 25, 2019
Filing Date:
October 04, 2017
Export Citation:
Assignee:
ROHM CO LTD
International Classes:
H02M3/28
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki