Title:
SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2016135029
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a switching power supply device capable of maintaining stable output by securing a phase margin and a gain margin and ensuring responsiveness even if a load fluctuation and an input fluctuation are intense.SOLUTION: The switching power supply device comprises: selection parts 13 and 14 for selecting a current value or a voltage value based on a relation between current and voltage values that are detected by a current detection part 11 and a voltage detection part 12, and target current and voltage values; a deviation calculation part 18 for calculating a deviation between the selected current value (or the selected voltage value) and the target current value (or the target voltage value); and a PID calculation part 15 for calculating a manipulated variable by PID calculation based on the calculated deviation. In accordance with a PWM signal based on the manipulated variable that is calculated by the PID calculation part 15, the switching power supply device switches and outputs input power. The switching power supply device also comprises a gain change part (15) for individually changing a P gain, an I gain and a D gain relating to the PID calculation based on the current value (or the voltage value) that is selected by the selection parts 13 and 14.SELECTED DRAWING: Figure 2
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Inventors:
HASEGAWA TAKASHI
Application Number:
JP2015008793A
Publication Date:
July 25, 2016
Filing Date:
January 20, 2015
Export Citation:
Assignee:
AUTO NETWORK GIJUTSU KENKYUSHO KK
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
H02M3/00
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono
Nobuo Kono