Title:
ＰＷＭ信号出力装置及びＰＷＭ信号出力方法
Document Type and Number:
Japanese Patent JP7052297
Kind Code:
B2
Abstract:
To provide a PWM signal output device capable of appropriately performing current limitation even when a PWM duty reaches 100%.SOLUTION: A current limit logic 4 of a PWM signal output device 1 activates a current limit signal to hold the state when a current supplied to a motor 8 exceeds a current limit threshold. When the current limit signal becomes active, an AND gate 22 of a pre-driver 3 blocks an output of a PWM signal from a motor control logic 2 to an inverter circuit 6. Then, the current limit logic 4 releases a state where he current limit signal is activated when an edge of the PWM signal is detected or the activated state continues for a fixed time or more.SELECTED DRAWING: Figure 1
Inventors:
Keishi Kishimoto
Application Number:
JP2017213791A
Publication Date:
April 12, 2022
Filing Date:
November 06, 2017
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H03K7/08; H02M7/48
Domestic Patent References:
| JP2013027231A | ||||
| JP2001161074A | ||||
| JP2003018858A | ||||
| JP2017022836A |
Foreign References:
| US20060064609 |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office
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