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Patent Searching and Data


Title:
TRIANGULAR WAVE GENERATION CIRCUIT AND CLASS D AMPLIFIER
Document Type and Number:
Japanese Patent JP2013157847
Kind Code:
A
Abstract:

To provide a triangular wave generation circuit that outputs a triangular signal with reduced temporal variations in the peak value.

Sources of P channel transistors 11, 12 are connected to a high potential side power supply VDD, and sources of N channel transistors 21, 22 are grounded. P channel transistors 31, 32 are interposed between drains of the P channel transistors 11, 12 and triangular signal output nodes, respectively, N channel transistors 41, 42 are interposed between drains of the N channel transistors 21, 22 and the triangular signal output nodes, respectively, and the triangular signal output nodes are grounded via a capacitor 50. A timing generator 70 alternately repeats the control of selecting the P channel transistors 31 and 32 sequentially for a predetermined time and turning on the selected one, and the control of selecting the N channel transistors 41 and 42 sequentially for a predetermined time and turning on the selected one.


Inventors:
OKAMI TAKESHI
HIRANO KATSUYA
Application Number:
JP2012000017868
Publication Date:
August 15, 2013
Filing Date:
January 31, 2012
Export Citation:
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Assignee:
YAMAHA CORP
International Classes:
H03K4/06; H03F3/217; H03K7/08
Attorney, Agent or Firm:
松本 隆