DC/DC CONVERTER, AND SWITCHING POWER SUPPLY DEVICE
To reduce variations of a load current in light load mode switching.SOLUTION: In a switching power supply device provided with a light load mode, a slope voltage generation circuit increases a slope voltage V2 at a predetermined inclination from a predetermined reset level (V2AC (0)) during an ON pe...
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| creator | WACHI TAKASHI YOSHIDA TAKEHIRO SEKI SETO HIGASHIDA YOSHIO |
| description | To reduce variations of a load current in light load mode switching.SOLUTION: In a switching power supply device provided with a light load mode, a slope voltage generation circuit increases a slope voltage V2 at a predetermined inclination from a predetermined reset level (V2AC (0)) during an ON period (ON) of an output transistor and maintains the slope voltage V2 at an offset level (V2DC) during an OFF period (OFF) of the output transistor. In that case, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 so as to follow up a balance level of an error voltage V1. In particular, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 in such a manner that a difference ΔV between the balance level of the error signal V1 and the offset level of the slope voltage V2 is fixed without depending on input/output setting.SELECTED DRAWING: Figure 22
【課題】軽負荷モード切替時における負荷電流のばらつきを低減する。【解決手段】軽負荷モードを備えたスイッチング電源装置において、スロープ電圧生成回路は、出力トランジスタのオン期間（ＯＮ）にスロープ電圧Ｖ２を所定のリセットレベル（Ｖ２ＡＣ（０））から所定の傾きで上昇させ、出力トランジスタのオフ期間（ＯＦＦ）にスロープ電圧Ｖ２をオフセットレベル（Ｖ２ＤＣ）に維持する。その際、スロープ電圧生成回路は、誤差電圧Ｖ１の平衡レベルに追従するようにスロープ電圧Ｖ２のオフセットレベルを調整する。特に、スロープ電圧生成回路は、入出力設定に依ることなく誤差電圧Ｖ１の平衡レベルとスロープ電圧Ｖ２のオフセットレベルとの差ΔＶが一定となるようにスロープ電圧Ｖ２のオフセットレベルを調整する。【選択図】図２２ |
| format | Patent |
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【課題】軽負荷モード切替時における負荷電流のばらつきを低減する。【解決手段】軽負荷モードを備えたスイッチング電源装置において、スロープ電圧生成回路は、出力トランジスタのオン期間（ＯＮ）にスロープ電圧Ｖ２を所定のリセットレベル（Ｖ２ＡＣ（０））から所定の傾きで上昇させ、出力トランジスタのオフ期間（ＯＦＦ）にスロープ電圧Ｖ２をオフセットレベル（Ｖ２ＤＣ）に維持する。その際、スロープ電圧生成回路は、誤差電圧Ｖ１の平衡レベルに追従するようにスロープ電圧Ｖ２のオフセットレベルを調整する。特に、スロープ電圧生成回路は、入出力設定に依ることなく誤差電圧Ｖ１の平衡レベルとスロープ電圧Ｖ２のオフセットレベルとの差ΔＶが一定となるようにスロープ電圧Ｖ２のオフセットレベルを調整する。【選択図】図２２</description><language>eng ; jpn</language><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210318&DB=EPODOC&CC=JP&NR=2021045046A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210318&DB=EPODOC&CC=JP&NR=2021045046A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WACHI TAKASHI</creatorcontrib><creatorcontrib>YOSHIDA TAKEHIRO</creatorcontrib><creatorcontrib>SEKI SETO</creatorcontrib><creatorcontrib>HIGASHIDA YOSHIO</creatorcontrib><title>DC/DC CONVERTER, AND SWITCHING POWER SUPPLY DEVICE</title><description>To reduce variations of a load current in light load mode switching.SOLUTION: In a switching power supply device provided with a light load mode, a slope voltage generation circuit increases a slope voltage V2 at a predetermined inclination from a predetermined reset level (V2AC (0)) during an ON period (ON) of an output transistor and maintains the slope voltage V2 at an offset level (V2DC) during an OFF period (OFF) of the output transistor. In that case, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 so as to follow up a balance level of an error voltage V1. In particular, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 in such a manner that a difference ΔV between the balance level of the error signal V1 and the offset level of the slope voltage V2 is fixed without depending on input/output setting.SELECTED DRAWING: Figure 22
【課題】軽負荷モード切替時における負荷電流のばらつきを低減する。【解決手段】軽負荷モードを備えたスイッチング電源装置において、スロープ電圧生成回路は、出力トランジスタのオン期間（ＯＮ）にスロープ電圧Ｖ２を所定のリセットレベル（Ｖ２ＡＣ（０））から所定の傾きで上昇させ、出力トランジスタのオフ期間（ＯＦＦ）にスロープ電圧Ｖ２をオフセットレベル（Ｖ２ＤＣ）に維持する。その際、スロープ電圧生成回路は、誤差電圧Ｖ１の平衡レベルに追従するようにスロープ電圧Ｖ２のオフセットレベルを調整する。特に、スロープ電圧生成回路は、入出力設定に依ることなく誤差電圧Ｖ１の平衡レベルとスロープ電圧Ｖ２のオフセットレベルとの差ΔＶが一定となるようにスロープ電圧Ｖ２のオフセットレベルを調整する。【選択図】図２２</description><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</subject><subject>CONTROL OR REGULATION THEREOF</subject><subject>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDBycdZ3cVZw9vcLcw0KcQ3SUXD0c1EIDvcMcfbw9HNXCPAPdw1SCA4NCPCJVHBxDfN0duVhYE1LzClO5YXS3AxKbq5A5bqpBfnxqcUFicmpeakl8V4BRgZGhgYmpgYmZo7GRCkCAKsOJws</recordid><startdate>20210318</startdate><enddate>20210318</enddate><creator>WACHI TAKASHI</creator><creator>YOSHIDA TAKEHIRO</creator><creator>SEKI SETO</creator><creator>HIGASHIDA YOSHIO</creator><scope>EVB</scope></search><sort><creationdate>20210318</creationdate><title>DC/DC CONVERTER, AND SWITCHING POWER SUPPLY DEVICE</title><author>WACHI TAKASHI ; YOSHIDA TAKEHIRO ; SEKI SETO ; HIGASHIDA YOSHIO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2021045046A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2021</creationdate><topic>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</topic><topic>CONTROL OR REGULATION THEREOF</topic><topic>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>WACHI TAKASHI</creatorcontrib><creatorcontrib>YOSHIDA TAKEHIRO</creatorcontrib><creatorcontrib>SEKI SETO</creatorcontrib><creatorcontrib>HIGASHIDA YOSHIO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WACHI TAKASHI</au><au>YOSHIDA TAKEHIRO</au><au>SEKI SETO</au><au>HIGASHIDA YOSHIO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DC/DC CONVERTER, AND SWITCHING POWER SUPPLY DEVICE</title><date>2021-03-18</date><risdate>2021</risdate><abstract>To reduce variations of a load current in light load mode switching.SOLUTION: In a switching power supply device provided with a light load mode, a slope voltage generation circuit increases a slope voltage V2 at a predetermined inclination from a predetermined reset level (V2AC (0)) during an ON period (ON) of an output transistor and maintains the slope voltage V2 at an offset level (V2DC) during an OFF period (OFF) of the output transistor. In that case, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 so as to follow up a balance level of an error voltage V1. In particular, the slope voltage generation circuit adjusts the offset level of the slope voltage V2 in such a manner that a difference ΔV between the balance level of the error signal V1 and the offset level of the slope voltage V2 is fixed without depending on input/output setting.SELECTED DRAWING: Figure 22
【課題】軽負荷モード切替時における負荷電流のばらつきを低減する。【解決手段】軽負荷モードを備えたスイッチング電源装置において、スロープ電圧生成回路は、出力トランジスタのオン期間（ＯＮ）にスロープ電圧Ｖ２を所定のリセットレベル（Ｖ２ＡＣ（０））から所定の傾きで上昇させ、出力トランジスタのオフ期間（ＯＦＦ）にスロープ電圧Ｖ２をオフセットレベル（Ｖ２ＤＣ）に維持する。その際、スロープ電圧生成回路は、誤差電圧Ｖ１の平衡レベルに追従するようにスロープ電圧Ｖ２のオフセットレベルを調整する。特に、スロープ電圧生成回路は、入出力設定に依ることなく誤差電圧Ｖ１の平衡レベルとスロープ電圧Ｖ２のオフセットレベルとの差ΔＶが一定となるようにスロープ電圧Ｖ２のオフセットレベルを調整する。【選択図】図２２</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | DC/DC CONVERTER, AND SWITCHING POWER SUPPLY DEVICE |
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