{"id":579,"date":"2016-02-24T17:29:10","date_gmt":"2016-02-24T23:29:10","guid":{"rendered":"http:\/\/jimlund.org\/blog\/?page_id=579"},"modified":"2016-02-27T11:15:50","modified_gmt":"2016-02-27T17:15:50","slug":"bi-directional-switches","status":"publish","type":"page","link":"http:\/\/jimlund.org\/blog\/?page_id=579","title":{"rendered":"Bi-directional switches"},"content":{"rendered":"

Paired N-channel MOSFETs<\/strong><\/p>\n

IGBTs<\/strong>
\nThe Bi-directional Switch Commutation Issues<\/a>
\n -Fig.3.1 Possible discrete implementations of a bi-directional switch. <\/p>\n

Triacs (Thyristors):<\/strong><\/p>\n

Fast switching \/ low turn-off time \/ inverter grade \/ MOS-gated thyristors have turn off times of 5us to 30us, but are expensive or made for high current applications.
\nTurn-on time is typically 2 us.
\nApparently kHz switching is reasonable, not clear how high it can go with common parts.<\/p>\n


\nMotorola – Thyristor device data TRIACs SCRs Surge Suppressors<\/a>
\n -describes matrix switching<\/strong>
\nThyristors & Triacs – Ten Golden Rules for Success In Your Application<\/a>
\nST APPLICATION NOTE: NEW TRIACS: IS THE SNUBBER CIRCUIT NECESSARY?<\/a>
\nLogic level and sensitive gate triacs<\/a>
\nSolid State AC Relays Using Triacs<\/a>
\nON Thyristor Theory and Design Considerations Handbook<\/a>
\nPhototriac dV\/dt Application Note<\/a><\/p>\n

Parts:
\nSensitive Gate Triac: 2N6071A\/B ($0.25 \/ 100)
\nBT136S-600D, 4A 600V ($0.29 \/ 100)
\nLittlefuse Sensitive Triacs<\/a>
\nVishay PHOTOTRIACs<\/a><\/p>\n

IRFR120N hexfet, 9A 100V ($0.29 \/ 100)<\/p>\n

Driving a MOSFET with an optocoupler<\/a><\/p>\n

Guide to using optocouplers<\/a>
\n -Tie transistor base to ground (1M to 47k ohm resistor) to speed up switching.<\/p>\n

High and low side driver, IR2110S, 500V, 2A, $1.00 \/ 1<\/p>\n","protected":false},"excerpt":{"rendered":"

Paired N-channel MOSFETs IGBTs The Bi-directional Switch Commutation Issues -Fig.3.1 Possible discrete implementations of a bi-directional switch. Triacs (Thyristors): Fast switching \/ low turn-off time \/ inverter grade \/ MOS-gated thyristors have turn off times of 5us to 30us, but are expensive or made for high current applications. Turn-on time is typically 2 us. Apparently […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-579","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=579"}],"version-history":[{"count":6,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/579\/revisions"}],"predecessor-version":[{"id":585,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/579\/revisions\/585"}],"wp:attachment":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}