Optimizing Electrical Characteristics for a 3.6kw CLLLC Project
Explore the adjustments made to the turn ratio and excitation inductance along with customer requirements and the proposed overview for a 3.6kw CLLLC project. Mechanical drawings and dimensions are also discussed, focusing on making things smaller and smarter in this innovative endeavor.
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Presentation Transcript
Customer: TI Cytec P/N: VT-22247B Project Name: 3.6kw CLLLC Presenter Name MM/DD/YYYY
Meeting topics 1.Turn ratio adjusted from 8.33 (25:3) to 9 (27:3). 2.The excitation inductance is adjusted from 37.2uH to 56uH. 3. Both primary and secondary wire could shorten 20mm.(Each length is 80mm) 2 Cyntec Confidential
Customer Requirements Spec Range PARAMETER Units (25:3) * 9 (27:3) * 56.0 Min Typ Max Input voltage 380 400 410 V Output voltage 40 48 60 V Output Current 0 75 75 A Battery charging Mode Continuous Output power 3600 Watt 40V---48V: 1.1*typical output current 48V---60V: 1.1*continuous output power OCP Efficiency 96%@full load Input voltage 40 48 V 60 Output voltage 380 400 410 V Reverse power flow Mode Continuous Output power 3600 Watt Efficiency 96%@full load C Operating ambient temperature -30 25 55 Dimension(Fan excluded) mm Power density target W/cm3 Pri Se c *Modify electrical conditions 3 Cyntec Confidential
Customer Requirements Convert Test Electrical characteristics Equivalent Electrical Characteristics 16.2uH 10uH 10uH 0.2uH Lr1 9:1 Lr2*n2 9:1 Lm 56H 0.2uH 56uH L(1-2), L(3-4, OPEN)=Lr1+Lm=66.0uH L(1-2), L(3-4, Short.): Lk1=Lr1+ ?? ??2 ?2 (??+??2 ?2)=10+12.56=22.56uH L(3-4), L(1-2 Short.): Lk2 =Lr2+ ?? ??1/?2 (??+??1/?2)= 0.2 + 0.12 =0.32uH *Modify electrical conditions 4 Cyntec Confidential
Proposal Overview Lk1 (1-2) @100kHz/1V (3,5-4,6 shorted) [ H] Lk2 (3,5 - 4,6) @100kHz/1V (1-2 shorted) [ H] Lp (1-2) @100kHz/1V Turn Ratio L(1-2) DCR L(3-4) DCR L(5-6) DCR Item [ H] 66.0 Typ (56+10) - [m ] [m ] [m ] Customer s Request 22.56 Typ. 0.32 Typ. 8.33 TBD. TBD. TBD. 8.33 (27:3) 66.0 Typ 22.56 Typ. 0.32 Typ. VT-22247B 36 Typ. 3.5 Typ. 3.5 Typ. 1.Above all parameters are under ambient temperature 25 . 2.Electronic characteristic by simulation 3.100% check before shipment and don t care Cpk. 2 1 Schematic 3 5 1 3 5 4 6 Sec Pri Core Size w/o Terminal : PQ52/32/43.8. TYP. (Customer s Request : VT-22247A Sizemm3 .) 2 4 6 P(3-4) P(5-6) 5 Cyntec Confidential
Mechanical Drawing & Dimensions 3 5 2 4 6 1 Top View Front View Right View Bottom View 6 Cyntec Confidential
Making Things Smaller and Smarter www.cyntec.com
