Electronic Components Datasheet Search |
|
ART2815TEMA Datasheet(PDF) 7 Page - International Rectifier |
|
ART2815TEMA Datasheet(HTML) 7 Page - International Rectifier |
7 / 12 page www.irf.com 7 ART28XXT SERIES Effectiveness of this heat transfer is dependent on the intimacy of the baseplate-heatsink interface. It is therefore suggested that a heat transferring medium possessing good thermal conductivity is inserted between the baseplate and heatsink. A material utilized at the factory during testing and burn-in processes is sold under the trade name of Sil-Pad®4001. This particular product is an insulator but electrically conductive versions are also available. Use of these materials assures optimum surface contact with the heat dissipater by compensating for minor surface variations. While other available types of heat conducting materials and thermal compounds provide similar effectiveness, these alternatives are often less convenient and are frequently messy to use. A conservative aid to estimating the total heat sink surface area (AHEAT SINK) required to set the maximum case temperature rise ( ∆T) above ambient temperature is given by the following expression: A HEATSINK ≈ ⎧⎨ ⎩ ⎫ ⎬ ⎭ − − ∆T P 80 594 085 143 . . . ∆T PP Eff OUT = == − ⎧ ⎨ ⎩ ⎫ ⎬ ⎭ Case temperature rise above ambient Device dissipation in Watts 1 1 where As an example, assume that it is desired to maintain the case temperature of an ART2815T at +65°C or less while operating in an open area whose ambient temperature does not exceed +35°C; then ∆T = 65 - 35 = 35°C From the Specification Table, the worst case full load efficiency for this device is 80%; therefore the maximum power dissipation at full load is given by () P =• − ⎧ ⎨ ⎩ ⎫ ⎬ ⎭ =• = 30 1 80 130 0 25 75 . .. W and the required heat sink area is A = 35 80 7.5 in HEAT SINK 0.85 • ⎧ ⎨ ⎩ ⎫ ⎬ ⎭ −= −143 2 594 318 . .. 1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN Thus, a total heat sink surface area (including fins, if any) of approximately 32 in2 in this example, would limit case rise to 35°C above ambient. A flat aluminum plate, 0.25" thick and of approximate dimension 4" by 4" (16 in2 per side) would suffice for this application in a still air environment. Note that to meet the criteria, both sides of the plate require unrestricted exposure to the ambient air. Inhibiting Converter Output As an alternative to application and removal of the DC voltage to the input, the user can control the converter output by providing an input referenced, TTL compatible, logic signal to the enable pin 3. This port is internally pulled “high” so that when not used, an open connection on the pin permits normal converter operation. When inhibited outputs are desired, a logical “low” on this port will shut the converter down. An open collector device capable of sinking at least 100 µA connected to enable pin 3 will work well in this application. Figure II. Enable Input Equivalent Circuit A benefit of utilization of the enable input is that following initial charge of the input capacitor, subsequent turn-on commands will induce no uncontrolled current inrush. 118K 2N2907A 150K Enable Input Input Return 150K 2N2222A 2N2222A V in 64K 186K 150K 5.6 V Converter inhibit is initiated when this transistor is turned off 65K CR2 |
Similar Part No. - ART2815TEMA |
|
Similar Description - ART2815TEMA |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |