Electronic Components Datasheet Search |
|
LNK564P Datasheet(PDF) 6 Page - Power Integrations, Inc. |
|
LNK564P Datasheet(HTML) 6 Page - Power Integrations, Inc. |
6 / 16 page Rev. H 11/08 6 LNK562-564 LinkSwitch-LP Layout Considerations Layout See Figure 6 for a recommended circuit board layout for LinkSwitch-LP (P & G package). Single Point Grounding Use a single point ground connection from the input filter capacitor to the area of copper connected to the SOURCE pins. Bypass Capacitor (C BP) The BYPASS pin capacitor should be located as near as possible to the BYPASS and SOURCE pins. Primary Loop Area The area of the primary loop that connects the input filter capacitor, transformer primary and LinkSwitch-LP together should be kept as small as possible. Primary Clamp Circuit An external clamp may be used to limit peak voltage on the DRAIN pin at turn off. This can be achieved by using an RCD clamp or a Zener (~200 V) and diode clamp across the primary winding. In all cases, to minimize EMI, care should be taken to minimize the circuit path from the clamp components to the transformer and LinkSwitch-LP. Thermal Considerations The copper area underneath the LinkSwitch-LP acts not only as a single point ground, but also as a heatsink. As it is connected to the quiet source node, this area should be maximized for good heat sinking of LinkSwitch-LP. The same applies to the cathode of the output diode. Y-Capacitor The placement of the Y-type cap should be directly from the primary input filter capacitor positive terminal to the common/ return terminal of the transformer secondary. Such a placement will route high magnitude common-mode surge currents away from the LinkSwitch-LP device. Note: If an input pi (C, L, C) EMI filter is used, then the inductor in the filter should be placed between the negative terminals on the input filter capacitors. Figure 6. Recommended Circuit Board Layout for LinkSwitch-LP using P Package (Assumes a HVDC Input Stage). + HV DC INPUT - + Input Filter Capacitor CBP - DC OUT Output Filter Capacitor PI-4157-101305 Maximize hatched copper areas ( ) for optimum heatsinking TOP VIEW Tr a n s f o r m e r D S S FB BP S S |
Similar Part No. - LNK564P |
|
Similar Description - LNK564P |
|
|
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 |