Read the layout recommendations in the LT1308A datasheet. You will need to adapt it to this configuration.
What is the voltage rating of the 47k resistor? What are the voltage ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What is the saturation current of the transformer? On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote: > > Hello! Thanks for the response! > > I add here again the PCB layers that Im using. > > > El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió: >> >> What does your layout look like? Show us a picture of the pcb with the >> layers visible. >> >> Just the layout of the board can make or break a DC-DC converter with all >> of the high current transients and control signals. >> >> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez <[email protected]> wrote: >> >>> >>> Hello Again, hope everyone is good! >>> >>> I was trying to make a DC-DC booster converter using the LT1308B/A >>> device, I made a PCB for it, doing the same as the datasheet of this device >>> says, but I don´t get the High Votage, and that`s >>> why im here asking for help, I tried a lot of things put don`t know what >>> it can be. >>> >>> This is the schematic I use (This one is from the datasheet) : >>> >>> >>> The PCB I made is the same as this schematic and using the same >>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.* >>> >>> *Any Ideas of what I can do to find what is going wrong?* >>> >>> *I have LBI and LB0 from the LT1308 Device not connected to anything. >>> */SHDN pin is connected to Vin, Positive Voltage to It works. >>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and >>> R2 = 300 Ohm to get 1,21V Feedback. >>> *The capacitors Im using (10nF 250v) are not electrolitic, they are >>> normal ones. >>> >>> >>> Thankss Guys! >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "neonixie-l" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/neonixie-l/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/88551fe2-e03e-4d81-aaf9-794b0a7f5f68o%40googlegroups.com.
