Also, if the datasheet shows transformer pin 6 connected to ground and pin 4 connected to the output. You have these swapped.
On Wednesday, June 24, 2020 at 9:08:46 AM UTC-4, Paul Andrews wrote: > > Where is D4 in your circuit? It should be between the transformer pin > connected to SW and the transformer pin connected to ground. > > On Wednesday, June 24, 2020 at 9:06:07 AM UTC-4, MrThe50sanchez wrote: >> >> Hello ! >> >> Yes, I used the components that the Datasheet says, I got it from here: >> >> >> The thing is, that a Triple Voltage Circuit uses electrolitic capacitors, >> this is not the same configuration as a voltage triple circuit, but, Can It >> be that the capacitors I added are not electrolitic? I just >> putted normal ones (SMD 10nF 250V). >> >> Thanks a Lot! >> >> >> >> >> >> El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews >> escribió: >>> >>> 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/f60d6ff7-a6d6-42f6-bac0-249c239f0340o%40googlegroups.com.
