Questions tagged [sepic]
For questions about single-ended primary-inductor converters (SEPICs), which are a type of DC/DC converter. Use with the "dc-dc-converter" tag.
58
questions
0
votes
0
answers
27
views
Circuit analysis for DC-DC convertor SEPIC architecture
I'm analyzing the following reference design from Texas instrument for making a variable dual output (+/-60V form 11V):
What I'm curious to know is to understand the signal waveform for the following ...
- 511
1
vote
3
answers
73
views
Filter on SEPIC architecture output for making +/- 60 V from 11 V input
I'm working on a LM5155 Boost/Flyback/SEPIC controller reference design PMP40488 from TI. The goal of the design is making variable output (maximum +/- 60 V) from 11 V input. My question is related to ...
- 511
0
votes
1
answer
45
views
DC-DC converter design simulation tools and Webench design tools to identify the best-suited IC and schematic
I did a research about what are the simulation tools and webench tools for major companies like AD and TI to find a effective tools for my design purpose:
For example for Analog Devices, there is the ...
- 511
0
votes
1
answer
53
views
DC-DC SEPIC convertor design
In a reference design form Texas instrument for a SEPIC architecture:
I noticed there is a specific consideration for connection between HVGND and PGND for LM3488 as follows:
At the same time that ...
- 511
0
votes
1
answer
37
views
DC-DC convertor-SEPIC architecture
I'm working on a SEPIC DC-DC convertor, in the reference design from Texas instrument there is MOSFECT which is derived by DR pin of the main controller (LM3488) as follows:
There is an diode (D4), ...
- 511
1
vote
1
answer
88
views
LM3478 MOSFET and inductors overheating
I'm trying to design a SEPIC converter based on LM3478, with input voltage range 12-36 V, and output 24 V 2 A. I'm calculated all relevant values of components, according to "AN-1484 Designing A ...
- 13
1
vote
1
answer
71
views
LTspice: SEPIC simulated output voltage does not match known output voltage
I am designing a SEPIC that meets the following criteria:
➢ Vin = 15 V-35 V
➢ Vout = 25 V
➢ Output voltage ripple 1% peak to peak
➢ Switching frequency 100 kHz
➢ Load 10 W-50 W
Calculations have been ...
1
vote
1
answer
69
views
How to calculate diode forward voltage (Vd) for a MOSFET within a SEPIC?
I am in the process of selecting a MOSFET for a SEPIC. I require Vd in order to calculate the peak currents across the inductors, which are ultimately needed to calculate the MOSFET peak current, with ...
0
votes
0
answers
77
views
What's causing this ringing? GaN SEPIC Converter Gate Ringing
I'm designing a SEPIC converter using a HEMT GaN from EPC (EPC2204) and a dedicated GaN driver IC (1EDN71x6U). I've been in this loop (mind the pun) trying to mitigate gate ringing, and I'm having a ...
- 315
1
vote
1
answer
188
views
Not able to get enough current from buck boost (sepic) converter made using TL494
I am trying to build a buckboost converter for converting 5-40v input to 5-35V output at 3A max to use it for many purposes by usign TL494. I am using a SEPIC topology as i want a non inverting output....
- 15
1
vote
1
answer
119
views
How can I achieve high efficiency in a SEPIC with AC inductor losses? Where's all my energy going and why?
I'm building an asynchronous SEPIC converter with a wide input range (10-60 V) and a 24 V 2 A output. This is based on an LM5022, and I'm trying to achieve high efficiency as its heat generation is a ...
- 315
0
votes
0
answers
193
views
Is it good idea to cascade SEPIC converters to extend the input voltage range of the XL6009?
I'm currently working on designing a current controlled SEPIC converter with a wider range of input voltage for a medium sized power application which can be powered by a lithium battery.
The existing ...
- 45
0
votes
2
answers
671
views
High power DC/DC step up or boost converter
From a wall power supply of 12V (I'm planning to use the PSU), I would like to boost the voltage to 22V at 9A to power some heating foil. These heating foil requires about 130W and I need at least a ...
- 29
0
votes
1
answer
52
views
How to calculate components values for LM3421 in SEPIC mode
How can I calculate the components values for LM3421 in SEPIC mode?
In the LM3421 datasheet, there is not much information about SEPIC topology. (Section 9.2.9.2 is labelled "Detailed Design ...
- 13
0
votes
1
answer
173
views
Meaning of these inductor dot symbols
For the following circuit from the NCV5171 datasheet:
What is the meaning of a solid dot on one inductor and an open dot on the other?
- 705