Questions tagged [switching-regulator]
It's a type of voltage regulators that rapidly switch a series device on and off.
509 questions
0
votes
1
answer
179
views
Buck converter – schematic and PCB layout
I’m designing a small 2-layer PCB module using the Diodes Inc. AP63200 (synchronous buck).
Input source (not a battery): 50 Hz mains transformer secondary → full bridge rectifier → 2200 µF bulk ...
3
votes
1
answer
166
views
Split power supply design
I'm designing a power supply with both negative and positive power supply rail. The voltage source shown in the schematics is actually the output from the secondary of a flyback converter transformer. ...
- 145
1
vote
2
answers
137
views
Inverted Switching Regulator Entering Hiccup Mode
I have a design using the LT8648S switching regulator in an inverted topology to produce an output of -15V (input is 25.7V). The schematic is shown below. I followed Linear Technologies Design Note ...
1
vote
1
answer
71
views
Purpose of a Set of Resistors in Concurrent +-12V Supply
I'm designing a +-15V supply and mimicking this +-12V supply example schematic provided in Analog Techs LTC7149 datasheet. I'm specifically curious about the purpose of Rset3 and Rset4. If I'm not ...
0
votes
1
answer
108
views
Identify this component labeled AVXS T34 from DJI Mini 2 [closed]
I was repairing a DJI Mini 2 drone the fell on water. I cleaned the board and started doing some measurements. I noticed a couple of shorted capacitors around the nt5cb128m16jr-fl chip SDRAM and I ...
4
votes
2
answers
459
views
LT8361 generate -80 voltage
I want to use LT8361 to generate -80V supply. In the datasheet, I find the connection for 80V supply, I would like to know how to modify this circuit to generate -80V supply?
There is the link for ...
- 77
0
votes
2
answers
133
views
Switching regulator noise: fixed resistor vs digital potentiometer
I am building a switching regulator design for a high current application. Here I want to control output voltage Vout through the custom software by adding the digital potentiometer, basically ...
- 43
4
votes
2
answers
367
views
SEPIC Output spiking - What's causing the problem? - MC34063
I am working on a SEPIC converter based on a NJM2374 IC (equivalent to MC34063) to be used in a DIY laboratory power supply. Unfortunately, I’ve encountered a lot of issues with spiking on the output.
...
- 335
0
votes
1
answer
95
views
TPS63070 outputting 6.15v instead of 3.8v
I have a tps63070 set up to output 3.8v but it is putting out 6.15v. I am following this in the datasheet:
My R1 is 660K (2 x 330k in series) and R2 is 100K. Here is my schematic. Sorry it's so messy....
2
votes
1
answer
221
views
+24V to +-15V and +-12V Using Switching and Linear Regulator
I'm designing a power control unit for a project where I need to take a 24V input and step it down to low noise +-15V and +-12V. The plan I've decided to go with uses the LTC3649 and LTC7149 switching ...
1
vote
1
answer
61
views
How to disable level shifters in TPS61096A?
I'm planing to use TPS61096A as a low power, low Iq boost for my battery powered device. I looked into devices from TI, Analog devices, Torexsemi and Monolithic power; It's the perfect choice as I ...
- 2,405
0
votes
0
answers
97
views
PCB-Design LM2670 Feedack
I need feedback on my LM2670-5V TO-220 PCB board layout. The PCB layout is from Altium. It has 4 layers Signal, GND, GND; Signal with 2 oz copper planes. The copper traces are 50mils. All components ...
-2
votes
1
answer
349
views
Motorcycle Regulator Rectifier using buck converter method
please help me as a beginner. (Maybe I will copy the same question on several forum sites to add references)
I am making a regulator rectifier (RR) for a motorbike that uses the buck converter method. ...
2
votes
2
answers
619
views
Control loop of the switching power supply
How the control loop of the switching power supply dominates the tank circuit (output inductor and output capacitor)? And more importantly, why should the output tank circuit (L and C) dominate the ...
- 2,245
0
votes
2
answers
104
views
LM2678 regulator blew up during normal operation, trying to determine cause
I recently had an LM2678 switching DC regulator fail and I'm trying to figure out why. It was the 5V output version, with a 24V input voltage. The load at the time is difficult to estimate, but was ...
- 65