Questions tagged [ripple]
Small unwanted residual periodic variation of a direct current (dc) output.
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OBD2 Pwr+Gnd causes poor GPS reception in device plugged into it, looking for causes & solutions
Myself and a few others have built a custom device (PCB & components) which is designed to run while plugged into an OBD2 connector in a vehicle and capture GPS location data and transmit it via ...
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Persistent ripple at the buck converter output
I developed a half-bridge buck converter, I did all the steps, from the converter calculations, such as accommodating the copper in the appropriate ferrite core, wire gauge diameter, etc., my project ...
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Distance issue between driver and the MOSFET load [closed]
I have issues getting shorter VGS rise time like 10 ~ 15 ns in a MOSFET circuit for my project.
My load MOSFET has a very high input capacitance -a so called big device.
The gate voltage feed is 15V.
...
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Proof of ripple voltage of capacitor filter?
From Electronic Devices and Circuit Theory by Robert L. Boylestad:
To get an equation for ripple voltage, the book wrote, $$\frac{V_{r(p-p)}}{T_1}=\frac{V_m}{\frac{T}{4}}$$
How did they come up with ...
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TPS61088RHL high ripple noise on normal operation
I have been working with one project which require 12 V power supply with at least 1.5 A current. I used TI Webench power designer tool to create simple 5-10 V input and 12 V 2 A output design. Since ...
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NCP11187 - SMPS Design Issues
I have been working on a SMPS design using the NCP11187. It should output 24V DC nominal with a maximum ripple of no more than 100mV Pk-PK and be able to output up to 50 Watts. I have generally ...
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Preventing spikes in inductor current (probably) caused by lab power supply
As part of a university project I'm trying to produce a current through an inductor (610uH), that'll eventually be used as a solenoid. I'm producing this using a PWM voltage produced by a TI GaN ...
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Input capacitance estimation for a buck converter
To estimate minimum input capacitance required for a buck converter to help with power stability & noise suppression, I came across below equation by TI.
https://www.ti.com/lit/an/slyt670/slyt670....
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Voltage transients in stepper driver
I am having considerable amplitude of voltage transients in my ~60V stepper driver design. I referenced High-Voltage Stepper Reference Design Using DRV8711 document for building the circuit albeit ...
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Inductor magnetic field collapses during switching?
SEE EDITS BELOW
I'm running into some problems with my Buck converter design. During the switching period the inductors magnetic field seems to collapse, which generates some large voltage peaks. That'...
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Switching power supply has high ripple voltage no matter how many capacitors are added
I'm designing a board that uses a Texas Instruments TLV62569DBVR (datasheet here) to convert 5V input from a USB power supply to 3.3 volts to be used to power an ESP32-WROOM-32D-N4. I am having lots ...
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LC Filter Creates Ripple Voltage in Buck Converter
I'm currently designing a synchronous buck converter and trying to simulate it in LTSpice.
I know the purpose of L1 and C4 is to act as a filter to smooth out the output, since it would be rapidly ...
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Buck converter has low frequency ripple with high amplitude
I "designed" a simple buck converter, which is basically a clone of the 5V reference design in the TPS6293x datasheet. The converter is outputting the correct voltage on average, but has ...
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Can you power 2 voltage rails simultaneously using a buck-boost converter?
I am designing a custom PCB and want to power 2 rails: a 3.3V and 5V rail, with a single 250mAh LiPo battery (3.7V) and need the 5V rail to have as stable a voltage as possible.
I understand that a ...
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Choosing filter capacitor and inductor for AC to DC rectifier
I am designing a three phase AC to DC rectifier. This DC output will be connected to a 6 IGBT bridge. That IGBT will be controlled using SVPWM technique to control a PMSM motor. What factors do I need ...
