Questions tagged [driver]

A chip or a circuit that sends a signal with more current or voltage, or over longer distances.

Filter by
Sorted by
Tagged with
0 votes
0 answers
48 views

3.3V to 5V driver (push-pull) output too low

I was recently testing using SN74LVC1G17DCKR and was having trouble getting the output voltage to reach close to Vcc as per the datasheet. Vcc input is 5 V. My input was 3.27 V and I was getting ...
Krishnadas R's user avatar
1 vote
1 answer
53 views

DRV8874 motor driver on a custom PCB burns immediately

I've designed a custom PCB for the DRV8874 motor driver. The problem is, as soon as I connect +24V to the board, I hear/see a sparkle on the voltage pin on the header (J1). Huh... but okay, with the ...
somemisopaste's user avatar
1 vote
1 answer
71 views

Saturation of controlled voltage source

I have simulated a voltage controlled current source based on the article in the link; the LTspice file is also attached. I think my MOSFETs are saturated, so I get almost constant current on the ...
criss95's user avatar
  • 11
0 votes
0 answers
33 views

Increase output current from LED Driver PCA9956B

How can I increase the output current of LED driver IC PCA9956B? I want to connect LED strips 1.5 A for each output 0-23 channels. I considering power transistors N-Mosfet.
Gregory's user avatar
  • 300
0 votes
1 answer
26 views

Driver design tips for YIG

starting a driver design for YIG input is 1mV output 25mA Specifications: BW of 2MHz will be good. 10mW input needs to be interpret into 30mA threw load coil. The FM coil data: sesitivity: 450 ...
Josh23's user avatar
  • 1
0 votes
2 answers
117 views

While testing unloaded half-bridge, driver self-destructs

I have an IRS2153D configured so that the driver power supply is separate but not isolated from the half-bridge power supply. As soon as I place 12 V across the unloaded half-bridge, the driver bricks ...
ElectronicsNoob's user avatar
0 votes
1 answer
88 views

Best decoupling capacitor part or series? [closed]

I am using motor driver, for PVDD as per datasheet I provided decoupling capacitors 100nf close to each pins (4pins) and a bulk capacitor 10uF as common both are X7R ceramic. I see some article ...
NICEGUY NICEGUY's user avatar
0 votes
0 answers
26 views

Low side driver for unipolar stepper motor (voltage drop or current limiter)

I need drive unipolar stepper motor which resides in device with center coil pins connected internally together. So I cannot change to bipolar driver. I use ULN2003 which works and I drive it with 5V,...
TMa's user avatar
  • 1,100
0 votes
1 answer
72 views

Will this driver circuitry work as intended to switch half-bridge FETs?

Given that the PWM_H signal is referenced to SGND and the driver is referenced to VSW (switch node of the half bridge), will the gate driver function correctly without a connection between the driver'...
Rohan Kharvi's user avatar
0 votes
1 answer
99 views

How to drive a brushed DC motor with a DC signal, or filtered PWM signal?

I need to drive a brushed DC motor (inside a linear actuator) with an electronics circuit. The cable feeding the actuator has, in addition to supply_A and supply_B wires, two wires for feedback ...
MAX's user avatar
  • 1
0 votes
1 answer
62 views

DRV8825, TMC2209 burning out on stepper rotation

I have burned one tmc2209 and 3 drv8825 drivers. I have a linear rail with nema23 on it. Esp32-tmc-stepper conf I wanted to move it fast, so i pushed the stage and got a magic pop and smoke. I made a ...
aleXela's user avatar
  • 101
0 votes
0 answers
68 views

Help understanding inductor formula in boost converter

I'm designing an LED light array and have chosen the MC34844 LED driver from NXP. I have elected to go with I2C control mode and a 14S8P array of blue LEDs with the following parameters: Input ...
Aggo's user avatar
  • 1
0 votes
2 answers
67 views

How to get a smooth operation of multiplexed solenoids

My project involves 100 small solenoids, that I either have drive individually, or hopefully I can drive in a multiplexed configuration, the same way LED displays are driven. Then I only need 20 ...
Björn Morén's user avatar
0 votes
0 answers
88 views

Proper IGBT driver circuit for power inverter

I've examined IGBT driver in inverter in power generator (same model as presented here https://www.youtube.com/watch?v=3owRSqmz2JQ). Inverter topology is H bridge with two chokes in series with 230V ...
Andrew123's user avatar
  • 101
1 vote
2 answers
110 views

The functionality of a driver circuit

I was requested to make a laser driver circuit for a course project. After some research, I found this circuit. Can someone explain how this circuit works? What is 1R (R5&R6)? Can it be replaced ...
Mu'men Yasser's user avatar
0 votes
0 answers
58 views

Connecting 2 LED strips and 1 driver

I have the following things: 1 5w 3in1 LED strip 1 10w 3in1 LED strip 1 20w 3in1 Driver The driver has 3 wires in output, 2 in input. The LED strips each have 3 ...
Sevil Dubariya's user avatar
5 votes
7 answers
3k views

Transistor Driver - what is the purpose of Q2 on the included schematic?

I saw this schematic at the link below and I would like to know if there is any use in particular for Q2. Since the transistor Q2 is just, somehow, operating as a simple diode that is following the ...
Nedou's user avatar
  • 318
2 votes
1 answer
74 views

Designing a single-ended to differential driver to DC2588A-A evaluation board

I'd like to test the DC2588A-A, and I noticed that the user guide mentions it's driven by a pair of ADA4899-1 DRIVER amplifiers. However, the user guide doesn't provide clear information about the ...
Abdel Djaferbey's user avatar
0 votes
1 answer
36 views

Long falling edge of a VCSEL laser's pulses

I've been trying to drive a 940nm VCSEL (Part No. V105Q131A-940) with an iC-Haus HG20M VCSEL driver. When given short pulsed signals (pulsewidth of ~100us), the optical signals detected by a ...
Boan Fang's user avatar
2 votes
3 answers
301 views

Can you exceed max mosfet current for a few nanoseconds?

Alright so I have a circuit designed to switch very high currents, it reliably switches 1500 A using these: https://au.mouser.com/ProductDetail/Vishay-Siliconix/SQJQ140E-T1_GE3?qs=...
leasthollow's user avatar
0 votes
0 answers
48 views

I need a MOSFET gate driver for Synchronous boost DC-DC converter circuit

I have designed a Synchronous boost DC-DC converter with two N-Chanel MOSFETs. But I can not find a proper gate driver for my circuit. I'm looking for a driver that will turn off one mosfet while the ...
aork's user avatar
  • 9
0 votes
0 answers
68 views

Controlling LED drivers with a PWM using a PIC MCU

In one of the circuits I'm working on, there are three LED's connected to every LED driver output (I have a space and cost constraint because of which I need to use this). The high side of each LED is ...
Siddharth Goel's user avatar
0 votes
1 answer
58 views

MCP6022 as an ADC driver for STM32F401 Black Pill

I am trying to make an ADC driver (MCP6022 op-amp) for a DSO oscilloscope using STM32F401 Black Pill board. The Black Pill can do up to 2.4 Msps but my limitation is the input driver which barely ...
JOHN KARIUKI's user avatar
0 votes
1 answer
20 views

Planning out a LED driver 60v+ input, 36v 1a output

I have 2 of 7070 (6 core) LEDs, that makes it 12 cores, all in series (should require 34-40v output there for) led web page I want to build high efficiency DC-DC LED driver for them. Input is Li-Ion ...
Artem Bulashev's user avatar
0 votes
1 answer
96 views

How Series FET connected opposite to each other operates? [closed]

Two FETs are connected in series opposite to each other. See the following circuit diagram. I am confused here that when both FETs are turned on, How does it allow current to flow? but in the ...
KHALIL's user avatar
  • 11
3 votes
0 answers
77 views

Modding a $30 fog machine, driving high power LEDs?

I've recently acquired a $30 fog machine off Amazon that features, next to the obvious fogger, eight high power RGB LEDs, controlled in series via a RF remote. The LEDs are very bright so I assumed ...
Johnny Verbeek's user avatar
0 votes
3 answers
1k views

Implementing a 5 Watt, Linear Variable DC Power Supply that DOESN'T get burning hot?

The load I am trying to drive is a fan module that includes a DC cooling fan, a tachometer, some status LEDs and other temperature monitoring electronics. Historically users have swapped power ...
esologic's user avatar
  • 121
0 votes
1 answer
69 views

I am driving a LT3092 current source with a variable voltage - to get a variable DC current, but the output needs to float 0 to 1.5V above ground

What type of buffer amplifier would work - either discrete opamps or a differential output opamp? The output voltage would ideally vary up to 12VDC. The variable current source has a variable load ...
Charlie Landino's user avatar
1 vote
1 answer
112 views

Using a logic driver with a 50 ohm load

I have a load which is an external trigger input of the Highland Technology T130 single-channel picosecond EOM driver (technical manual - Google Drive link) which is 50 ohm and it requires a pulse ...
user1245's user avatar
  • 4,093
0 votes
0 answers
157 views

PWM is not controlling the fan, voltage drops | ESP32 4-pin fan driver

I'm know only a little about electronics but I had a try to create a driver for 2 120 mm fans (3 W*2). I have PNP, NPN BJTs and N-channel MOSFET IRF3205 which requires 4 V at the gate to be triggered. ...
Cranwell's user avatar
2 votes
1 answer
122 views

Transistors keep failing in dc motor controller

I feel like I'm a few steps away from becoming famous on this site with this controller but it's literally been years and I've went way too far to give up on it now.. Here is my schematic: It uses N ...
php_nub_qq's user avatar
0 votes
1 answer
62 views

Choice of elements for the MOSFET driver (circuit)

Requirements: 600 V, 100 kHz (full-bridge) MOSFET driver L6388E MOSFET - Datasheet Driver circuit (half-bridge): PWM digital isolator circuit: Questions: Cboot is used to power the top transistor. ...
Delta's user avatar
  • 513
0 votes
0 answers
39 views

Select the stepper motor driver

I need to know the difference between these two motors in inductance values and their operations. (1A) current/Phase, 6V, 60mH (.5A) current/Phase, 12V, 110mH In many resources, it has been ...
John Jin's user avatar
  • 419
2 votes
2 answers
426 views

Braking vs. Coasting During The PWM Off State Of A H-Bridge

Let's pretend we have a standard 4 MOSFET H-bridge that controls a 12V brushed DC motor. When driving the motor forward, we can keep SW4 on continuously and pulse SW1 on and off (see below image). If ...
gbmhunter's user avatar
  • 451
2 votes
4 answers
381 views

Convert a 0 V / 3.3 V trigger signal into a 0 V / 5V trigger signal (TTL)

I have a device sending a square trigger signal 0V / 3.3V, with a BNC connector. (We usually call it a TTL signal, I don't know if it's the common name? is it relative to Transistor-Transitor-Logic?) ...
Basj's user avatar
  • 1,906
0 votes
0 answers
33 views

Will DAC81404 work as as piezo transducer driver?

I am in the process of designing a PCB that will drive a piezo transducer that is split into 4 quadrants with a DAC81404. The piezo transducer will move an atomically sharp tip to probe the surface of ...
C Geeeee's user avatar
2 votes
0 answers
50 views

Adding programmable current limiting to an MP4688 LED driver

I'm trying to build a high quality constant current LED driver, with programmable current limit, and high frequency (20kHz) PWM dimming. The MP4688 (and MP2480) looked like they might fit the bill. ...
Elan's user avatar
  • 21
1 vote
0 answers
28 views

Spec sheet diagram re: NEC u7225PD LCD Driver (14 segments)

This question is in regards to figure 6 of the uPD7225 Programmable LCD Controller/Driver data sheet. My use case is typical: a 14 segment driver clocked at 147k in divide-by-four mode. From the ...
Quinn Carver's user avatar
0 votes
0 answers
275 views

What driver can I use to convert a 24 bit Parallel RGB signal into SPI or MCU?

I want to convert a 24 bit RGB signal into a SPI or MCU interface to drive a small LCD. I have a circuit that I have created that has dedicated video memory and is connected to a small circuit that ...
Pseudonymous Garbage's user avatar
0 votes
0 answers
172 views

How to drive 1 MHz ultrasonic transducer, transmitter-reciever schematic

I have just bought some ultrasonic sensors from China for a project I'm developing, and the datasheet is not the best, also with my low electrical engineering skills, I am not sure of how to drive the ...
Tomas Tchimino Marcotti's user avatar
0 votes
0 answers
49 views

BLDC motor - strange phase waveforms

I trying implement bldc motor driver based on below schematic. The color circles on schematic correspond to waveforms from oscilloscope (all probes are connected to common GND of MCU and PSU that ...
grandzello's user avatar
1 vote
0 answers
106 views

Stepper motor doesn't spin - it just vibrates

I’m using a NEMA17 stepper motor (17HS4401) and TMC2225 driver (upgraded from TMC2208) for my artwork. It had a problem after about 3 weeks since the exhibition started. The motor vibrated loudly and ...
SnowLee's user avatar
  • 11
3 votes
1 answer
128 views

Can you help me to identify this IC?

I need help to identify this IC: Context, truck gate driver:
Denis Paucas's user avatar
0 votes
1 answer
104 views

Calculate supply voltage based on motor specs

I'm a software engineer with no experience in building electronic circuits. I'm trying to operate 2 motors from a Raspberry Pi via a H-bridge motor driver. Given the motor specs like torque, RPM and ...
Venkata Narayana's user avatar
3 votes
0 answers
53 views

Very High Spike and Unusual MOSFET Gate Switching Signal

My apology if I describe something wrong in this question, English is not my native language. I've been trying to work on a bidirectional converter simulation, but there are a few problem I met with ...
user17443911's user avatar
0 votes
1 answer
98 views

Driving a 3x3 RGB LED matrix using programmable IC

I am looking to build a 3x3 RGB LED matrix with individually addressable LEDs as a form of user interface. I do already have a micro controller available but want to use it only as high level ...
mkirche's user avatar
0 votes
1 answer
56 views

Understanding a driver manual

I'm a bit confused about this driver manual about its communication protocol. I want to turn on and off the driver by its I2C interface using its "I/O Connector" with a microcontroller board....
user1245's user avatar
  • 4,093
2 votes
2 answers
159 views

Improving a linear LED driver for a "breathing LED" circuit

I'm trying to improve driver stage of this circuit: (the "main LED" is 12 V automotive LED light bulb) The 555 outputs a triangular wave voltage in range 4 to 8 V and it should be converted ...
sergey.raevskiy's user avatar
0 votes
2 answers
142 views

Driving a solenoid via a digital output

What are the effects of the pull-down resistor (33K) when the solenoid-valve enters its turn-off phase? Will it prevent the solenoid-valve from ever discharging because current would flow from ground ...
user2063586's user avatar
0 votes
0 answers
60 views

Help with TP2825

I want to create a DVR based on the PB1126 chip using the TP2825 encoder. This encoder performs very well the auto-detection of cameras CVBS, AHD, etc. On the Internet, I did not find information on ...
ТОВ СпецІнТех's user avatar

1
2 3 4 5
20