Questions tagged [driver]

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

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1answer
2k views

Is turning off MOSFET too fast, bad?

As far as i understand turning off a MOSFET too fast, is bad, as high drain-source dv/dt can cause ringing through: a) biasing Parasitic NPN and: b) charging the GS capacitor through DG capacitor, and ...
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1answer
238 views

What's the purpose of diode between high side and low side supply voltage of IR2110?

What's the purpose of the diode between VCC and VB?
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2answers
156 views

Can i use IR2110 for two independent MOSFETs?

Can i use IR2110, and feed it with two independent PWM signals, to drive two independent MOSFETs, each controlling a separate motor? (or high side and low side inputs/outputs of this chip gonna affect ...
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1answer
493 views

Driving MOSFET from MCU with BJT

1- What is the purpose of D1 in this circuit? 2- Can i connect the PWM output of MCU to Vi through a diode, to protect the MCU from 12V supply of the drive circuit? (e.g. if Vi got accidentally ...
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0answers
90 views

L298N motor driver output error

I had worked previously on a project which used a L298N motor driver to control motors.Datasheet Link. I have now completed my project and started with the production phase of it. But while I was ...
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1answer
128 views

Stepper motor - How to choose a driver

I want to know how can I choose stepper driver, once I have decided on the stepper motor that I wish to use. This is how I understand it: If a motor can draw a current of say 0.5 amps and operates on ...
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1answer
135 views

Problems with Stepper Motor & SN754410

I am using a stepper motor for a project, it is the first time I've used one. The internet said it was very simple and easy but that's not true for me. I bought this motor from digikey https://www....
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1answer
99 views

MC33926 Motor Control Rise Time

I am using a MC33926 motor controller. Unfortunately, I am not extremely familiar with motor controllers and have a question. The circuit below shows the circuit that I am working with. The drivers ...
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1answer
47 views

NTE 4050 buffer and current sourcing capability, datasheet reading woes

I am trying to construct an output that is switched on by the inputs to a buffer. The buffer input, in the final design, will be sourced from an Arduino or Raspberry PI. I needed the buffer because ...
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0answers
53 views

Microchip MRF24WN0MB datasheet for use in STM32

We have designed a board where a Microchip MRF24WN0MB WiFi is connected to an STM32L082 ARM micro-controller through SPI. I can generate code with STM32CubeMX (compiled with Eclipse SW4STM32) and run ...
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3answers
4k views

Bootstrap mosfet driver with ir2101

I am trying to build this circuit but I don't know how to test it. When I am measuring the voltage on the gate of high side mos is almost 12 volt like VCC. So to speak .. the boostrap circuit isn't ...
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1answer
81 views

So, ?nobody? makes a high(er) current tri state driver chip? [closed]

I'm wanting to charlieplex some 100ma LEDs, and I can hardly believe no one makes a higher output tri state driver. I know how to do it with discretes, but Prove me wrong, please.
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1answer
165 views

Difference between driver and transistor

I asked a question earlier question, "Is it safe to run Logic ICs at their maximum output current?" asking if it was safe to run logic ICs at their maximum current. From what I understand, this is ...
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4answers
103 views

Is it safe to run Logic ICs at their maximum output current?

I am building a circuit that will ultimately output to 8 7-segment displays. I am going to be multiplexing these displays. The displays I chose are https://uk.farnell.com/kingbright/cc56-12surkwa/...
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2answers
154 views

Ohms law and LED driver efficiency? How can this possible be true?

I am having a meltdown with a Chinese supplier at the moment and hope dearly that someone can help. I have an LED driver that is in my mind 28.8W. The output of the driver is 48 V @ 600 mA (48 V x 0....
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307 views

Attiny45 12V LED Driver

I want a fading effect on a 12V led strip when power is turned on/off. I want to keep it simple and efficient, so I choose an Attiny45. The problem is that for the Attiny to work, I would first need ...
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1answer
77 views

With this MOSFET driver IC, is the output voltage range 0 to Vin or 0 to Vcc?

I am using this driver IC, ZXGD3005E6TA. I am using a Pi as my controller, which has an output of 3.3V. The Vcc of my system is 12V. I cannot determine if the IC will output the 12V when I supply 3....
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2answers
336 views

500 watt LED PWM

I'm trying to make a PWM'd floodlight with 6 Cree CXA 2540Ns. My setup is a simple 555 timer set up for PWM, driving a 3904, which in turn drives an FDA59N30 N-channel MOSFET, properly cooled to ...
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1answer
81 views

Issue with driving Brushless Motor with a MOSFET Driver

So I have been given a circuit which supposedly works. The circuit was the the one shown but with a 10k resistor where the scribbles are. Q17 is an IRLM6344TRPbF N-chanel MOSFET and Q16 is a ...
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1answer
40 views

2A Brushed motor driver

I need to power 2 brushed dc motors with 2A each and 3 to 6V, one direction(no bidirectional or break). To the enable the rpi 3.3V pwm, and standard pins(breadboard), not those micro pins. I know the ...
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0answers
39 views

How to use less Bipolar Stepper-Motor Drivers

I make a CNC machine with lot of drivers (12) and the quality ones are quite expensives. As I never use all the motors at the same time, and the fact that the unused/resting motors can be off is not ...
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1answer
59 views

PSU for led fixture

My cousin gave me a LED fixture for which the power supply is no longer working. He threw it away so I cannot look at the specs in the PSU. He says he measured 78v out of the PSU before throwing it ...
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2answers
600 views

How to drive a 1MHz Ultrasound-TD1000KA

I want to measure the Sediment of water. So I chose a 1MHz Ultrasonic Transducer sensor with the ability to work underwater and also can recognize the sediment under water. The output of the sensor ...
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2answers
375 views

7 Segment display driver

I came up with the circuit below to drive a single 7-segment display from an Arduino via a shift register (74LS595). Is the circuit correct/good enough or am I perhaps missing something critical in ...
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2answers
93 views

LED Driver Choosing help

Newbie here, I am working on a project with a panel of 12 - 15 LEDs(std 5mm through hole LEDs) in paralell. I am currently using a 5V 1A SMPS. I used 330 Ohm resistors for current limiting. It works ...
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3answers
3k views

Resistors getting hot in this MOSFET driver circuit

I created this circuit as general purpose MOSFET driver circuit for PWM frequency up to 10KHz (usually from microcontrollers): But R3 and R5 are getting hot soon as I connect 5V supply and I did not ...
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1answer
178 views

Stepper motor driver voltage question

Attempting to drive the stepper but noticed that the motor is rated for 3V 2A and both of these boards feature a motor driving voltage of 6-30V or 7-30V Attempting to drive a Wantai 57BYGH420-2 ...
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1answer
37 views

Lower maximum current rating on available motor driver .

I am designing an arduino controlled autonomous bot with 2 DC motors to control. The motors i have to use are 500rpm 12V Johnson DC motors with Torque : 8kgcm and No-load current = 800 mA(Max), Load ...
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0answers
511 views

Driving a voltage boost circuit with a piezo driver circuit

For a university project, I'm creating my own small speaker. This speaker includes a speaker driver circuit consisting of a transistor and 3 resistors (see figure below). simulate this circuit –...
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1answer
153 views

Safe solenoid driver: can I use a slow blow fuse?

I'm building a device that uses a microcontroller to control 15 solenoids via a preexisting multichannel DC solid state relay board. When all is working as intended, at most one solenoid will be ...
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1answer
2k views

Constant Current Led Driver (non dimmable) to work with PWM

I have 18W lamps that came with non dimmable led drivers. Ive found datasheet for the main chip (ws3441), which included schematics: and internal block scheme of the chip: I'd like to add dimming ...
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0answers
86 views

cost efficient BOM for total 10x12 16 segment (1920 led) display

I've already built a few test prototype for a large(ish) 16-segment display board. I want to use a Arduino of ESP8266 to run it, with external power, and ICs for the Characters. So far, I've been ...
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1answer
1k views

Latching/Non-Latching Relay Driver Circuit with darlington optocoupler

I'm designing a circuit where an ESP8266 controls two types of relays, a single coil latching relay and a normal non-latching relay. The relays are power relays use to control low power electrical ...
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1answer
424 views

Inconsistency Issues With Stepper Motor

I am attempting to get my stepper motor to rotate 90 degrees, stop for a second, and repeat these steps. Please note I am a beginner, but I have taken physics courses so I do understand most basic ...
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1answer
133 views

5mm RGB Led built in IC [closed]

Is there any standalone IC do the same job this 5mm Led (standalone flasher and builtin control IC) does?
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1answer
104 views

Display Driver for a SHARP LS020B1DD01D LCD [closed]

I am working on a personal project that will feature an LCD panel and push buttons to control the graphical user interface. For the LCD I would like to use the SHARP LS020B1DD01D (for the ...
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1answer
36 views

Transmitting Data over USB Port Intended for Flash Drive

I have a device that allows one to transfer program files for execution via a USB flash drive. I'm interested in directly connecting this device to a PC, and writing drivers such that a given folder ...
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2answers
401 views

Controlling multiple servos and servo driver through Blynk

I'm working on a project to control multiple servos using a servo driver, through sliders on Blynk. I'm using: ESP8266 WeMos D1R2 microcontroller (wifi connected) Adafruit PCA9685 Servo Driver Blynk ...
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0answers
587 views

Mosfet Gate Driver IC

Ok so I have burned about 10 MIC4605 (Datasheet here ) gate drivers this weekend. I am unsure as to how they should be PROPERLY wired. Also have burned 8 out 10 MOSFETS (Datasheet Here ) Page 1 of ...
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1answer
317 views

MCU 3.3v to 5v Relay Driver, MOSFET or BJT

I couldn't find a definitive answer. What's more suitable to drive a 5v relay from a 3.3v MCU, a MOSFET or a BJT Transistor? NPN or PNP? I will be using a Schottky SS34 as flyback diode. Relay ...
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1answer
2k views

How to modulate solenoid current driver with PWM?

I'm trying to pilot solenoid valves in a hydraulic circuit. I have two types of solenoids, one which support 2.4 A and another 1.8 A. I pilot the valves opening using 120 Hz pwm and this driver. It'...
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1answer
347 views

MOSFET driver IC not supplying enough current

I am designing a class D audio amplifier using an HIP4080A integrated circuit to drive an H-bridge, simulating in Proteus. My problem is that the output pins of the integrated circuit, although rated ...
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3answers
875 views

Common cathode RGB LED from 3.3v

I have an RGB LED (common cathode) that I would like to trigger from the GPIO pins of an ESP8266 (3.3v). The device I am using (Wemos pro mini D1) has a 5V supply which I was planning on controlling ...
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2answers
6k views

Understanding a Single Transistor Flyback Transformer Driver?

I've been watching a few analyses of CRT flyback transformer drivers and can't understand why the transistor would shut off. To my naive perspective, it appears that the transistor should never shut ...
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1answer
233 views

MOSFET gate driver used without series capacitor

I'm planning on using this drivers I bought MD1213 to drive BUK7M45-40E MOSFETs and achieve fast PWM switching. Yet the drivers datasheet states the outputs are "Intended to drive the gate of an ...
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2answers
228 views

How to create a ±20v line driver

A design I am working on requires a ±20v differential line driver, but I can't seem to find such a component. The highest voltage line drivers seem to be RS-485, which aren't high enough. Fully ...
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1answer
2k views

MOSFET DRIVER- HIGH side vs LOW side

I am trying to understand mosfet drivers in general, no specific part. And I am encountering low side and high side drivers. My question is that if for example: I have a N channel mosfet as a high ...
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0answers
134 views

Gate Driver Not Working as Expected. Why?

I am using the ADuM5230 gate driver to drive an N-channel MOSFET in a basic buck converter circuit that will convert a 12V DC input to a 5V DC output. The buck converter will operate at a 10kHz ...
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2answers
1k views

Driving a 12V motor with brushed ESC

For my project, I have a winch motor that takes 12V. I have a 12V battery to power it. I want to be able to set up a remote control system consisting of a receiver, transmitter, and one of those ...
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1answer
251 views

High-side gate driver not working under load high current

I have been trying to implement a current limiting circuit using a high power NMOS and high side gate driver. My idea is to adjust the PWM duty-cycle of the gate driver to give an limited (average) ...

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