PWM Controller | PWM Boost & Buck Controller | RS
Recently searched

    PWM

    Electronic circuits can contain both analogue and digital components. PWM, which stands for Pulse Width Modulation, facilitates the control of analogue devices using a digital signal. Many electrical designs use PWM for regulation, with PWM used as a way to reduce the average power that is delivered by an electrical signal by chopping it up into smaller parts. RS offer a range of PWM Controllers from a multitude of trusted brands, including ON Semiconductor, STMicroelectronics, Texas Instruments, and more.

    What do PWMs do?

    Analogue signals can be on or off, or can even be put into a position half-way between the two, whereas a digital signal has just on or off positions. Both signals appear in electronic circuits and can often be required to work together. Inputs can be converted using a DAC (digital-to-analogue converter) or an ADC (analogue-to-digital converter). PWM is available to control the output of a device: for example, PWM can convert the digital output of a microcontroller (MCU) into an analogue signal to drive the next analogue component.

    Types of PWM devices:

    • PWM Voltage Mode Controllers work by applying a control voltage (Vc) and a PWM ramp (Vramp) input.
    • PWM Current Mode Controllers add a second loop feeding back to the inductor current to create the PWM ramp.
    • PWM Switching Regulators feed the input voltage back through the PWM controller to keep the output voltage constant.

    What is a duty cycle?

    PWM signals feature two main things: frequency and a duty cycle. Duty cycle is given as a percentage (%) and refers to the amount of time the signal is on. For example, if the duty cycle is 50%, the signal is on for 50% and off for 50% of the time period. Pulse width modulation uses a rectangular pulse wave.

    Where are PWM controllers used?

    • Motors
    • LED lighting
    • Lamps
    • Heaters/HVAC
    • Electric vehicles
    • Robotics
    • Communication systems

    555 Products showing for PWM

    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    -
    -
    -
    -
    -
    13.5 V
    -
    -
    -
    -
    Surface Mount
    TSSOP
    -
    14
    -
    5 x 4.4 x 0.9mm
    -
    5mm
    Voltage Mode
    4.4mm
    0.9mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    50%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    300 kHz
    -
    -
    -
    -
    40 V
    200 mA
    Voltage
    -
    40ns
    Surface Mount
    SOIC
    100ns
    16
    Boost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
    9.9 x 3.91 x 1.58mm
    45%
    9.9mm
    -
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    550 kHz
    -
    -
    -
    -
    -
    100 mA
    Voltage
    2
    100ns
    Through Hole
    PDIP
    300ns
    18
    Boost, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
    22.48 x 6.35 x 4.57mm
    49%
    22.48mm
    Voltage Mode
    6.35mm
    4.57mm
    Microchip
    -
    1 MHz
    0.0017mA
    0.1A
    0.1A
    8 mA
    28 V
    -
    -
    -
    -
    -
    VQFN
    -
    32
    -
    -
    -
    -
    -
    -
    -
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    50%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    100%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    14
    Boost, Buck, Flyback, Forward
    8.65 x 3.91 x 1.58mm
    50%
    8.65mm
    Current Mode
    3.91mm
    1.58mm
    onsemi
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.16 x 6.6 x 3.44mm
    48%
    10.16mm
    Current Mode
    6.6mm
    3.44mm
    Microchip
    -
    112 kHz
    -
    -
    -
    -
    65 V
    1.25 A
    Current
    1
    -
    Surface Mount
    SOIC
    -
    8
    Boost, Buck, Flyback, Forward
    4.93 x 3.94 x 1.48mm
    89%
    4.93mm
    Current Mode
    3.94mm
    1.48mm
    onsemi
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.16 x 6.6 x 3.44mm
    48%
    10.16mm
    Current Mode
    6.6mm
    3.44mm
    STMicroelectronics
    -
    400 kHz
    0.25mA
    250mA
    450mA
    25 mA
    -
    -
    -
    -
    -
    Surface Mount
    SOIC
    -
    16
    -
    10 x 4 x 1.64mm
    -
    10mm
    Resonant
    4mm
    1.64mm
    onsemi
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Through Hole
    PDIP
    -
    16
    -
    19.55 x 6.85 x 3.43mm
    -
    19.55mm
    Voltage Mode
    6.85mm
    3.43mm
    onsemi
    -
    1 MHz
    -
    -
    -
    -
    5.25 V
    6 A
    Voltage
    1
    200ns
    Surface Mount
    PQFN
    200ns
    35
    Buck
    6 x 6 x 0.75mm
    50%
    6mm
    Current Mode
    6mm
    0.75mm
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Surface Mount
    SOIC
    50ns
    8
    Boost, Buck, Flyback, Forward
    4.9 x 3.91 x 1.58mm
    100%
    4.9mm
    Current Mode
    3.91mm
    1.58mm
    Results per page