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

    553 Products showing for PWM

    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Surface Mount
    SOIC
    -
    8
    -
    5 x 4 x 1.25mm
    -
    5mm
    Current Mode
    4mm
    1.25mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    onsemi
    -
    750 kHz
    -
    -
    -
    -
    -
    0.5 A, 1 A
    Current
    -
    50ns
    Surface Mount
    SOIC
    80ns
    16
    Resonant
    10 x 3.9 x 1.75mm
    50%
    10mm
    Current Mode
    3.9mm
    1.75mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    onsemi
    -
    750 kHz
    -
    -
    -
    -
    -
    0.5 A, 1 A
    Current
    -
    50ns
    Surface Mount
    SOIC
    80ns
    16
    Resonant
    10 x 3.9 x 1.75mm
    50%
    10mm
    Current Mode
    3.9mm
    1.75mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback, Forward
    10.92 x 6.6 x 3.32mm
    100%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback, Forward
    10.92 x 6.6 x 3.32mm
    100%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    onsemi
    -
    500 kHz
    -
    -
    -
    -
    4.95 to 5.05 V
    1 A
    Current
    1
    150ns
    Surface Mount
    SOIC
    150ns
    8
    Boost, Flyback
    5 x 4 x 1.5mm
    96%
    5mm
    Current Mode
    4mm
    1.5mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    onsemi
    -
    500 kHz
    -
    -
    -
    -
    4.95 to 5.05 V
    1 A
    Current
    1
    150ns
    Surface Mount
    SOIC
    150ns
    8
    Boost, Flyback
    5 x 4 x 1.5mm
    96%
    5mm
    Current Mode
    4mm
    1.5mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback
    10.92 x 6.6 x 3.32mm
    50%
    10.92mm
    Current Mode
    6.6mm
    3.32mm
    STMicroelectronics
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Surface Mount
    SOIC
    -
    8
    -
    5 x 4 x 1.25mm
    -
    5mm
    Current Mode
    4mm
    1.25mm
    onsemi
    -
    275 kHz
    -
    -
    -
    -
    5.1 V
    1 A
    Current
    1
    150ns
    Surface Mount
    SOIC
    150ns
    8
    Boost, Flyback, Forward
    5 x 4 x 1.5mm
    96%
    5mm
    Current Mode
    4mm
    1.5mm
    onsemi
    -
    2200 MHz
    0.8mA
    1500mA
    1500mA
    35 mA
    5.2 V
    -
    -
    3
    -
    Through Hole
    SOIC
    -
    16
    -
    19.55 x 6.85 x 3.43mm
    -
    19.55mm
    Switching Regulator
    6.85mm
    3.43mm
    onsemi
    -
    190 kHz
    -
    -
    -
    -
    4.5 V
    150 mA
    Current
    1
    120ns
    Surface Mount
    SOP
    200ns
    8
    Flyback
    4.9 x 3.9 x 1.75mm
    -
    4.9mm
    Current Mode
    3.9mm
    1.75mm
    STMicroelectronics
    -
    300 kHz
    -
    -
    -
    -
    18 V
    100 mA
    Voltage
    2
    100ns
    Surface Mount
    SOIC
    200ns
    16
    Push-Pull
    10 x 4 x 1.65mm
    45%
    10mm
    Voltage Mode
    4mm
    1.65mm
    Results per page