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 Components 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

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Omschrijving Prijs Maximum Switching Frequency Start-up Supply Current Maximum Source Current Maximum Sink Current Maximum Supply Current Output Voltage Output Current Zero Power Detection Control Method Number of Outputs Fall Time Mounting Type Package Type Rise Time
RS-stocknr. 753-2964
FabrikantnummerICE3BR0665JXKLA1
FabrikantInfineon
€ 2,035
Each (In a Pack of 2)
Aantal stuks
65 kHz - - - - 650 V 9.95 A - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 919-8812
FabrikantnummerICE3BR0665JXKLA1
FabrikantInfineon
€ 1,587
Each (In a Tube of 50)
Aantal stuks
65 kHz - - - - 650 V 9.95 A - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 857-8510
FabrikantnummerICE3B0365JFKLA1
FabrikantInfineon
€ 0,834
Each (In a Tube of 2000)
Aantal stuks
76 kHz - - - - - - - Current 1 30ns Through Hole PDIP 30ns
RS-stocknr. 753-2955
FabrikantnummerICE3A1565FKLA1
FabrikantInfineon
€ 1,34
Each (In a Pack of 2)
Aantal stuks
100 kHz - - - - 650 V 6.1 A - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 919-8825
FabrikantnummerICE2A265FKLA1
FabrikantInfineon
€ 2,226
Each (In a Tube of 50)
Aantal stuks
- - - - - 650 V 2 A - - 1 - Through Hole PDIP -
RS-stocknr. 168-7402
FabrikantnummerICE3A1565FKLA1
FabrikantInfineon
€ 1,141
Each (In a Tube of 50)
Aantal stuks
100 kHz - - - - 650 V 6.1 A - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 462-7249
FabrikantnummerICE2A265FKLA1
FabrikantInfineon
€ 2,604
Each (In a Pack of 5)
Aantal stuks
- - - - - 650 V 2 A - - 1 - Through Hole PDIP -
RS-stocknr. 919-8816
FabrikantnummerICE2A265FKLA1
FabrikantInfineon
€ 2,196
Each (In a Tube of 50)
Aantal stuks
- - - - - 650 V 2 A - - 1 - Through Hole PDIP -
RS-stocknr. 110-7480
FabrikantnummerICE3A1065ELJFKLA1
FabrikantInfineon
€ 1,079
Each (In a Pack of 10)
Aantal stuks
113 kHz - - - - - - - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 168-5881
FabrikantnummerICE3A1065ELJFKLA1
FabrikantInfineon
€ 1,078
Each (In a Tube of 50)
Aantal stuks
113 kHz - - - - - - - Current 1 30ns Through Hole DIP 30ns
RS-stocknr. 166-1149
FabrikantnummerICE3BS03LJGXUMA1
FabrikantInfineon
€ 0,455
Each (On a Reel of 2500)
Aantal stuks
73.7 kHz - - - - - - - Current 1 55ns Surface Mount DSO 150ns
RS-stocknr. 110-9090
FabrikantnummerICE2QS03GXUMA1
FabrikantInfineon
€ 0,98
Each (In a Pack of 10)
Aantal stuks
65 kHz 550µA - - 2.3 mA - - Yes - 1 - Surface Mount DSO -
RS-stocknr. 110-7467
FabrikantnummerICE3BS03LJGXUMA1
FabrikantInfineon
€ 0,843
Each (In a Pack of 20)
Aantal stuks
73.7 kHz - - - - - - - Current 1 55ns Surface Mount DSO 150ns
RS-stocknr. 166-0829
FabrikantnummerICE2QS03GXUMA1
FabrikantInfineon
€ 0,448
Each (On a Reel of 2500)
Aantal stuks
65 kHz 550µA - - 2.3 mA - - Yes - 1 - Surface Mount DSO -