최근 검색 기록

    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

    506 표시되는 제품 PWM

    • RS 제품 번호 460-960P
    • 제조사 부품 번호 LM78S40CN/NOPB
    개당(튜브에 담겨 공급됨)
    ₩2,699.68
    Texas Instruments
    -
    100 kHz
    -
    -
    -
    -
    40 V
    -
    -
    1
    -
    Through Hole
    MDIP
    -
    16
    Buck
    19.05 x 6.35 x 3.3mm
    -
    19.05mm
    Voltage Mode
    6.35mm
    3.3mm
    • RS 제품 번호 796-8473P
    • 제조사 부품 번호 UC1845AJ
    개당(튜브에 담겨 공급됨)
    ₩46,257.40
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    5.05 V
    1 A
    Current
    1
    150ns
    Through Hole
    CDIP
    150ns
    8
    Boost, Flyback, Forward
    10.16 x 7.11 x 4.57mm
    50%
    10.16mm
    Current Mode
    7.11mm
    4.57mm
    • RS 제품 번호 516-5146
    • 제조사 부품 번호 UC3842BNG
    개당
    ₩1,485.20
    onsemi
    -
    500 kHz
    -
    -
    -
    -
    -
    1 A
    Current
    1
    50ns
    Through Hole
    PDIP
    50ns
    8
    Boost, Flyback, Forward
    10.16 x 6.6 x 3.44mm
    96%
    10.16mm
    Current Mode
    6.6mm
    3.44mm
    • RS 제품 번호 175-1735
    • 제조사 부품 번호 STCMB1
    개당가격(40개가 1튜브안에)
    ₩4,515.76
    STMicroelectronics
    -
    75 kHz
    100µA
    5mA
    100mA
    6 mA
    -
    -
    -
    1
    -
    Surface Mount
    SO
    -
    20
    -
    13 x 7.6 x 2.35mm
    -
    -
    -
    -
    -
    • RS 제품 번호 126-3180
    • 제조사 부품 번호 NCP12510ASN65T1G
    개당가격(20개가 1팩안에)
    ₩755.76
    onsemi
    -
    65 kHz
    -
    -
    -
    -
    8 to 14 V
    300 mA
    Current
    1
    30ns
    Surface Mount
    TSOP
    40ns
    6
    Flyback
    3.1 x 1.7 x 1mm
    84%
    3.1mm
    Current Mode
    1.7mm
    1mm
    • RS 제품 번호 920-8878
    • 제조사 부품 번호 VIPER22AS-E
    개당가격(100개가 1튜브안에)
    ₩1,827.36
    STMicroelectronics
    -
    60 kHz
    -
    -
    -
    -
    730 V
    -
    Current
    -
    100ns
    Surface Mount
    SOIC
    50ns
    8
    Forward
    5 x 4 x 1.65mm
    16%
    5mm
    Current Mode
    4mm
    1.65mm
    • RS 제품 번호 922-3451
    • 제조사 부품 번호 UC3843AD8
    개당가격(75개가 1튜브안에)
    ₩1,299.08
    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
    • RS 제품 번호 121-8957
    • 제조사 부품 번호 UC3846N
    개당가격(25개가 1튜브안에)
    ₩6,162.64
    Texas Instruments
    -
    500 kHz
    -
    -
    -
    -
    -
    500 mA
    Current
    2
    50ns
    Through Hole
    PDIP
    50ns
    16
    Boost, Buck, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
    19.3 x 6.35 x 4.57mm
    50%
    19.3mm
    Current Mode
    6.35mm
    4.57mm
    • RS 제품 번호 178-4682
    • 제조사 부품 번호 NCP12400CBAAB0DR2G
    개당가격(10개가 1팩안에)
    ₩1,178.76
    onsemi
    -
    65 kHz
    -
    -
    -
    -
    14 V
    300 mA, 500 mA
    Current
    1
    60ns
    Surface Mount
    SOIC
    70ns
    7
    Flyback
    5 x 4 x 1.5mm
    85%
    5mm
    Current Mode
    4mm
    1.5mm
    • RS 제품 번호 922-3457
    • 제조사 부품 번호 UC3825ADW
    개당가격(40개가 1튜브안에)
    ₩10,845.72
    Texas Instruments
    -
    1000 kHz
    -
    -
    -
    -
    -
    2 A
    Current, Voltage
    2
    20ns
    Surface Mount
    SOIC
    20ns
    16
    Boost, Flyback, Forward, Full Bridge, Half Bridge, Push-Pull
    10.28 x 7.52 x 2.35mm
    50%
    10.28mm
    Current Mode
    7.52mm
    2.35mm
    • RS 제품 번호 528-123
    • 제조사 부품 번호 TL494CN
    개당가격(25개가 1튜브안에)
    ₩481.28
    Texas Instruments
    -
    300 kHz
    -
    -
    -
    -
    40(Max) V
    200 (Max) mA
    -
    -
    -
    Through Hole
    PDIP
    -
    16
    -
    19.3 x 6.35 x 4.57mm
    -
    19.3mm
    -
    6.35mm
    4.57mm
    • RS 제품 번호 260-1180
    • 제조사 부품 번호 ICC80QSGXUMA1
    개당가격(5개가 1팩안에)
    ₩1,361.12
    Infineon
    -
    -
    30µA
    -
    -
    2 mA
    26 V
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS 제품 번호 184-8244
    • 제조사 부품 번호 BA17807CP-E2
    개당가격(5개가 1팩안에)
    ₩2,370.68
    ROHM
    -
    -
    -
    -
    -
    -
    7 V
    1 A
    -
    -
    -
    Through Hole
    TO-220CP
    -
    3
    -
    10 x 4.5 x 15.2mm
    -
    10mm
    Switching Regulator
    4.5mm
    15.2mm
    • RS 제품 번호 686-8433
    • 제조사 부품 번호 L6598
    개당가격(2개가 1팩안에)
    ₩3,628.40
    STMicroelectronics
    -
    400 kHz
    0.25mA
    250mA
    450mA
    25 mA
    -
    -
    -
    -
    -
    Through Hole
    PDIP
    -
    16
    -
    20 x 7.1 x 5.1mm
    -
    20mm
    Resonant
    7.1mm
    5.1mm
    • RS 제품 번호 380-044
    • 제조사 부품 번호 L5991D
    개당가격(5개가 1팩안에)
    ₩3,500.56
    STMicroelectronics
    -
    1000 kHz
    -
    -
    -
    -
    -
    1.5 A
    Current
    1
    35ns
    Surface Mount
    SOIC
    70ns
    16
    Boost, Flyback
    10 x 4 x 1.65mm
    -
    10mm
    Current Mode
    4mm
    1.65mm
    • RS 제품 번호 178-4476
    • 제조사 부품 번호 FAN65004B
    개당가격(10개가 1팩안에)
    ₩8,379.16
    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
    • RS 제품 번호 168-6083
    • 제조사 부품 번호 L6598D
    개당가격(50개가 1튜브안에)
    ₩3,323.84
    STMicroelectronics
    -
    400 kHz
    0.25mA
    250mA
    450mA
    25 mA
    -
    -
    -
    -
    -
    Surface Mount
    SOIC
    -
    16
    -
    10 x 4 x 1.64mm
    -
    10mm
    Resonant
    4mm
    1.64mm
    • RS 제품 번호 162-8997
    • 제조사 부품 번호 NCP1253BSN65T1G
    개당가격(3000개가 1릴안에)
    ₩357.20
    onsemi
    -
    65 kHz
    -
    -
    -
    -
    14 V
    500 mA
    Current
    1
    30ns
    Surface Mount
    TSOP
    40ns
    6
    Flyback
    3.1 x 1.7 x 1mm
    84%
    3.1mm
    Current Mode
    1.7mm
    1mm
    • RS 제품 번호 661-5333
    • 제조사 부품 번호 UC3843AD8
    개당가격(5개가 1팩안에)
    ₩1,763.44
    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
    • RS 제품 번호 460-960
    • 제조사 부품 번호 LM78S40CN/NOPB
    개당가격(5개가 1팩안에)
    ₩2,699.68
    Texas Instruments
    -
    100 kHz
    -
    -
    -
    -
    40 V
    -
    -
    1
    -
    Through Hole
    MDIP
    -
    16
    Buck
    19.05 x 6.35 x 3.3mm
    -
    19.05mm
    Voltage Mode
    6.35mm
    3.3mm
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