PWM Controllers

Pulse width modulation (PWM) is a modulation technique that is used to encode a message into a pulsing signal. PWM controllers encode data onto the duty cycle (the ratio or percentage of one period in which a signal or system is active). The encoded data is commonly used in power electronic systems to regulate the amount of power applied to the load.

How do PWM controllers work?
A PMC will use voltage feedback to ensure that the voltage applied to a load is precisely controlled. The controller will supervise the switching operation to regulate the output voltage by comparing output voltage with the desired output to derive the correct voltage. They are popular because of their high efficiency over a wide voltage input range.

A PWM controller can also be integrated with a hot swap controller for enhanced power monitoring accuracy.

What are PWM controllers used for?
PWM controllers are common in many applications including variable speed fans, house dimmer switches and electric cookers.
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detalji proizvoda Proizvođač Maximum Switching Frequency Start-up Supply Current Maximum Source Current Maximum Sink Current Maximum Supply Current Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Number of Outputs Maximum Operating Temperature Minimum Operating Supply Voltage Output Current Output Voltage Input Voltage Minimum Operating Temperature
Linear Technology LT1245CS8#PBF, PWM Controller 500 kHz 8-Pin, SOIC Linear Technology 500 kHz 250µA -0.75mA 10mA 1 A Surface Mount SOIC 8 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 5.075 V - +100 °C 4.925 V - - - 0 °C
Taiwan Semiconductor TS19375CS RLG, PWM Controller 500 kHz 8-Pin, SOP Taiwan Semiconductor 500 kHz 8µA - - 20 μA Surface Mount SOP 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 24 V - +125 °C 3 V - - - -20 °C
ON Semiconductor KA7553A, SMPS Controller 600 kHz 8-Pin, PDIP ON Semiconductor 600 kHz 15mA -5µA 65µA 1.8 mA Through Hole PDIP 8 9.6 x 6.4 x 3.4mm 9.6mm 6.4mm 3.4mm 30 V - +85 °C - - - - -25 °C
ON Semiconductor FLS0116MX, PWM Controller 300 kHz 7-Pin, SOIC ON Semiconductor 300 kHz 150µA - - 1.2 mA Surface Mount SOIC 7 5 x 4 x 1.5mm 5mm 4mm 1.5mm 17 V - +125 °C 14 V - - - -40 °C
DiodesZetex AP3105NVKTR-G1, PWM Controller 70 kHz 6-Pin, SOT-23 DiodesZetex 70 kHz 20µA 110µA - 2 mA Surface Mount SOT-23 6 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 25 V - +150 °C 10 V - - - -40 °C
ON Semiconductor NCV494BDR2G, PWM Controller 200 kHz 16-Pin, SOIC ON Semiconductor 200 kHz 7mA -4µA 0.7µA 15 mA Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V - +125 °C 7 V - - - -40 °C
Texas Instruments TL1451ACPWR, PWM Controller 500 kHz 16-Pin, TSSOP Texas Instruments 500 kHz - -20µA 1.6mA 1.8 mA Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 50 V - +85 °C 3.6 V - - - -20 °C
Texas Instruments TL494CN, PWM Controller 300 kHz 16-Pin, PDIP Texas Instruments 300 kHz - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V - +70 °C 7 V 200 (Max) mA 40(Max) V - 0 °C
ON Semiconductor NCP1031DR2G, PWM Controller 325 kHz 8-Pin, SOIC ON Semiconductor 325 kHz 3mA 140µA 900µA 4 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 16 V - +150 °C -0.3 V - - - -40 °C
ON Semiconductor TL594CDR2G, PWM Controller 300 kHz 16-Pin, SOIC ON Semiconductor 300 kHz 8mA -4mA 0.7mA 18 mA Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V - +85 °C 7 V - - - -40 °C
DiodesZetex AP3105NAKTR-G1, PWM Controller 70 kHz 6-Pin, SOT-23 DiodesZetex 70 kHz 20µA 110µA - 2 mA Surface Mount SOT-23 6 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm 25 V - +150 °C 10 V - - - -40 °C
ON Semiconductor NCP3020ADR2G, PWM Controller 350 kHz 8-Pin, SOIC ON Semiconductor 350 kHz 5.5mA 100µA 100µA 8 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 28 V - +140 °C 4.7 V - - - -40 °C
Microchip MCP1630V-E/MS, PWM Controller 1 MHz 8-Pin, MSOP Microchip 1 MHz - -9mA 11mA 4.5 mA Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V - +125 °C 3 V - - - -40 °C
Texas Instruments TL494IN, PWM Controller 300 kHz 16-Pin, PDIP Texas Instruments 300 kHz - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V - +85 °C 7 V 200 (Max) mA 40(Max) V - -40 °C
ON Semiconductor TL494CDR2G, PWM Controller 200 kHz 16-Pin, SOIC ON Semiconductor 200 kHz 7mA -4mA 0.7mA 15 mA Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V - +70 °C 7 V - - - 0 °C
Texas Instruments SG2524D, PWM Controller 450 kHz 16-Pin, SOIC Texas Instruments 450 kHz - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V - +85 °C 8 V 100 (Max) mA - - -25 °C
ON Semiconductor NCP3011DTBR2G, PWM Controller 400 kHz 14-Pin, TSSOP ON Semiconductor 400 kHz - 90µA 100µA 12 mA Surface Mount TSSOP 14 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 28 V - +140 °C 4.5 V - - - -40 °C
Intersil ISL8117FRZ-T7A, PWM Controller 2375 kHz 16-Pin, QFN Intersil 2375 kHz - 2A 2A 4 mA Surface Mount QFN 16 4 x 4 x 0.9mm 4mm 4mm 0.9mm 60 V 1 +125 °C 4.5 V 30 A 54 V 60V -40 °C
Texas Instruments TL494IDR, DC-DC Controller 300 kHz 16-Pin, SOIC Texas Instruments 300 kHz - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V - +85 °C 7 V 200 mA 40 V - -40 °C
Intersil ISL68127IRAZ-T7A, Digital Controller 1000 kHz 48-Pin, QFN Intersil 1000 kHz - - - 90.5 mA Surface Mount QFN 48 6 x 6 x 0.95mm 6mm 6mm 0.95mm +3.3 V 2 +85 °C - 450 A 3.05 V 18V -40 °C
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