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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Description Price Maximum Switching Frequency Start-up Supply Current Maximum Source Current Maximum Sink Current Maximum Supply Current Zero Power Detection Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage
RS Stock No. 528-123
Mfr. Part No.TL494CN
£0.49
Each (In a Tube of 25)
Units
300 kHz - - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V
RS Stock No. 162-4341
Mfr. Part No.TL5001CP
£1.411
Each (In a Tube of 50)
Units
500 kHz - - - 2.1 mA - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS Stock No. 200-6779
Mfr. Part No.TL5001CP
£2.47
Each
Units
500 kHz - - - 2.1 mA - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS Stock No. 181-348
Mfr. Part No.LM5022MM/NOPB
£2.332
Each (In a Pack of 5)
Units
2 MHz - - - 4 mA - Surface Mount MSOP 10 3 x 3 x 0.86mm 3mm 3mm 0.86mm -
RS Stock No. 121-8257
Mfr. Part No.LM5022MM/NOPB
£0.975
Each (On a Reel of 1000)
Units
2 MHz - - - 4 mA - Surface Mount MSOP 10 3 x 3 x 0.86mm 3mm 3mm 0.86mm -
RS Stock No. 862-9375
Mfr. Part No.KA7552A
£0.658
Each (In a Pack of 10)
Units
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
RS Stock No. 145-4652
Mfr. Part No.KA7552A
£0.598
Each (In a Tube of 50)
Units
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
RS Stock No. 168-8876
Mfr. Part No.SG2525AN
£0.951
Each (In a Tube of 25)
Units
400 kHz 80µA 400mA 400mA 20 mA - Through Hole PDIP 16 20 x 7.1 x 5.1mm 20mm 7.1mm 5.1mm 35 V
RS Stock No. 145-7406
Mfr. Part No.LT1241CS8#PBF
£2.594
Each (In a Tube of 100)
Units
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
RS Stock No. 415-1045
Mfr. Part No.L6598D
£2.00
Each
Units
400 kHz 0.25mA 250mA 450mA 25 mA - Surface Mount SOIC 16 10 x 4 x 1.64mm 10mm 4mm 1.64mm 16.6 V
RS Stock No. 779-9164
Mfr. Part No.LT1241CS8#PBF
£4.285
Each (In a Pack of 2)
Units
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
RS Stock No. 168-6083
Mfr. Part No.L6598D
£1.617
Each (In a Tube of 50)
Units
400 kHz 0.25mA 250mA 450mA 25 mA - Surface Mount SOIC 16 10 x 4 x 1.64mm 10mm 4mm 1.64mm 16.6 V
RS Stock No. 877-2826
Mfr. Part No.SG2525AN
£1.046
Each (In a Pack of 10)
Units
400 kHz 80µA 400mA 400mA 20 mA - Through Hole PDIP 16 20 x 7.1 x 5.1mm 20mm 7.1mm 5.1mm 35 V
RS Stock No. 121-9164
Mfr. Part No.TL494IDR
£0.167
Each (On a Reel of 2500)
Units
300 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V
RS Stock No. 661-6875
Mfr. Part No.TL494IDR
£0.51
Each (In a Pack of 5)
Units
300 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V
RS Stock No. 110-9090
Mfr. Part No.ICE2QS03GXUMA1
BrandInfineon
£0.368
Each (In a Pack of 10)
Units
65 kHz 550µA - - 2.3 mA Yes Surface Mount DSO 8 5 x 4 x 1.65mm 5mm 4mm 1.65mm 27 V
RS Stock No. 517-2150
Mfr. Part No.SG3524D
£0.922
Each (In a Pack of 5)
Units
450 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V
RS Stock No. 166-0829
Mfr. Part No.ICE2QS03GXUMA1
BrandInfineon
£0.377
Each (On a Reel of 2500)
Units
65 kHz 550µA - - 2.3 mA Yes Surface Mount DSO 8 5 x 4 x 1.65mm 5mm 4mm 1.65mm 27 V
RS Stock No. 178-9135
Mfr. Part No.SG3524D
£0.891
Each (In a Tube of 40)
Units
450 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V
RS Stock No. 145-1163
Mfr. Part No.UCC28600D
£1.078
Each (In a Tube of 75)
Units
130 kHz - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 21 V
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The isolated-flyback power supply controller provides Constant-Voltage (CV) ...
Description:
The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler. Current-Mode and Voltage-Mode PWM Controller Primary-Side Regulation Peak Power Mode Low Power.
The isolated-flyback power supply controller provides Constant-Voltage (CV) ...
Description:
The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler. Current-Mode and Voltage-Mode PWM Controller Primary-Side Regulation Peak Power Mode Low Power.
The isolated-flyback power supply controller provides Constant-Voltage (CV) ...
Description:
The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler. Current-Mode and Voltage-Mode PWM Controller Primary-Side Regulation Peak Power Mode Low Power.
The ISL6820x are Single Phase R4 Digital Hybrid ...
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