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庫存編號 786-2552
製造零件編號TL594CDR2G
HK$2.492
/個 (每包:10個)
單位
300 kHz 8mA -4mA 0.7mA 18 mA - Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V
RS庫存編號 162-9675
製造零件編號TL594CDR2G
HK$3.229
個 (在毎卷:2500)
單位
300 kHz 8mA -4mA 0.7mA 18 mA - Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V
RS庫存編號 517-2986
製造零件編號TL494IN
HK$5.38
/個 (每包:5個)
單位
300 kHz - - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V
RS庫存編號 920-3479
製造零件編號TL494IN
HK$4.307
毎管:25 個
單位
300 kHz - - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V
RS庫存編號 528-123
製造零件編號TL494CN
HK$4.323
毎管:25 個
單位
300 kHz - - - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 40 V
RS庫存編號 168-6083
製造零件編號L6598D
HK$17.552
毎管:50 個
單位
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庫存編號 786-2543
製造零件編號TL494CDR2G
HK$4.78
/個 (每包:10個)
單位
200 kHz 7mA -4mA 0.7mA 15 mA - Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V
RS庫存編號 415-1045
製造零件編號L6598D
HK$25.53
單位
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庫存編號 162-9009
製造零件編號NCP3011DTBR2G
HK$5.04
個 (在毎卷:2500)
單位
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
RS庫存編號 661-6875
製造零件編號TL494IDR
HK$4.512
/個 (每包:5個)
單位
300 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm -
RS庫存編號 786-2445
製造零件編號NCP1031DR2G
HK$10.60
/個 (每包:2個)
單位
325 kHz 3mA 140µA 900µA 4 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 16 V
RS庫存編號 825-3533
製造零件編號TL1451ACPWR
HK$12.272
/個 (每包:5個)
單位
500 kHz - -20µA 1.6mA 1.8 mA Yes Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 50 V
RS庫存編號 110-9090
製造零件編號ICE2QS03GXUMA1
BrandInfineon
HK$10.034
/個 (每包:10個)
單位
65 kHz 550µA - - 2.3 mA Yes Surface Mount DSO 8 5 x 4 x 1.65mm 5mm 4mm 1.65mm 27 V
RS庫存編號 145-1163
製造零件編號UCC28600D
HK$8.055
毎管:75 個
單位
130 kHz - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 21 V
RS庫存編號 121-8257
製造零件編號LM5022MM/NOPB
HK$12.85
個 (在毎卷:1000)
單位
2 MHz - - - 4 mA - Surface Mount MSOP 10 3 x 3 x 0.86mm 3mm 3mm 0.86mm -
RS庫存編號 178-8826
製造零件編號TL1451ACPWR
HK$16.415
毎管:90 個
單位
500 kHz - -20µA 1.6mA 1.8 mA Yes Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 50 V
RS庫存編號 864-4746
製造零件編號FLS0116MX
HK$4.675
個 (在毎卷:2500)
單位
300 kHz 150µA - - - - Surface Mount SOIC 7 5 x 4 x 1.5mm 5mm 4mm 1.5mm 20 V
RS庫存編號 686-8433
製造零件編號L6598
HK$21.86
/個 (每包:2個)
單位
400 kHz 0.25mA 250mA 450mA 25 mA - Through Hole PDIP 16 20 x 7.1 x 5.1mm 20mm 7.1mm 5.1mm 16.6 V
RS庫存編號 774-1098
製造零件編號FLS0116MX
HK$9.28
個 (以毎袋:2)
單位
300 kHz 150µA - - 1.2 mA - Surface Mount SOIC 7 5 x 4 x 1.5mm 5mm 4mm 1.5mm 17 V
RS庫存編號 168-4857
製造零件編號SG2524DR
HK$3.354
個 (在毎卷:2500)
單位
450 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V