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 162-9586
製造零件編號NCV494BDR2G
HK$6.478
個 (在毎卷:2500)
單位
200 kHz 7mA -4µA 0.7µA 15 mA - Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V
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 821-5216
製造零件編號NCP1351BDR2G
HK$3.614
/個 (每包:20個)
單位
65 kHz 10µA 289µA - 20 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 22 V
RS庫存編號 786-2533
製造零件編號NCV494BDR2G
HK$5.108
/個 (每包:5個)
單位
200 kHz 7mA -4µA 0.7µA 15 mA - Surface Mount SOIC 16 10 x 4 x 1.5mm 10mm 4mm 1.5mm 40 V
RS庫存編號 162-9515
製造零件編號NCP3020ADR2G
HK$3.78
個 (在毎卷:2500)
單位
350 kHz 5.5mA 100µA 100µA 8 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 28 V
RS庫存編號 145-4652
製造零件編號KA7552A
HK$5.321
毎管:50 個
單位
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庫存編號 786-2451
製造零件編號NCP3020ADR2G
HK$5.92
/個 (每包:10個)
單位
350 kHz 5.5mA 100µA 100µA 8 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 28 V
RS庫存編號 162-9674
製造零件編號TL494CDR2G
HK$2.611
個 (在毎卷:2500)
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 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 747-0976
製造零件編號NCP3030BDR2G
HK$5.875
/個 (每包:2個)
單位
2.4 MHz 10.3mA 100µA 100µA 17.4 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 28 V
RS庫存編號 145-4653
製造零件編號KA7553A
HK$2.919
毎管:50 個
單位
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庫存編號 122-0092
製造零件編號MC34025DWR2G
HK$16.075
個 (在毎卷:1000)
單位
1 MHz - - - - - Surface Mount SOIC W 16 10.45 x 7.6 x 2.4mm 10.45mm 7.6mm 2.4mm 30 V
RS庫存編號 862-9375
製造零件編號KA7552A
HK$4.14
/個 (每包:10個)
單位
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 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 862-9384
製造零件編號KA7553A
HK$5.625
/個 (每包:10個)
單位
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 163-0079
製造零件編號NCP1351BDR2G
HK$4.606
個 (在毎卷:2500)
單位
65 kHz 10µA 289µA - 20 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 22 V