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 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 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
RS庫存編號 178-9135
製造零件編號SG3524D
HK$10.751
毎管:40 個
單位
450 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 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 145-0921
製造零件編號LM5070MTC-50/NOPB
HK$22.742
毎管:92 個
單位
- - 800mA 800mA 3 mA - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 5mm 4.4mm 0.9mm 75 V
RS庫存編號 774-7422
製造零件編號MCP1630V-E/MS
BrandMicrochip
HK$8.49
個 (以毎袋:5)
單位
1 MHz - -9mA 11mA 4.5 mA - Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V
RS庫存編號 177-7275
製造零件編號LT1245CS8#PBF
HK$38.672
毎管:100 個
單位
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 170-8138
製造零件編號ISL68201IRZ-T7A
BrandIntersil
HK$31.983
個 (在毎卷:250)
單位
1.5 MHz - - - - Yes Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm 24 V
RS庫存編號 121-9013
製造零件編號UCC2895DW
HK$55.884
毎管:25 個
單位
1 MHz 150µA - - - - Surface Mount SOIC 20 12.8 x 7.52 x 2.35mm 12.8mm 7.52mm 2.35mm 16.5 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 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 166-0829
製造零件編號ICE2QS03GXUMA1
BrandInfineon
HK$8.939
個 (在毎卷:2500)
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 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 517-0716
製造零件編號SG2524D
HK$8.108
/個 (每包:5個)
單位
450 kHz - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm 40 V