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 162-9675
製造零件編號TL594CDR2G
HK$2.59
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 786-2552
製造零件編號TL594CDR2G
HK$5.96
/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 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 517-2986
製造零件編號TL494IN
HK$4.92
/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 528-123
製造零件編號TL494CN
HK$5.116
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 125-0803
製造零件編號ISL68134IRAZ-T7A
BrandIntersil
HK$84.29
單位
1000 kHz - - - 63 mA - Surface Mount TQFN 40 5 x 5 x 0.7mm 5mm 5mm 0.7mm +3.3 V
RS庫存編號 168-4856
製造零件編號SG2524N
HK$7.849
毎管:25 個
單位
450 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 517-0716
製造零件編號SG2524D
HK$10.042
/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
RS庫存編號 761-5980
製造零件編號LM5070MTC-50/NOPB
HK$31.15
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 121-9385
製造零件編號UCC28950PW
HK$57.127
毎管:60 個
單位
1 MHz 270µA -0.5mA 5.75mA 10 mA Yes Surface Mount TSSOP 24 7.9 x 4.5 x 1.05mm 7.9mm 4.5mm 1.05mm 17 V
RS庫存編號 527-322
製造零件編號UCC2808D-1
HK$23.84
單位
1 MHz - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 15 V
RS庫存編號 828-7441
製造零件編號AP3105NAKTR-G1
HK$2.412
/個 (每包:25個)
單位
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
全新
RS庫存編號 197-7629
製造零件編號UCC3895DW
HK$61.504
毎管:25 個
單位
500 KHz 0.25mA - - 30 mA - - SOIC 20 - - - - -
RS庫存編號 170-8911
製造零件編號AP3105NVKTR-G1
HK$1.617
個 (在毎卷:3000)
單位
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
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
RS庫存編號 166-0829
製造零件編號ICE2QS03GXUMA1
BrandInfineon
HK$8.045
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 121-8257
製造零件編號LM5022MM/NOPB
HK$13.749
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 125-0802
製造零件編號ISL68127IRAZ-T7A
BrandIntersil
HK$92.16
單位
1000 kHz - - - 90.5 mA - Surface Mount QFN 48 6 x 6 x 0.95mm 6mm 6mm 0.95mm +3.3 V
RS庫存編號 526-947
製造零件編號SG2524DR
HK$4.352
/個 (每包:10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 165-2082
製造零件編號MCP1631-E/ML
BrandMicrochip
HK$10.78
毎管:91 個
單位
2 MHz - -9.8mA 12mA - - Surface Mount QFN 20 4 x 4 x 1mm 4mm 4mm 1mm 5.5 V