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 121-9015
製造零件編號LM5072MH-80/NOPB
HK$34.503
毎管:92 個
單位
- - - - 3 mA - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 5mm 4.4mm 0.9mm 15 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 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 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 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 829-0113
製造零件編號MCP19114-E/MJ
BrandMicrochip
HK$29.76
單位
- - - - - - Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm -
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 121-7263
製造零件編號ISL68201IRZ-T7A
BrandIntersil
HK$45.87
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 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 162-8863
製造零件編號UCC28251RGPT
HK$32.968
個 (在毎卷:250)
單位
1.8 MHz 275µA 8mA 9mA 275 μA Yes Surface Mount QFN 20 4.15 x 4.15 x 0.95mm 4.15mm 4.15mm 0.95mm 17 V
RS庫存編號 168-8876
製造零件編號SG2525AN
HK$10.392
毎管:25 個
單位
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庫存編號 389-299
製造零件編號UCC28600D
HK$11.20
/個 (每包:5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 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 655-4389
製造零件編號LM5026MT/NOPB
HK$25.322
/個 (每包:5個)
單位
590 kHz - - - - - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 5mm 4.4mm 0.9mm -
RS庫存編號 796-9489
製造零件編號TS19375CS RLG
HK$5.499
/個 (每包:10個)
單位
500 kHz 8µA - - 20 μA - Surface Mount SOP 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 24 V
RS庫存編號 170-8155
製造零件編號ISL68127IRAZ-T7A
BrandIntersil
HK$84.72
個 (在毎卷:250)
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 170-8156
製造零件編號ISL68134IRAZ-T7A
BrandIntersil
HK$70.429
個 (在毎卷:250)
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 145-1142
製造零件編號LM2524DN/NOPB
HK$34.268
毎管:25 個
單位
350 kHz - -65µA 125µA - - Through Hole PDIP 16 19.05 x 6.35 x 0.38mm 19.05mm 6.35mm 0.38mm 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