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 462-1083
製造零件編號TL1451ACD
HK$14.76
/個 (每包:5個)
單位
- - - - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm 1.58mm -
RS庫存編號 162-8185
製造零件編號LM25037QMT/NOPB
HK$31.189
毎管:92 個
單位
578 kHz 80µA 1.2A 1.2A 4 mA - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 75 V
RS庫存編號 517-2150
製造零件編號SG3524D
HK$8.97
/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 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 121-7272
製造零件編號ISL8117AFRZ-T7A
BrandIntersil
HK$37.86
單位
2375 kHz - 2A 4A 4 mA Yes Surface Mount QFN 16 4 x 4 x 0.9mm 4mm 4mm 0.9mm 60 V
RS庫存編號 162-4865
製造零件編號TL5001ACD
HK$12.773
毎管:75 個
單位
- - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS庫存編號 527-322
製造零件編號UCC2808D-1
HK$24.63
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 168-6471
製造零件編號L6598
HK$17.555
毎管:25 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 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 121-7273
製造零件編號ISL8117FRZ-T7A
BrandIntersil
HK$46.93
單位
2375 kHz - 2A 2A 4 mA Yes Surface Mount QFN 16 4 x 4 x 0.9mm 4mm 4mm 0.9mm 60 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 813-6633
製造零件編號LM25037QMT/NOPB
HK$38.608
/個 (每包:4個)
單位
578 kHz 80µA 1.2A 1.2A 4 mA - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 75 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 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 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 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 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 155-7734
製造零件編號LTC3723EGN-1#PBF
HK$60.27
毎管:100 個
單位
1 MHz 230µA 700µA 5mA 8 mA - Surface Mount SSOP 16 4.978 x 3.988 x 1.501mm 4.98mm 3.988mm 1.501mm 9.5 V
RS庫存編號 170-4118
製造零件編號TS19375CS RLG
HK$4.405
個 (在毎卷:2500)
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 126-2018
製造零件編號MCP19124-E/MJ
BrandMicrochip
HK$30.75
單位
2 MHz - 0.5 A, 1 A 0.5 A, 1 A - - Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm 42 V