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 162-9515
製造零件編號NCP3020ADR2G
HK$3.41
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 168-6471
製造零件編號L6598
HK$17.20
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 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 175-1178
製造零件編號STCH03TR
HK$9.656
/個 (每包:10個)
單位
196 kHz 0.9mA - - 2.9 mA Yes Surface Mount SO8 8 5 x 6.2 x 1.5mm 5mm 4mm 1.5mm 23 V
RS庫存編號 526-937
製造零件編號SG2524N
HK$7.239
/個 (每包:10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 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 761-5980
製造零件編號LM5070MTC-50/NOPB
HK$26.28
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 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 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 809-5393
製造零件編號TL494CNSR
HK$4.19
/個 (每包:5個)
單位
300 kHz 9 → 15mA 200mA 200mA 3.5 mA Yes Surface Mount SOIC 16 10.5 x 5.6 x 1.85mm 10.5mm 5.6mm 1.85mm 40 V
RS庫存編號 168-5127
製造零件編號TL1451ACD
HK$10.404
毎管:40 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 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 661-8449
製造零件編號TL1451ACPW
HK$19.49
單位
- - - - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS庫存編號 462-1083
製造零件編號TL1451ACD
HK$13.614
/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 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 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 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 828-7444
製造零件編號AP3105NVKTR-G1
HK$1.398
/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
RS庫存編號 200-6779
製造零件編號TL5001CP
HK$16.76
單位
500 kHz - - - 2.1 mA - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS庫存編號 462-2418
製造零件編號TL5001ACD
HK$17.60
/個 (每包:5個)
單位
- - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -