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 779-9164
製造零件編號LT1241CS8#PBF
HK$29.435
/個 (每包:2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 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
RS庫存編號 170-8146
製造零件編號ISL8117AFRZ-T7A
BrandIntersil
HK$28.24
個 (在毎卷:250)
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 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 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 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 165-4207
製造零件編號MCP19114-E/MJ
BrandMicrochip
HK$25.023
毎管:91 個
單位
- - - - - - Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm -
RS庫存編號 824-6914
製造零件編號LM5039MH/NOPB
HK$38.45
/個 (每包:2個)
單位
2 MHz 70µA 6mA 2A 6 mA Yes Surface Mount HTSSOP 20 6.5 x 4.4 x 0.9mm 6.5mm 4.4mm 0.9mm 105 V
RS庫存編號 168-6083
製造零件編號L6598D
HK$17.20
毎管:50 個
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 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 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 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 145-4652
製造零件編號KA7552A
HK$5.321
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 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 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 779-9173
製造零件編號LT1245CS8#PBF
HK$33.42
/個 (每包:2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 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 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 811-5661
製造零件編號LM5046MH/NOPB
HK$48.78
單位
540 kHz 80mA 1.5A 2A 4.6 mA Yes Surface Mount HTSSOP 28 9.7 x 4.4 x 0.9mm 9.7mm 4.4mm 0.9mm 100 V
RS庫存編號 162-4341
製造零件編號TL5001CP
HK$9.67
毎管:50 個
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 -