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$2.492
/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 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 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 528-123
製造零件編號TL494CN
HK$4.323
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 812-4378
製造零件編號UCD9224RGZT
HK$56.99
1 Tape of 1 Pack(s)
Tape(s)
2 MHz - - - 65 mA Yes Surface Mount QFN 48 7.15 x 7.15 x 0.95mm 7.15mm 7.15mm 0.95mm 3.6 V
RS庫存編號 170-8147
製造零件編號ISL8117FRZ-T7A
BrandIntersil
HK$28.069
個 (在毎卷:250)
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 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 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 121-8257
製造零件編號LM5022MM/NOPB
HK$10.227
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 527-322
製造零件編號UCC2808D-1
HK$22.68
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 145-7406
製造零件編號LT1241CS8#PBF
HK$32.222
毎管:100 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 162-9009
製造零件編號NCP3011DTBR2G
HK$4.55
個 (在毎卷:2500)
單位
400 kHz - 90µA 100µA 12 mA - Surface Mount TSSOP 14 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 28 V
RS庫存編號 168-4860
製造零件編號UCC2808D-1
HK$19.24
毎管:75 個
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 813-6633
製造零件編號LM25037QMT/NOPB
HK$33.525
/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 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 162-7999
製造零件編號UCD9224RGZT
HK$41.705
個 (在毎卷:250)
單位
2 MHz - - - 65 mA Yes Surface Mount QFN 48 7.15 x 7.15 x 0.95mm 7.15mm 7.15mm 0.95mm 3.6 V
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 -
RS庫存編號 162-7708
製造零件編號LM5046MH/NOPB
HK$43.29
毎管:48 個
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 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 -