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 786-2552
製造零件編號TL594CDR2G
HK$5.841
/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 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 528-123
製造零件編號TL494CN
HK$5.116
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 121-6370
製造零件編號NCP1031DR2G
HK$8.055
個 (在毎卷:2500)
單位
325 kHz 3mA 140µA 900µA 4 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 16 V
RS庫存編號 125-0801
製造零件編號ISL68124IRAZ-T7A
BrandIntersil
HK$78.08
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 162-7708
製造零件編號LM5046MH/NOPB
HK$47.461
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 655-4389
製造零件編號LM5026MT/NOPB
HK$29.61
/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 200-6779
製造零件編號TL5001CP
HK$17.36
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 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 786-2451
製造零件編號NCP3020ADR2G
HK$7.046
/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 162-8594
製造零件編號LM5039MH/NOPB
HK$36.897
毎管:73 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 828-7444
製造零件編號AP3105NVKTR-G1
HK$4.732
/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 145-1180
製造零件編號SG2524D
HK$8.222
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 527-322
製造零件編號UCC2808D-1
HK$23.66
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 170-8156
製造零件編號ISL68134IRAZ-T7A
BrandIntersil
HK$59.991
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 177-7275
製造零件編號LT1245CS8#PBF
HK$38.672
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 170-8910
製造零件編號AP3105NAKTR-G1
HK$1.852
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 175-1178
製造零件編號STCH03TR
HK$10.065
/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 162-8185
製造零件編號LM25037QMT/NOPB
HK$31.193
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 175-1176
製造零件編號STCH03TR
HK$5.094
個 (在毎卷:2500)
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