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 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 165-2082
製造零件編號MCP1631-E/ML
BrandMicrochip
HK$10.78
毎管:91 個
單位
2 MHz - -9.8mA 12mA - - Surface Mount QFN 20 4 x 4 x 1mm 4mm 4mm 1mm 5.5 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 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 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 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 162-8185
製造零件編號LM25037QMT/NOPB
HK$28.478
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 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 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 145-1180
製造零件編號SG2524D
HK$4.229
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 661-6875
製造零件編號TL494IDR
HK$4.512
/個 (每包:5個)
單位
300 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 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
RS庫存編號 125-0802
製造零件編號ISL68127IRAZ-T7A
BrandIntersil
HK$86.05
單位
1000 kHz - - - 90.5 mA - Surface Mount QFN 48 6 x 6 x 0.95mm 6mm 6mm 0.95mm +3.3 V
RS庫存編號 170-8138
製造零件編號ISL68201IRZ-T7A
BrandIntersil
HK$29.78
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 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 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 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 162-5092
製造零件編號LM5026MT/NOPB
HK$23.128
毎管:92 個
單位
590 kHz - - - - - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 5mm 4.4mm 0.9mm -