直流變頻 PWM 電源控制模組 可調光調速

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直流變頻電源控制模組 可調光調速 link

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適用於DC12V電源的PWM變頻控制模組

電氣規格:
輸入電壓: DC12V +/- 3V
輸出電壓: DC12V 負極電源PWM脈波調變控制
輸出功率: 100W/8Amp(瞬間最大), 50W/4Amp(常態使用)

適用於使用電壓12V的直流風扇/抽水馬達/電燈等負載, 可調節電燈亮度或馬達風扇轉速.
安裝簡單, 只要將原電源線接於輸入端(INPUT), 輸出端(OUTPUT)再連接到負載即可 (注意電源 +/- 極性勿接反)

如果負載電流會超過4Amp時, 請注意Q1晶體散熱問題,並需在電源輸入端並接470uF/25V 以上的電解電容

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Power MOSFET : FAIRCHILD FDD8878
FDD8878 / FDU8878
N-Channel PowerTrench® MOSFET 30V, 40A, 15mΩ
Features
* rDS(ON) = 15mΩ, VGS = 10V, ID = 35A
* rDS(ON) = 18.5mΩ, VGS = 4.5V, ID = 35A
* High performance trench technology for extremely low rDS(ON)
* Low gate charge
* High power and current handling capability
* RoHS Compliant
* Package TO-252AA - pin (left to right) GDS
* Ciss = 880pF

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555 timer chip
Supply voltage (VCC) 4.5 to 15 V
Supply current (VCC = +5 V) 3 to 6 mA
Supply current (VCC = +15 V) 10 to 15 mA
Output current (maximum) 200 mA (pin 3)
Maximum Power dissipation 600 mW

The output of a standard 555 or 556 can sink and source up to 200mA. This is more than most ICs and it is sufficient to supply many output transducers directly, including LEDs (with a resistor in series), low current lamps, piezo transducers, loudspeakers (with a capacitor in series), relay coils (with diode protection) and some motors (with diode protection). The output voltage does not quite reach 0V and +Vs, especially if a large current is flowing.

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Power MOS FET
IRFP150 / 100V 42A(30A 100dC) / Rds(on) 0.055 ohm / Ciss 1900pf / TO-247 160w - pin GDS
IRFP064 / 60V 130A(95A 100dC)) / Rds 0.0055 ohm / Ciss 6760pf / TO-247AC 250w
IRF1405PBF / 55V 169A(118A 100dC) / Rds 0.0053 ohm / Ciss 5480pf / TO-220AB 330w
IRF1405Z / 55V 75A / Rds 0.0053 ohm / Ciss 5480pf / TO-220AB 230w
IRFB3207 / 75V 180A (130A 100dC) / Rds 0.0036 ohm / Ciss 7600pf / TO-220AB 330w / NT$30
IRFP3703 / 30V 210A(100A 100dC) / Rds=0.0028 ohm / Ciss 8250pf / TO-247AC 230w
ST STP75NF75 TO-220AB (N-CH) 75V 80A / 0.011Ω 300W / 3700pf / NT$25
ST STP270N4F3 TO-220AB (N-CH) 40V 120A 0.0029Ω 330W / 7400pf / NT$30
NXP PSMN015-110P TO-220AB (N-CH) 110V 75A 0.015Ω 300W / 4900pf / NT$28