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Amplificator de putere , clasa D. |
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Written by Administrator
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Saturday, 21 June 2008 |
Amplificator de putere in clasa D, realizat cu integratul IRF2011 (MOSFET driver ), avand ca finali IRFB23N15D.
Blocurile care formeaza amplificatorul sunt marcate prin linii punctate.
Integratul preamplificator IC LT1229CS8 are parametrii :
Gain-Bandwidth: 45MHz
Unity-Gain Stable
Slew Rate: 250V/µs
C-Load TM Op Amp Drives Capacitive Loads
Maximum Input Offset Voltage: 1mV
Maximum Input Bias Current: 300nA
Maximum Input Offset Current: 300nA
Minimum Output Swing Into 500 ohms: ±12V
Minimum DC Gain: 20V/mV, RL = 500 ohms
Settling Time to 0.1%: 75ns, 10V Step
Settling Time to 0.01%: 95ns, 10V Step
Differential Gain: 0.1%, AV = 2, RL = 150 ohms
Differential Phase: 0.2°, AV = 2, RL = 150 ohms
Parametrii tranzistoarelor finale se gasesc la :
http://www.tranzistoare.ro/datasheets/150/284212_DS.pdf
Sursa: infoelectronica.ro
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Variator de turatie la motor