U2 current source programmed by U1 PWM DAC and powered by U3 tracking preregulator

Authors	Stephen Woodward
Main Document	Article «1 A, 20V PWM DAC current source with tracking preregulator»
Description	Figure 3
File Format / Size	PDF / 21 Kb
Document Language	English

Other Materials from the Main Document

Article «1 A, 20V PWM DAC current source with tracking preregulator»

Figure 1. A classic LM317 constant current source where: I_OUT = V_ADJ/R_S = 1.25 V/R_S
Figure 2. A modification that makes the current source variable where: I_OUT = (V_ADJ - I_CR_C)/R_S - IC
Figure 3. U2 current source programmed by U1 PWM DAC and powered by U3 tracking preregulator

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Microcontrollers