4.DC-DC转换器的恒流源控制Constant Current Control for DC-DC Converters Introduction ................................................................1 The pull up / down network (Ru, Rd and Rs) allows the error amplifier to vary the output of the converter by trim- Theory of Operation...................................................1 ming the SC / TRIM pin while keeping the pin from being Power Limitations .......................................................1 driven too high or too low. Voltage Loop Stability ................................................2 The diode in series with the positive lead isolates the Current Loop Compensat……