Memory power controller (MAX8550) (Samsung Q35 laptop)

Memory power controller (MAX8550) ( Samsung Q35 laptop)

Shown is a control circuit for notebook computer memory power supply. It uses MAC8550 as the control chip. This chip can also
be used in desktop computers or graphics cards and other products.
    Since the power supply voltage value required by the memory
circuit has a high accuracy (+2.5 V), and the battery supply voltage accuracy is low and will decrease with time, the working accuracy and voltage stability of the voltage stabilizing circuit are both poor. The requirements are higher.
    The MAX8550 also uses pulse width modulation (PWM), and outputs a set of pulse width modulation signals with opposite phases from the DH terminal and the DL terminal.
Drive Q1 and Q2 respectively. Make Q] and Q2 work alternately to change the DC voltage of the battery into a high-frequency pulse voltage. Finally, after LC filtering,
the DC regulated current is output. The output current of this circuit can reach 12A.