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CYT4BB7 microcontroller

Overview

I. Schematic Design:
Peripheral Interfaces, Buzzer,

Motor Interface, Encoder Interface

, Buttons, Five-Phase Switch ,

Current Detection

Input Power.
A PMOS fireproof switching power supply is used, regulated by a Zener diode.

Servo
Power Supply: The servo voltage also uses an SCT2450 power chip. Since an SD-7 servo is used, a 20kΩ resistor is used for the feedback ground terminal, allowing for a 6.2V output. Testing showed that the servo exhibits high torque and fast response at 6.2V.

12V to 5V:
The 5V output circuit uses an SCT2450 power chip, characterized by high efficiency, low ripple, and high reliability.

5V to 3.3V and
3V3 op-amp power supply section uses the RT9031-3V3, which is small in size and has low output ripple, making it suitable for designing small circuit boards. II. PCB Design:

Peripheral Power Supply

Core Board. III. Physical Sample.

Design Files

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Update:2026-03-27 02:15:37

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