JUN YOUNG KIM

Electrical_Engineering_Student

PCB_PROJECTS

USB-C Power Meter

KICAD

May 2026 — In Progress

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Project Objective:

To design a compact USB-C passthrough power meter capable of real-time voltage, current, and power monitoring across a wide range (0.3V–48V, 5A), displayed on an integrated OLED screen.

Description:

  • INA238 16-bit high-precision power monitor for voltage and current sensing
  • STM32G030 microcontroller for measurement processing and display control
  • SSD1315 128×64 OLED display with I2C interface and dedicated 3.8V boost supply
  • Measurement range: 0.3V–48V input, up to 5A continuous current
  • USB-C male/female passthrough connectors with full signal passthrough
  • Onboard VBUS-to-3.3V buck regulator powering MCU and peripherals
  • Menu navigation buttons, power switch, buzzer, and SWD debug header

DRAWBRIDGE - FT2232H B2B Connect FPGA Debugger

ALTIUM DESIGNER

July 2025

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Project Objective:

Develop a small formfactor quick connect B2B T120 FPGA Debugger using the FT2232H dual-channel USB-to-serial converter.

Description:

  • Designed USB-to-FPGA debugger using FT2232H dual-channel USB-to-serial converter
  • Implemented B2B connector interface for VITracker FPGA hand tracking device
  • Converted USB differential signaling to SPI and JTAG protocols
  • Integrated 2KBIT EEPROM for FT2232H configuration
  • Implemented MPSSE controller for flexible protocol support at 120MHz
  • Designed compact 4-layer PCB layout optimizing signal integrity

MSXV Battery Management System Carrier

ALTIUM DESIGNER

October 2024 - November 2024

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View in Altium 365 Download LTSpice Simulation

Project Objective:

To optimize the 15th Midnight Sun Solar Race Car's battery management system (BMS) by redesigning the battery management carrier PCB layout and schematic, merging the existing motor controller interface (MCI) board functionalities into the BMS carrier board.

Description:

  • Consolidated the motor controller interface board into the BMS carrier board
  • Redesigned precharge mechanism with optocoupler detection
  • Ensured robust high-voltage and low-voltage isolation
  • Integrated firmware-controlled MOSFETs for external relay operation
  • Supported diverse signal protocols including SPI, I2C, and LT protocol isoSPI
  • Used custom CAN interface for motor controller communication
  • Established communication with three AFE boards managing cell balancing

Multimeter Business Card

ALTIUM DESIGNER

November 2024

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View in Altium 365 View Falstad Simulations

Project Objective:

To design and develop multi-functional personal business card which has the main operating function of a multimeter powered by the STM32F042 series microcontroller.

Description:

  • Designed compact multimeter with five measurement modes
  • Achieved measurement range of up to 4A for current and -40V to +40V for voltage
  • Powered using 3.7V 300mAh LiPo battery with protection mechanisms
  • Integrated USB-C for charging
  • Implemented I2C-controlled OLED display
  • Assembled using reflow oven for SMD components

AC-DC Flyback Converter

ALTIUM DESIGNER

October 2024

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View in Altium 365 View Design Document

Project Objective:

To design and implement an efficient AC-DC flyback converter utilizing the TNY288DG switching IC, providing dual low-voltage outputs while ensuring reliability and safety.

Description:

  • Developed AC-DC flyback converter with 80% power efficiency
  • Input range 90 VAC to 132 VAC, nominal 120 VAC at 60 Hz
  • Dual outputs: 5V at 1A and 9V at 1A
  • Designed custom transformer with tailored windings
  • Integrated RCD clamp circuit for voltage stress management
  • Comprehensive documentation of design process

MSXV Center Console

ALTIUM DESIGNER

October 2024 - November 2024

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Project Objective:

To lead the development and refinement of the center console PCB for the 15th Midnight Sun Solar Race Car, enhancing driver visibility and system performance while fostering team expertise in PCB design and assembly.

Description:

  • Directed the end-to-end design and development of the center console PCB
  • Optimized dashboard digital display placement and design
  • Delivered comprehensive training sessions on Altium Designer
  • Conducted thorough PCB reviews to validate circuit integrity
  • Led the hands-on assembly process with advanced soldering techniques
  • Collaborated with cross-functional teams to troubleshoot challenges

Battery Tester

ALTIUM DESIGNER

September 2024

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Project Objective:

To design and implement a robust voltage monitoring PCB for the Midnight Sun Solar Race Car, ensuring reliable operation within the car's auxiliary voltage range of 10V to 15V.

Description:

  • Engineered voltage monitoring circuit with precision comparators
  • Incorporated hysteresis mechanisms to prevent false triggering
  • Optimized PCB layout for minimal noise and high signal integrity
  • Implemented pull-up resistors for stable comparator operation
  • Utilized Molex connectors for robust in-car connections
  • Designed detailed schematic with industry best practices

Buck Converter

ALTIUM DESIGNER

September 2024

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Project Objective:

To design a high-efficiency buck converter using the AP63301WU-7 synchronous buck converter IC, capable of stepping down a 12V input to a stable 5V output at 3A.

Description:

  • Designed high-efficiency buck converter circuit
  • Utilized AP63301WU-7 synchronous buck converter IC
  • Carefully selected and sized inductor and output capacitors
  • Optimized feedback loop for fast transient response
  • Designed compact PCB layout minimizing loop area
  • Incorporated robust thermal management strategies
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