This project features an ultra-compact, high-efficiency boost converter module designed using the TPS61023 switching regulator IC. The board is optimized for small size, high reliability, and easy manufacturing, making it ideal for modern portable and battery-powered electronics. The converter efficiently steps up low input voltages to a stable higher output, making it a perfect solution for Li-ion batteries, single-cell power sources, and low-voltage embedded systems.

Key Features

Boost Converter IC: TPS61023 (2A internal switch)

Wide Input Voltage Range: 0.5V – 5.5V

High Efficiency: Up to 95%

Compact PCB Size: Suitable for space-constrained designs

Stable Output Voltage: Configurable via feedback resistors

Output Voltage Setting

TPS61023 uses R1 & R2 to set output voltage.

Formula (from datasheet):

VOUT = 0.5 × (1 + R1 / R2)

Where:

R1 = Top resistor (VOUT → FB)

R2 = Bottom resistor (FB → GND)

🔹 Example configurations

✅ 5V Output (Recommend)

R1 = 900K

R2 = 100K

VOUT = 0.5 × (1 + 900k / 100k) 
VOUT = 0.5 × (1 + 9) 
VOUT = 0.5 × 10 
VOUT = 5.0 V

✅ 3.3V Output (Best Efficiency)

R1 = 560kΩ

R2 = 100kΩ

VOUT = 0.5 × (1 + 560k / 100k) 
VOUT = 0.5 × (1 + 5.6) 
VOUT = 0.5 × 6.6 
VOUT = 3.3 V

✅ 9V Output (Light Medium Load)

R1 = 1.7MΩ

R2 = 100kΩ

VOUT = 0.5 × (1 + 1700k / 100k) 
VOUT = 0.5 × (1 + 17) 
VOUT = 0.5 × 18 
VOUT = 9.0 V

✅ 12V Output (Very Light Load Only)

R1 = 2.3MΩ

R2 = 100kΩ

VOUT = 0.5 × (1 + 2300k / 100k) 
VOUT = 0.5 × (1 + 23) 
VOUT = 0.5 × 24 
VOUT = 12.0 V

Power & current capability

Typical output power limits:

VIN: 3.7V || 3.0V || 1.8V

VOUT: 5V || 5V || 3.3V

Max Load: ~1A || ~700 mA || ~600 mA

This allows the module to be easily configured for 5V, 3.3V, or other custom voltages, making it flexible for different applications.

Conclusion

This TPS61023 boost converter module combines compact size, high efficiency, and reliable performance into a simple yet powerful design. It’s an excellent building block for makers, engineers, and product designers looking for a dependable step-up power solution.