Step Up DC-DC Converter 12V Output – 5V Input

This high-performance, fixed frequency, current-mode PWM step-up DC/DC converter efficiently produces 12V from input voltages between 3.6V to 5.5V. The project is built using the PAM2423 chip, which includes an integrated power MOSFET that supports a peak current of up to 5.5A.  The IC utilizes simple external loop compensation allowing optimization between component size, cost, and AC performance across a wide range of applications. Additional functions include an externally programmable soft-start function for easy inrush current control, internal over-voltage protection (OVP), cycle-by-cycle current limit protection, under-voltage lock-out, and thermal shutdown.

Features

• Input Supply 5V DC (Range 3.6V to 5.5V)
• Output 12V DC
• Load Current Up to 500mA
• Output Power LED
• PCB Dimensions 35.08 X 31.12MM
• Efficiency Up to 90%
• Operating Frequency 520Khz
• Soft-Start Function
• Built-in Over-Voltage Protection (OVP)
• Under-Voltage-Lockout
• Under Voltage Lockout Threshold 2.5V, Hysteresis 200mV
• Over-Current Protection – Threshold 5.5A
• Thermal Shutdowns – Threshold 150 Degree Cent.
• 4 X 2.5MM Mounting Holes
• PCB Dimensions 35.08 x 31.12mm

Connections and Other Details

• CN1: Pin 1 & 2 = V-Output 12V DC, Pin 3 & 4 = GND
• CN2: Pin 1 & 2 = V-Input 5V DC, Pin 3 & 4 = GND
• D2: Output LED

Schematic

Parts List

Connections

Gerber View

Photos

Video

PAM2423 Datasheet

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