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

  • Rajkumar Sharma
  • 191 Views
  • easy
  • Tested
  • SKU: EL134940
  • Quote Now

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

NO.QNTY.REFDESC.MANUFACTURERSUPPLIERSUPPLIER PART NO
12CN1,CN24 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
22C1,C4470uF/16V ELECTROLYTICUNITED CHEMDIGIKEY565-4278-1-ND
31C210uF/25V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
41C310nF/50V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
51C510uF/16V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
61C61uF/25V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
71C747PF/50V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
81C82.2nF/50V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
91D1SS34TAIWAN SEMIDIGIKEY1801-SS34TR-ND
101D2LED RED SMD SIZE 0805OSRAMDIGIKEY475-1278-1-ND
111L16.8uH 10.4 X 10.4MMEPCOS-TDKDIGIKEY495-1808-1-ND
121R185K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
131R210K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
141R31K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
151R451K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
161U1PAM2423 SOIC8DIODE INCORPDIGIKEYPAM2423AECADJRDICT-ND

Connections

Gerber View

Photos

Video

PAM2423 Datasheet

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