HW-613 / MP2315 - Synchronous buck DC-DC converter for 1.8, 2.5, 3.3, 5, 9 or 12 V

 The HW-613 module is a miniature synchronous DC / DC converter based on the MP2315 microcircuit - a high-frequency (conversion frequency of 500 kHz) step-down switching converter with built-in MOSFET switches. The microcircuit provides an output current of up to 3 amperes, with input voltages from 6 to 24 volts. The output voltage is regulated by the interlinear or set at a fixed 1.8, 2.5, 3.3, 5, 9 or 12 V.

The microcircuit has a full set of protection functions OCP (English abbreviation OCP - Over Current Protection) and temperature. When the temperature rises above 150 ° C, thermal protection is triggered, which turns off at 130 ° C.

The HW-613 module based on the MP2315 is well suited for replacing the common L78xx stabilizers in the TO220 package, can be used in flat-panel TVs and monitors, laptops, charging various gadgets and in power supply circuits for other electronics.

HW-613 / MP2315 Module Specifications

  • Conversion efficiency (COP) : up to 96%;
  • Switching frequency : 500 kHz;
  • Input voltage : 4.5 to 24 V;
  • Output voltage (adjustable) : from 0.8;
  • Output voltage (fixed) : 1.8V, 2.5V, 3.3V, 5V , 9V and 12V;
  • Output constant current : up to 3 A;
  • Protection : short circuit (OCP), overheating;
  • Working temperature : -40 ° C to +125 ° C;
  • Reverse polarity protection : no;
  • Overvoltage protection : no.
  • Power saving mode : yes;
  • Body markings : AGC, AGCH, AGCD, IAGC, IAGCD, 1AGC, etc.
  • Case : 8-pin TSOT23.

Functional block diagram of MP2315

Functional block diagram of MP2315

Connection diagram MP2315

The MP2315 requires a minimum of readily available standard external components and is available in a compact 8-pin TSOT23 package.
Connection diagram MP2315 (schematic diagram)The EN pin is used to turn the module on and off by supplying logic "1" and "0", respectively. The module has a pull-up resistor to the power output through a 200K resistor.

Output voltage adjustment

The output voltage can be adjusted with a pull-down resistor (see below)

Adjusting the output voltage MP2315 (HW-613) - Variable resistor

or set to fixed 1.8V, 2.5V, 3.3V, 5V, 9V or 12V. To use fixed voltages, cut the ADJ track (see below) and solder the jumper against the desired voltage.
Output Voltage Adjustment (MP2315) - Jumper

If you install 5V, you can charge smartphones, tablets, mp3 players, navigators and other portable, pocket devices. Even Iphone and Ipad can be charged from this module, since it provides the required output current.

Connecting the HW-613 module

The module has four main contacts, the supply voltage from 6 to 24V DC is supplied to the IN + connector ("+" from the power supply), the load is connected to VO + ("+") and GND is the common contact. EN - enable / disable the module (1/0).
MP2315 (HW-613) - Adjusting the output voltage

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