ICStation ZK-DP2 - User Manual

DC-DC 15W Adjustable USB Step Up Down Power Supply Module
https://www.icstation.com/ ; orders@icstation-team.com
1.Description:
ZK-DP2 is a DC adjustable constant voltage constant current step up/down
power supply module with LED digital tube display. It can be used as ordinary buck
power supply module, charger and LED constant current driver.

Summary

Module Description

ZK-DP2 Module Overview

DC adjustable constant voltage and constant current step up/down power supply module with LED display.

Product Features

Comprehensive Feature List

Details on short circuit, anti-backflow, CV/CC adjust, display, input modes, protection, and charging.

Technical Specifications

Detailed Product Parameters

Covers product name, input/output voltages, current, power, display precision, efficiency, and operating conditions.

Controls and Indicators

Button Operation and Functionality

Explains long press, short press functions of left and right buttons for mode selection and value adjustment.

Adjustment Potentiometers

Guides on using CV potentiometer for voltage and CC potentiometer for current adjustment.

Status Indicator LEDs

Details the ON LED (green) for output and CC LED (red) for constant current mode.

Input and Output Terminals

Describes available input methods (USB, pads) and the output terminal type and range.

Calibration Procedures

Output Voltage Calibration

Step-by-step guide to calibrate output voltage using button and screen feedback.

Output Current Calibration

Procedure for calibrating the output current using buttons and observing screen display.

Protective Functions

Module Protection Mechanisms

Details on over-voltage, over-current, over-power, and over-temperature protection.

Using the Module

Ordinary Power Supply Operation

Steps for using as a standard step-down power module, including voltage and current adjustments.

Battery Charger Configuration

Instructions for using the module as a charger, including setting voltage and current for batteries.

High Power LED Driver Setup

Guide on configuring the module to drive high-power LEDs with specific current requirements.

Important Notes

Operational Guidelines and Warnings

Key notes on DC-only operation, output shorting, IN-/OUT- connection, input power, and module heat.

Application Areas

Common Applications

Lists various uses including power supply, battery charger, LED driver, and test meter.

Overview

1. Function Description
2. Important Technical Specifications
3. Protection Features
4. Usage Features
5. Button/Potentiometer/LED Introduction
6. Using the Module
7. As an ordinary step-down power module
8. As a charger
9. As a high-power LED constant current driver
10. Maintenance Features
11. Important Notes
12. Applications

The ZK-DP2 is a versatile DC-DC 15W adjustable USB step-up/down power supply module, designed for a wide range of applications including use as an ordinary buck power supply, a charger, and an LED constant current driver. It features an LED digital tube display for clear readouts and offers both constant voltage (CV) and constant current (CC) adjustment capabilities.

Function Description:

The module supports three input power modes:

• Standard Type A USB Male: For DC 5V input.
• Micro USB Female: For DC 5V input.
• IN+ and IN- pads: For DC 4.0V-13.0V input.

It provides an output voltage range of DC 0.5V-30.0V and an output current of up to 2A, with a maximum output power of 15W. The module is equipped with a 4-bit digital tube display that can show multiple parameters in turn, including output voltage, current, and power.

Important Technical Specifications:

• Product Name: ZK-DP2 USB 2A Step Up/Down Power Supply Module with shell
• Product Number: ZK-DP2
• Input Voltage (Pads): DC 4.0V-13.0V
• Input Voltage (USB): DC 5.0V
• Output Voltage: DC 0.5V-30.0V
• Output Current: 2A
• Output Power: 15W (Max)
• Voltage Display Precision: +/-0.1V
• Voltage Display Resolution: 0.1V
• Current Display Range: 0~2.2A
• Current Display Precision: +/-0.05A
• Voltage Display Resolution: 0.001A
• Power Display Range: 0~99.99Ah
• Capacity Precision: 0.00W~15.0W
• Protection Temperature Threshold: 100℃
• Conversion Efficiency: 95%
• Working Current: 30mA
• Working Temperature Range: -20℃~85℃
• Working Humidity Range: 0%-95%RH
• Size: 843524mm

Protection Features:

The ZK-DP2 incorporates several protective functions to ensure safe operation:

• Short Circuit Protection: Yes
• Anti-backflow Protection: Yes
• Over-Current Protection: Module turns OFF output automatically if output current exceeds 2A.
• Over-Voltage Protection: Module turns OFF output automatically if output voltage exceeds 30.5V.
• Over-Power Protection: Module turns OFF output automatically if output power exceeds 15W, displaying '-OP-'. User needs to reduce load power and press 'ON/OFF' button.
• Over Temperature Protection: Module turns OFF output automatically if temperature exceeds 100°C, displaying '-OT-'. User needs to reduce load power and press 'ON/OFF' button.

Usage Features:

The module offers high resolution and allows multiple parameters to be displayed in turn. It comes with a comfortable outer casing.

Button/Potentiometer/LED Introduction:

• Left Button:
  • Long press (more than 3 seconds): Sets default ON or OFF for next re-power in display mode, or acts as 'Minus -' in calibration mode.
  • Short press: Selects whether to display output voltage in display mode.
• Right Button:
  • Long press (more than 3 seconds): Enters or exits calibration setup mode in display mode, or acts as 'Plus +' in calibration mode.
  • Short press: Switches display between output voltage, output current, output power, or cycles through these parameters.
• CV Potentiometer: Adjusts output voltage. Rotate clockwise to increase voltage. If output voltage cannot be adjusted, rotate counterclockwise 10 turns.
• CC Potentiometer: Adjusts output current. Rotate clockwise to increase current. Note: This does not maintain a fixed output current; it fixes the output current value when the load current reaches the set current.
• ON LED (Green): Output indicator. Turns ON when there is an output at the terminal, otherwise OFF.
• CC LED (Red): Constant current output indicator. Turns ON when the load current reaches the set current, indicating constant current state.

Using the Module:

As an ordinary step-down power module:

*   Connect input voltage.
*   Adjust CV potentiometer to set desired output voltage. If adjustment is difficult, rotate CV potentiometer counterclockwise more than 10 turns.
*   Rotate CC potentiometer counterclockwise more than 10 turns initially.
*   Test output short circuit current with a multimeter (10A or 20A range) by connecting probes to the output terminal.
*   Rotate CC potentiometer clockwise to set the desired over-current protection value.
*   Test and verify the maximum output current (e.g., if set to 1A, the red LED will turn on when output reaches 1A).
*   Note that output voltage will decrease due to the current sampling resistor at higher currents. Output current changes with load but will not exceed the set value.

As a charger:

*   Ensure the battery's floating charge voltage and charge current are known (e.g., for a 3.7V/2200mAh lithium battery, floating charge voltage is 4.2V, max charging current is 2200mA).
*   Connect input voltage (do not connect load during setup).
*   Test output voltage with a multimeter and adjust CV potentiometer to the required floating charge voltage (e.g., 4.2V for a 3.7V lithium battery).
*   Rotate CC potentiometer counterclockwise more than 10 turns initially.
*   Test output short circuit current with a multimeter (10A or 20A range).
*   Rotate CC constant current potentiometer clockwise to set the desired charge current value.
*   Connect the battery to the output terminal and begin charging.

As a high-power LED constant current driver:

*   Determine the LED's working current and maximum working voltage.
*   Connect input voltage (do not connect load during setup).
*   Test output voltage with a multimeter and adjust CV potentiometer to set the output voltage to the LED's maximum working voltage.
*   Rotate CC potentiometer counterclockwise more than 10 turns.
*   Test output short circuit current with a multimeter (10A or 20A range).
*   Rotate CC constant current potentiometer clockwise to set the output current to the required LED working current.
*   Connect the LED and test.

Maintenance Features:

• Calibration: The ZK-DP2 allows calibration of both output voltage and output current.
  • Calibrate output voltage: Long press the right button when displaying output voltage to enter calibration mode (screen will flash). Short press the left button to decrease the value, short press the right button to increase. Long press the right button again to save and exit.
  • Calibrate output current: Long press the right button when displaying output current to enter calibration mode (screen will flash). Short press the left button to decrease the value, short press the right button to increase. Long press the right button again to save and exit.

Important Notes:

• This is a DC power module; it cannot be connected to AC power.
• Do not short the output.
• 'IN-' and 'OUT-' cannot be connected together; otherwise, the module will not support constant current output.
• Ensure input power is higher than load power.
• If the module becomes hot, reduce the output power.
• If the output voltage cannot be adjusted, rotate the CV potentiometer counterclockwise more than 10 turns.
• Output current cannot maintain a fixed value; it changes with load but will not exceed the set output current value.
• A protective film is on the surface of the shell; it is recommended to remove it for a clearer display.
• Read the user manual and description before use.

Applications:

• Ordinary power supply
• Battery charger
• LED drive power
• Instrument voltage display
• Test meter
• Circuit test
• Power conversion

ICStation ZK-DP2 Specifications