Ebyte AP21-24W12N User manual

AP21-24W12N User Manual
24W Chassis AC-DC Step-down Switching Power Supply

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
1
1
Contents
Disclaimer.......................................................................................................................................................................... 1
Chapter 1 Overview........................................................................................................................................................... 1
1.2. Features....................................................................................................................................................................... 1
1.3. Application scenarios.................................................................................................................................................. 1
Chapter 2 Specifications.................................................................................................................................................... 2
2.1. Limit Parameters......................................................................................................................................................... 2
2.2. Operating Parameters.................................................................................................................................................. 2
2.3. Efficiency & Load.......................................................................................................................................................3
2.4. Boot time.....................................................................................................................................................................3
2.5. Full load working ripple..............................................................................................................................................3
2.6. Operating frequency....................................................................................................................................................4
Chapter 3 Basic operation.................................................................................................................................................. 4
3.1. Precautions.................................................................................................................................................................. 4
Chapter 4 Mechanical Characteristics and Pin Definition................................................................................................. 5
4.1. Size..............................................................................................................................................................................5
4.2. Pin definition...............................................................................................................................................................5
Chapter 5 Product Selection...............................................................................................................................................6
Revision history................................................................................................................................................................. 6
About us............................................................................................................................................................................. 6

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
1
1
Disclaimer
EBYTE reserves all rights to this document and the information contained herein. Products,
names, logos and designs described herein may in whole or in part be subject to intellectual
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document or any part thereof without the express permission of EBYTE is strictly
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The information contained herein is provided “as is” and EBYTE assumes no liability for the
use of the information. No warranty, either express or implied, is given, including but not
limited, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by EBYTE at any time. For most
recent documents, visit www.ebyte.com.

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
1
1
Chapter 1 Overview
1.1. Introduction
AP21-24W12N is a small size chassis type switching power supply, AC and DC
dual purpose, input voltage 85~264Vac/100~370Vdc, ultra-low ripple, ultra-low
power consumption, high efficiency, safe isolation, high reliability, etc. ;
Complies with IEC60950, EN60950, UL60950 certification standards,
peripherals do not need to add EMI-related components, greatly reducing user
design thresholds; users do not need to consider stability, even in extremely
complex voltage environments, they can stabilize output.
1.2. Features
Input voltage: international universal full-voltage AC input 85 ~ 264Vac/100~370Vdc;
Static power consumption: <0.1W;
Ultra-low ripple: 120mV ripple at full load;
Ultra-small size: 85x58x33mm;
Certification standards: Comply with IEC60950, EN60950, UL60950 certification standards,
Peripherals do not need to add EMC-related components;
Protection measures: over voltage protection, over current protection, short circuit protection, over temperature
protection;
High-quality solutions: greatly improve work efficiency;
High-quality components: 105℃high-quality brand electrolytic capacitors;
Working temperature: can work up to 70℃ambient temperature.
1.3. Application scenarios
Industrial equipment
Instrumentation
Solenoid valve, relay;
Large billboard
Charging pile;
Security equipment
Smart home
Traffic signal lights, smart street lights;
RF communication base station equipment.

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
2
2
Chapter 2 Specifications
2.1. Limit Parameters
Num
Limit Parameters
Min
Max
Remark
1
Input voltage (Vac)
85
264
Vac
2
Input voltage (Vdc)
100
370
Vdc
3
Output power (W)
0
25
W
4
Working temperature (℃)
-40
+85
ta=40℃,tc=85℃
2.2. Operating Parameters
Num
Main Parameter
Min
Type
Max
Remark
Input
Input voltage-AC
100
220
250
Vac
Input voltage-DC
120
-
350V
Vdc
working frequency
-
50/60
-
Hz
Inrush current
-
-
10
10 A at 230 Vac
Static power
-
-
<0.1
W
Highest efficiency
80.5
-
86.4
%
Output
Output voltage
11.5
12
12.5
V
Continuous current
0
-
2
A
Output Power
0
-
24
W
Ripple noise
50
-
120
mV
Voltage adjustment range
-
±0.5
-
V
Output voltage accuracy
-
-
±1.5
%
Boot time
400
550
1100
ms
Linear adjustment rate
-
0.5
-
%
Load Regulation
-
0.5
-
%
Protection
Overcurrent protection
110
-
150
%
Short circuit protection
-
-
-
Automatic recovery after the fault state is
eliminated
Condition
Operating temperature
-40
25
85
ta=40℃,tc=85℃
Working humidity
20
-
90
No condensation
storage temperature
-40
+25
+85
Dry and store at room temperature
Storage humidity
10
-
90
Dry and store at room temperature
Safety
Insulation withstand voltage
-
-
3000
VAC I/P - O/P
Insulation resistance
-
-
500
I/P - O/P: 100M ohms /500VDC at 25 ℃
safety regulations
IEC60950、EN60950、UL60950
Other
Size
85x58x33mm
Weight
-
116
-
g

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
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2.3. Efficiency & Load
2.4. Boot time
INPUT:AC 120V OUTPUT:12V 2A INPUT:AC 230V OUTPUT: 12V 2A
2.5. Full load working ripple
INPUT:AC 120V OUTPUT: 12V 2A INPUT:AC 230V OUTPUT: 12V 2A

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
4
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2.6. Operating frequency
INPUT:AC 120V OUTPUT: 12V 2A INPUT:AC 230V OUTPUT: 12V 2A
2.7. Characteristic curve-derating design
Note: ①For input voltage of 85-100VAC/120-140VDC, input voltage derating shall be performed on the basis of temperature derating;
②This product is suitable for use in a natural air cooling environment, if used in a closed environment, please consult our FAE.
Chapter 3 Basic operation
3.1. Precautions
Operation of this module requires certain professional skills, rigorous non-professional life to operate it!
Be sure to carefully study the knowledge of safe use before use.
Strict human body contact with L and N power lines after power-on to prevent accidents caused by electric shock, it is
recommended to increase isolation at the input front end.
The maximum input voltage must not exceed 250Vac, otherwise it may cause permanent damage to the module.
During routine maintenance, the input power should be disconnected first to prevent accidents caused by electric

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
5
5
shock.
Chapter 4 Mechanical Characteristics and Pin Definition
4.1. Size
4.2. Pin definition
NUM
Pin
Direction
Application
1
L
Input
AC power input
2
N
Input
AC power input
3
/
Ground
4
V-
Output
DC output, power ground
5
V+
Output
DC output, power supply positive

Chengdu Ebyte Electronic Technology Co., Ltd. AP21-24W12N User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd
6
6
Chapter 5 Product Selection
Model
Input voltage
Output voltage
Output current
effectiveness
Installation
AP21-24W05N
100~250Vac
5Vdc
4.8A
85.3%
Plastic plug-in
AP21-24W12N
12V
2A
86.4%
Plastic plug-in
AP21-24W24N
24V
1A
89.1%
Plastic plug-in
Revision history
Num
Version
Date
Description
Issued by
1
V1.0
20191203
Initial version
LJ
About us
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