Portable battery charger electronic PCBA design

Short Description:

Ensure that the charging circuit is compatible with the type and capacity of the battery being used. Power Management: Integrate a power management IC to convert the input power supply (e.g., AC mains or USB power) to the required voltage for the charging circuit and the OLED screen.
The electronic PCBA design power management IC should also provide necessary protection features like overvoltage protection, overcurrent protection, and thermal protection. Microcontroller Unit (MCU): Select a microcontroller unit that can control the charging process and interface with the OLED screen.
Working with an experienced electrical engineer or PCB designer can help ensure the successful implementation of the PCBA solution for your battery charger with an OLED screen.

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Battery Charger With Oled Electrical Specification

1.1 INPUT REQUIREMENT
RATED INPUT VOLTAGE		■100-240V~ ■120V~ ■230V~ ■Others：
INPUT VOLTAGE RANGE		■90-264V~ ■Others：
RATED INPUT FREQUENCY		■50/60Hz ■60Hz ■50Hz ■Others：
INPUT FREQUENCY RANGE		■47-63Hz ■Others：
INPUT CURRENT		0.12A Max @Input 100-240V~
INPUT POWER		15W
PF		>0.96
INRUSH CURRENT		N/A

1.2 OUTPUT FEATURES
RATED OUTPUT	SPEC.MIN	SPEC MAX	Remark
Output Voltage	4.95VDC	5.05VDC
Output Current	2000mA	2200mA
Ripple and Noise	20mVp-p	40mVp-p
Turn-on delay time	<1S	<1S
Battery Charge@ <2.9V	Pulse	Pulse
Battery Charge@ 3.0V-4.0Vv	CC 319MA	CC 320MA
Battery Charge@ 4.0V	CV 4.2V	CV 4.2V
Battery Capacity Display	1%	100%	0.96INCH OLED SILKSCREEN

1.3 PROTECTION FEATURE
PROTECTION FEATURE	FUNCTION DESCRIPTION
Overcurrent	If the load is in overcurrent mode ,the output must be protection (hiccupped & power reduced)
Short output	If the load is in shorted mode, the output must withstand a continuous shorted status without damage.

1.4 SAFETY
ITEMS	STANDARD SPEC	Remark
Dielectric Strength (Hi-Pot)	3100VAC /5Ma/3S
Insulation Resistance	10 MΩ min	Between input and output @500 VDC.
Leakage Current	<0.25mA	For Class II when the power supply is operated maximum input voltage and maximum frequency.
EMI Standards	GB4343/GB17625
Electrostatic Discharge (ESD)	±8KV air discharge±4KV contact discharge	IEC61000-4-2
Lightning Surge	Power Line to Line: 1KV.	IEC61000-4-5
Electrical Fast Transient / Burst (EFT)	Power Line to Line: 1KV.	IEC61000-4-4