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reference designMP2681 | Demoboard EV2681-S-00A

Monolithic Power Systems MP2681 | Demoboard EV2681-S-00A

CC/CV Controller with Full Protection and Indication

Overview

TopologyFlyback Converter
Input voltage85-220 V
Output 121 V / 3 A
IC revision1.1

Description

The EV2681-S-00A is an evaluation board for MP2681 which is a voltage and current control IC integrated a precision voltage reference and charge status indications. It is suitable for AC adapter input in the plug-in, cradle charger applications. The device automatically detects the battery cell through the battery ID resistor and regulates the battery voltage according to the cell information: 3S1P, 3S2P, 4S1P, 4S2P, 5S1P and 5S2P. Then the AC adapter output is automatically set according to the battery specification. Additionally, for the battery spec which is inside the six kinds but without the ID resistor, user can artificially connect a resistor from ID pin to GND to make a right ID voltage input for cell detection and MP2681 could set the output voltage accordingly. The DC voltage and the current level at the output of the forward-switching power supply are compared to the voltage reference and current limitation, respectively. MP2681 feeds the control signal back to the controller IC at the primary side through an opto-coupler. Furthermore, MP2681 provides fixed pre-charge mode for the deep-discharged battery. The safety feature includes battery temperature monitoring-NTC control, charge time-out and fault control, it also provides charge status indication

Features

Constant Voltage and Constant CurrentControl

  • Pre-Charge Mode for Deep-dischargedBattery
  • Automatic Battery Cell Detection
  • Two 1MHz Bandwidth Operational AmplifierOutput Connected with OR Logic
  • Wide Input Voltage Range: 4.5V to 30V
  • Auto-Recharge
  • Charge On/Off Control
  • Programmable Internal Timer
  • Battery Temperature Monitoring
  • Charge Status Indication
  • Power Line Fault Detection
  • Over Temperature Protection

Typical applications

  • Battery Charger for Portable Tools,Standalone Fast Charger

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
ISAT,10%(A)
fres(MHz)
Version
IR(A)
L(µH)
RDC max.(Ω)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
SamplesAvailability & Sample
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7447462033
SPECWE-TI Radial Leaded Wire Wound Inductor, 4.6 A, 48 MHz
Simu­lation
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Downloads9 files

EDA models: Components ZIP

CAD files ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TI Radial Leaded Wire Wound Inductor
Saturation Current @ 10%4.6 A
Self Resonant Frequency48 MHz
VersionHeat Shrinking Tube 
Rated Current4.7 A
Inductance3.3 µH
DC Resistance0.025 Ω
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Length6 mm
Width6 mm
Height8.5 mm
MountTHT 
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744825433
SPECWE-CMB Common Mode Power Line Choke, –, –
Simu­lation
Availability
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Downloads11 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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VersionTHT 
Rated Current3 A
Inductance33000 µH
DC Resistance0.21 Ω
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length30 mm
Width21 mm
Height35 mm
MountTHT 
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