MP3712

3-Cell to 8-Cell, High-Accuracy Battery Monitor and Protector with Coulomb Counting

Parameters Description

Number of Series Cells (min)
3
Number of Series Cells (max)
8
Absolute Max Voltage (V)
100
Min Operating Pack Voltage (V)
8
Hide Side or Low Driver
High Side
Coulomb Counting
Yes
Self-Diagnosis
Yes
Cell Voltage Accuracy at -20C to +65C
±4mV
Cell Voltage Accuracy at Room Temp
±3mV
Communication interface
I2C/SPI
Protection
Cell Dead and SOVP, Cell Low/High-Temperature Protection, Cell Under/Over-Voltage Protection, Charge/Discharge Over-Current Protection, Charge/Discharge Short-Circuit Protection, Die High-Temperature Protection, MOSFET Damage Protection, Pack SUVP and SOVP, Pack Under/Over-Voltage Protection, Self-Diagnostics Protection
Package (mm)
TQFP-48 (7x7)

The MP3712 is a robust battery management device, providing a complete analog front-end (AFE) monitoring and protection solution. It supports connections for 3-cell to 8-cell series battery packs, with an absolute voltage exceeding 80V on particular pins.

The MP3712 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltage (up to 8 channels), die temperature, and 7-channel temperatures via external NTC thermistors. The second ADC measures the charge/discharge current via an external current-sense resistor.

When paired with an MPF4279x/MPF42781 fuel gauge, the MP3712 can achieve state-of-charge (SOC) accuracy to within 2%.

The MP3712 includes high-side MOSFET (HS-FET) drivers for charge and discharge independent control. The discharge (DSG) MOSFET driver includes a configurable-scaled current soft start (SS) that provides a controlled turn-on, eliminating the need for an external pre-charge circuit. The MOSFET drivers also incorporate over-current protection (OCP), short-circuit protection (SCP), battery under-voltage protection (UVP), battery over-voltage protection (OVP), and high-/low-temperature
protection.

The MP3712 integrates the fuse driver for the severe under-voltage protection (SUVP), severe over-voltage protection (SOVP), MOSFET damage protection, and abundant self diagnostics protection.

For applications requiring compliance with IPC 2221B or UL 60950-1, conformal coating may be required depending on the battery pack voltage.

The MP3712 is available in a TQFP-48 (7mmx7mm) package.

Features & Benefits

Incorporates Dual Analog-to-Digital Converter (ADC) Architecture:
- <±2% State-of-Charge (SOC) Error with MPF4279x Fuel Gauge
- Cell Voltage Measurement Error <5mV
- Current/Coulomb Counter Error <±0.3%
- Strictly Synchronized Current/Voltage Measurement for Impedance Sensing
Standalone Mode:
- Analog Front-End (AFE) Can Work in Standalone Mode without Microcontroller Unit (MCU)
Includes High-Side N-Channel MOSFET Drivers for Charge and Discharge Control:
- Supports Soft Start (SS) to Eliminate Pre-Charge Circuit
Configurable MOSFET Protections with Recovery Options:
- Charge/Discharge Over-Current Protection (OCP) and Short-Circuit Protection (SCP)
- Cell Under-Voltage Protection (UVP) and Over-Voltage Protection (OVP)
- Pack UVP and OVP
- Cell Low-/High-Temperature Protection
- Die High-Temperature Protection
Configurable Fuse Protections:
- Cell Dead and Severe Over-Voltage Protection (SOVP)
- Pack Severe Under-Voltage Protection (SUVP) and SOVP
- MOSFET Damage Protection
- Self-Diagnostics Protection
Passive Cell-Balancing Up to 58mA/Cell:
- Can Drive External Balancing Transistors
- Automatic or Manual Control
Additional Features:
- Intelligent Open-Wire Detection
- Integrated 3.3V and 5V Low-Dropout (LDO) Regulators
- Configurable for Low-Side MOSFET (LS-FET) Control
- Persistent Dead Battery Flag
- Lockable Programmable Memory for Protection Configurations
- I²C or SPI Interface with 8-Bit Cyclic Redundancy Check (CRC)
- Random Cell Connection Tolerant
- Available in a TQFP-48 (7mmx7mm) Package

Active Part Numbers:

MP3712DFP-0000-T MP3712DFP-0002-T

Meaning of P & Z

Related Products

EV3712-000x-FP-00A 3-Cell to 8-Cell, High-Accuracy, I²C/SPI Monitor and Protector with Coulomb Counting Evaluation Board

The EV3712-0000/0002-FP-00A evaluation boards are designed to demonstrate the capabilities of the MP3712, a complete analog front-end (AFE) monitoring and protection IC. The MP3712 supports 3-cell to 8-cell series battery packs with outstanding voltage and current measurement accuracy, as well as a complete set of protection features.

The MP3712 measures each cell’s voltage and synchronously measures the charge/discharge current and Coulomb counting via an external current-sense resistor. The MP3712 includes high-side MOSFET (HS-FET) drivers for charge and discharge control. It measures the die temperature and cell temperature via 7 NTC thermistor inputs. The MP3712 contains internal passive balancing MOSFETs capable of driving up to 58mA, and is also capable of driving external balancing transistors for a higher current.

The discharge (DSG) MOSFET driver includes a configurable soft start (SS) that provides a controlled turn-on, eliminating the need for an external pre-charge circuit. The MOSFET drivers also incorporate over-current protection (OCP), short-circuit protection (SCP), battery under-voltage protection (UVP), battery over-voltage protection (OVP), and high-/low-temperature protection. All of these protections have configurable thresholds.

This evaluation board combines the MP3712 with power MOSFETs and a current-sense resistor to support up to 70A of charge/discharge current. If needed, the board also includes placeholders to add external MOSFETs for a higher balancing current.

The EV3712-0000/0002-FP-00A are fully assembled and tested evaluation boards. The MP3712 is available in a TQFP-48 (7mmx7mm) package.

$180.00
+ tax

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