MP3714

MP3714

3-Cell to 16-Cell, High-Accuracy Battery Monitor and Protector with Coulomb Counting

Description

The MP3714 is a robust battery management device, providing a complete analog front-end (AFE) monitoring and protection solution. The device can support I²C or serial peripheral interface (SPI) communication. It supports connections for 3-cell to 16-cell series battery packs, with an absolute voltage exceeding 80V on particular pins.

The MP3714 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltages (up to 16 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. The dual ADC architecture enables synchronous voltage and current measurements for cell and pack impedance monitoring.

When paired with an MPF4279x fuel gauge, the MP3714 can achieve state-of-charge (SOC) accuracy to within 2%.

The MP3714 includes high-side MOSFET (H-SFET) 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. All of these protections have configurable thresholds.

The MP3714 integrates the fuse driver for severe under-voltage protection (SUVP), severe over-voltage protection (SOVP), MOSFET damage protection, and abundant self-diagnostics protection.

Internal passive balancing MOSFETs can be used to equalize mismatched cells, supporting up to 58mA. There is also an option to drive external balancing transistors (MOSFET or BJT).

The MP3714 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 the 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 the Microcontroller Unit (MCU)
Includes High-Side (HS) N-Channel MOSFET Drivers for Charge and Discharge Control:
- Supports Soft Start (SS) to Eliminate the Pre-Charge Circuit
- Drives Up to 100A DC with Parallel N-Channel MOSFETs
Configurable MOSFET Protections with Recovery Option:
- 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:

Dead Cell 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 per Cell:

Can Drive External Balancing Transistors
Automatic or Manual Control

Additional Features:

Intelligent Open-Wire Detection
Integrated 3.3V and 5V LDO
Reduced Current Standby Mode
Load and Charge Plug-In and Removal Detection
High-Voltage (HV) and Low-Voltage (LV) GPIOs
Configurable for Low-Side MOSFET (LS-FET) Control
Dedicated Thermistor Inputs
Persistent Dead Battery Flag
Lockable Configurable Memory for Protection Configuration

I²C Interface or Serial Peripheral Interface (SPI) with 8-Bit Cyclic Redundancy Check (CRC)

Random Cell Connection Tolerant

Available in a TQFP-48 (7mmx7mm) Package

Active Part Numbers:

MP3714DFP-xxxx-T MP3714DFP-xxxx-Z MP3714DFP-xxxx-P MP3714DFP-0000-T MP3714DFP-0000-Z MP3714DFP-0000-P

Meaning of P & Z

Related Products

MP3716 3-Cell to 18-Cell, High-Accuracy Battery Monitor and Protector with Coulomb Counting

The MP3716 is a robust battery management device, providing a complete analog front-end (AFE) monitoring and protection solution. It supports connections for 3-cell to 18-cell series battery packs, with an absolute voltage exceeding 80V on particular pins.

The MP3716 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltages (up to 18 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 fuel gauge, the MP3716 can achieve state-of-charge (SOC) accuracy to within 2%.

The MP3716 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 MP3716 integrates a fuse driver for 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 MP3716 is available in a TQFP-48 (7mmx7mm) package.

Virtual Bench Pro 4.0

Graphical User Interface (GUI) Supported by MPS Used to Configure and Monitor Multiple MPS Digital Power Solutions with an I²C Interface