MP3716

MP3716

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

Description

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.

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:
- 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 to Eliminate Pre-Charge Circuit
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
- 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 per Cell:
- Can Drive External Balancing Transistors
- Automatic or Manual Control
Additional Features:
- Intelligent Open Wire Detection
- Integrated 3.3V and 5V Low-Dropout (LDO) Regulator
- Configurable for Low-Side MOSFET (LS-FET) Control
- Persistent Dead Battery Flag
- Lockable, Configurable Memory for Protection Configuration
- I²C 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:

MP3716DFP-xxxx-T MP3716DFP-xxxx-Z MP3716DFP-0000-T MP3716DFP-0002-T MP3716DFP-0000-Z MP3716DFP-0002-Z MP3716DFP-xxxx-P MP3716DFP-0000-P MP3716DFP-0002-P

Meaning of P & Z