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Single Li-ion cell supervisor (Linx) DNB1101B

Overview

The DNB1101 is a single Li-ion cell supervisor (Linx) IC that provides electrochemical impedance spectroscopy (EIS) for each individual cell or a group of cells in parallel. The integrated die temperature sensors can be used for cell temperature measurement. Additional thermo-couples/NTCs are no longer required. The DNB1101 measures the cell impedance based on a patented circuit technology, enabling a new approach of indicating the internal cell temperature. It also enables on-line state-of-health estimation, in combination with algorithms running on the pack controller. The IC integrates separate (redundant) ADCs for both voltage and temperature measurement. With a differential daisy chain, the cell measurement information is transmitted to the pack controller. The first IC in the chain translates a standard SPI signal to the daisy chain differential signal.

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Advantages

Key Features


  • Voltage measurement accuracy: ±2 mV

  • Battery cell voltage range: 1.9 - 5.5 V

  • Die temperature sensor accuracy: ±2.5 K

  • Passive balancing with diagnostics

  • Low-ohmic cells EIS (impedance spectroscopy)

  • Daisy chain communication speed: 1 Mbps

  • Temperature range: -40⁰C to 105⁰C


Applications


  • On-grid energy storage systems

  • Renewable energy storage systems

  • Telecom base station backup power supplies

  • Data center backup power supplies


Parameters
Voltage measurement accuracy +/- 2mVCell measurement voltage range 1.9V to 5.5V
The precision of temperature sensor inside the chip is +/- 2.5KDaisy chain communication rate 1Mbps
Operating temperature range -40 degrees to 105 degreesImpedance monitoring frequency range 7.5mHz to 7.8kHz
The maximum balance current is 200mA


Design resources
Design tools

Hardware
  · 4LINX_FR4_V2.0B
  · 1LINX_FPC_V2.0B
  · PC_V3.1B
Software
  · GUI
  · Firmware reference code

Download design tools

Videos

Live: New energy lithium cell battery management scheme with impedance detection function

This seminar will introduce Datang NXP Semiconductors's single cell based battery management solution:
- This solution can bring customers more accurate temperature and voltage sampling;
- Additional impedance detection function provided to customers to escort the safety of new energy vehicle power battery;
- The battery management chip DNB1168 in this solution, its core components are 100% domestic, the chip is integrated with the ac impedance monitoring of the cell, the chip is integrated with the temperature sensor, and the circuit of the highest safety level ASIL-D.

Live: DNB1168 -- Single cell battery management System chip solution

Function overview of single cell monitoring chip DNB1168

Sample & Buy

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For chip purchase,please contact distributors : ×

EDOM Technology Co Ltd

Singapore Branch Block 4102 , Ang Mo Kio Avenue 10.#07-08 Techplace !, Singapore

(65)63465198-102

Powertek Group Co.,Ltd

2101-02,Office Tower 2,Century Link,
No.1196 Century Avenue,Pudong New Area,Shanghai,China

13916656520

Unique Semiconductor Group Co.,Ltd

Rm1008, No.1717, North Sichuan Road, Shanghai

(86)21-51876636-296

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