NXP Semiconductors FRDM33772BTPLEVB User Manual

FRDM33772BTPLEVB

Featuring the MC33772B battery cell controller IC

Rev. 1.0 — 22 June 2018 User guide

1 FRDM33772BTPLEVB

NXP Semiconductors

FRDM33772BTPLEVB

Featuring the MC33772B battery cell controller IC

User guide Rev. 1.0 — 22 June 2018

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2 Important notice

NXP provides the enclosed product(s) under the following conditions:

This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and supply terminals. This evaluation board may be used with any development system or other source of I/O signals by simply connecting it to the host MCU or computer board via off-theshelf cables. This evaluation board is not a Reference Design and is not intended to represent a final design recommendation for any particular application. Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking design as well as attention to supply filtering, transient suppression, and I/O signal quality.

The goods provided may not be complete in terms of required design, marketing, and or manufacturing related protective considerations, including product safety measures typically found in the end product incorporating the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. For any safety concerns, contact NXP sales and technical support services.

Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the date of delivery and will be replaced by a new kit.

NXP reserves the right to make changes without further notice to any products herein. NXP makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does NXP assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typical”, must be validated for each customer application by customer's technical experts.

NXP does not convey any license under its patent rights nor the rights of others. NXP products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the NXP product could create a situation where personal injury or death may occur.

Should the Buyer purchase or use NXP products for any such unintended or unauthorized application, the Buyer shall indemnify and hold NXP and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges NXP was negligent regarding the design or manufacture of the part. NXP and the NXP logo are trademarks of NXP B.V. All other product or service names are the property of their respective owners. © 2018 NXP B.V.

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FRDM33772BTPLEVB

Featuring the MC33772B battery cell controller IC

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3 Getting started

The NXP analog product development boards provide an easy-to-use platform for evaluating NXP products. These development boards support a range of analog, mixedsignal, and power solutions. These boards incorporate monolithic integrated circuits and system-in-package devices that use proven high-volume technology. NXP products offer longer battery life, a smaller form factor, reduced component counts, lower cost, and improved performance in powering state-of-the-art systems.

The tool summary page for FRDM33772BTPLEVB is at nxp.com/FRDM33772BTPLEVB. The overview tab on this page provides an overview of the device, a list of device features, a description of the kit contents, links to supported devices and a Get Started section.

The Get Started section provides information applicable to using the FRDM33772BTPLEVB.

1. Go to nxp.com/FRDM33772BTPLEVB.

2. On the Overview tab, locate the Jump To navigation feature on the left side of the

window.

3. Select the Get Started link.

4. Review each entry in the Get Started section.

5. Download an entry by clicking on the linked title.

After reviewing the Overview tab, visit the other related tabs for additional information:

• Documentation: Download current documentation.

• Software & Tools: Download current hardware and software tools.

• Buy/Parametrics: Purchase the product and view the product parametrics.

After downloading files, review each file, including the user guide, which includes setup instructions. If applicable, the Bill of Materials (BOM), suporting schematics, and layout are available via NXP DocStore. [6]

3.1 Kit contents/packing list

The kit contents include:

• Assembled and tested evaluation board/module in anti-static bag

• Quick-start guide

3.2 Required equipment

To use this kit, you need:

• A 3- to 6-cell battery pack, such as BATT-14AAAPACK, or a battery pack emulator,

such as BATT-6EMULATOR

4 Getting to know the hardware

4.1 Board overview

The FRDM33772BTPLEVB serves as a hardware evaluation tool in support of NXP's MC33772B device. The MC33772B is a battery cell controller that monitors up to 6 lithium-ion battery cells. It is designed for use in both automotive and industrial

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FRDM33772BTPLEVB

Featuring the MC33772B battery cell controller IC

User guide Rev. 1.0 — 22 June 2018

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applications. The device performs ADC conversion on the differential cell voltages and currents. It is also capable of battery charge coulomb counting and battery temperature measurements. The FRDM33772BTPLEVB is an ideal platform for rapid prototyping of MC33772B-based applications that involve current, voltage, and temperature sensing.

The information is digitally transmitted to a microcontroller for processing. The evaluation board can be used in conjunction with a transceiver physical layer transformer driver (MC33664) to convert MCU SPI data bits to pulse bit information for the MC33772B and vice versa.

4.2 Board features

This FRDM33772BTPLEVB's main features are as follows:

• Daisy chain device connection

• LED indicator for operation mode

• Cell-balancing resistors

• Cell sense input with RC filter

• GPIO: digital I/O, wake-up inputs, convert trigger inputs, ratiometric analog inputs,

analog inputs with absolute measurements

• EEPROM (connected to the IC with I2C interface) to store user-defined calibration

parameters

• Fault detection pin report

• Current Measurement Input via external shunt

4.3 Block diagram

Figure 1. Block diagram

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4.4 Device features

The MC33772B is a battery cell controller IC designed to monitor battery characteristics, such as voltage, current and temperature. The MC33772B contains all the circuit blocks necessary to perform synchronous battery cell voltage/current measurement, coulomb counting, cell temperature measurement and integrated cell balancing. The device supports the following functions:

Table 1. MC33772B device features

Device Description Features

MC33772B Battery cell controller • 5.0 V ≤ VPWR ≤ 30 V operation, 40 V transient

• 3 to 6 cells management

• 0.8 mV total cell voltage measurement error

• Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI

• Addressable on initialization

• Synchronized cell voltage/current measurement with coulomb count

• Total stack voltage measurement

• Seven GPIO/temperature sensor inputs

• 5.0 V reference supply output with 5 mA capability

• Automatic over/undervoltage and temperature detection routable to fault pin

• Integrated sleep mode over/undervoltage and temperature monitoring

• Onboard 300 mA passive cell balancing with diagnostics

• Hot plug capable

• Detection of internal and external faults, as open lines, shorts, and leakages

• Designed to support ISO 26262 up to ASIL D safety system

• Fully compatible with the MC33772 for a maximum of 14 cells

• Qualified in compliance with AEC-Q100

4.5 Board description

The FRDM33772BTPLEVB allows the user to exercise all the functions of the MC33772B battery controller cell.

Figure 2. Board description

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Featuring the MC33772B battery cell controller IC

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Table 2. Board description

Name Description

MC33772B Battery-cell controller IC

4.6 VCOM LED

The VCOM LED is located on the board as shown in Figure 3.

Figure 3. VCOM LED

The VCOM LED indicates when the device is in normal mode. Upon reset, the MC33772B enters into normal mode (VCOM turns on). If there is no activity on the bus after a timeout period of 60 seconds, the device enters low-power idle mode (VCOM turns off). Once the device is initialized, if no communication occurs on the TPL bus after one second, the device resets and the LED turns off (VCOM off). Depending on the device settings, the VCOM LED may flash 0.1...8 seconds during cyclic acquisition.

4.7 Test-point definitions

Figure 4 shows the location of the test points on the board.

+ 11 hidden pages

NXP Semiconductors FRDM33772BTPLEVB User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual