FRDM33771BTPLEVB Featuring the MC33771B battery cell controller IC Rev. 1.
NXP Semiconductors FRDM33771BTPLEVB Featuring the MC33771B battery cell controller IC 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.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC 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.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC 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 FRDM33771BTPLEVB is an ideal platform for rapid prototyping of MC33771B-based applications that involve current, voltage, and temperature sensing.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC 4.3 Block diagram Figure 1. Block diagram 4.4 Device features The MC33771B is a battery cell controller IC designed to monitor battery characteristics, such as voltage, current and temperature. The MC33771B contains all the circuit blocks necessary to perform synchronous battery cell voltage/current measurement, coulomb counting, cell temperature measurement and integrated cell balancing.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Table 1. MC33771B device features Device Description Features MC33771B Battery cell controller • • • • • • • • • • • • • • • • • 9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient 7 to 14 cells management Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI Addressable on initialization 0.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Figure 2. Board description Table 2. Board description Name Description MC33771B Battery-cell controller IC GPIO:NTC[0…6] Support off-board NTC Fault detection Fault lines 4.6 VCOM LED The VCOM LED is located on the board as shown in Figure 3. FRDM33771BTPLEVBUG User guide All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 28 June 2018 © NXP B.V. 2018. All rights reserved.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Figure 3. VCOM LED The VCOM LED indicates when the device is in normal mode. Upon reset, the MC33771B 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).
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Table 3.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Pin # Name Description Other — No connection Table 6.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Table 9. Cell connector (J26) Pin # Connection Description J26-1 J26-2 VBAT MC33771B Power supply J26-3 J26-4 CT_14 CB_14 Cell pin 14 input with external LPF resistor. Cell balance driver. Terminate to cell 14 cell balance load resistor J26-5 J26-6 CT_13 CB_14:13_C Cell pin 13 input with external LPF resistor. Cell balance 14:13 common.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC After a reset, the EEPROM is not enabled. When the EEPROM is enabled, the device can load the EEPROM calibration parameters into the MC33771B registers. 4.10 GPIO configuration The FRDM33771BTPLEVB offers seven customizable GPIOs [GPIO_0...GPIO_6] for measuring external temperature with on-board or off-board NTCs. The off-board NTC connection is described in Section 6.5 "Off-board NTC configuration ". 4.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Figure 6. FRDM33664BEVB 6 Configuring the hardware 6.1 Battery stack connection A minimum of 7 cells and a maximum of 14 cells can be monitored. NXP provides a 14cell battery emulator board, BATT-14EMULATOR. This board provides an intuitive way to change the voltage across any of the 14 cells of an emulated battery pack as well as the voltage across an emulated current sense shunt resistor.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Figure 7. Battery stack connection 6.2 Jumper connection One hand-soldered jumper (J22) on the EVB is used to set the GPIO0 pin input. In position 1-2 (default), the NTC (NTC1) is connected to GPIO0 pin of the MC33771B. This input can be used as analog input. If the jumper is placed in position 2-3, the GPIO0 can be used as fault input for fault daisy chain function.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC 6.3 TPL communication connection In a high-voltage Isolated application with a daisy chain configuration, up to 15 FRDM33771BTPLEVB boards may be connected. The TPL connections use the COMM (J23) connector. Figure 8. FRDM33771BTPLEVB board setup 6.4 Fault chain connection The FAULT chain connection is optional. When used, it connects through the FAULT (J21) connector.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Figure 9. Fault chain connection 6.5 Off-board NTC configuration FRDM33771BTPLEVB supports off-board NTC, please follow the instruction in the following table. Table 10.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Table 11. Bill of materials Part number Description M50-9101742 34-pin ribbon cable BATT-14AAAPACK 3- to 14-cell configurable AAA battery pack BATT-14EMULATOR 14-cell slider battery pack emulator kit with shunt for current sense FRDM33664BEVB EVB for MC33664ATL Isolated Network High-Speed Transceiver 8 References [1] Board summary page — nxp.com/FRDM33771BTPLEVB [2] Product summary page — nxp.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC 10 Legal information Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. 10.1 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions.
FRDM33771BTPLEVB NXP Semiconductors Featuring the MC33771B battery cell controller IC Tables Tab. 1. Tab. 2. Tab. 3. Tab. 4. Tab. 5. Tab. 6. MC33771B device features ...............................6 Board description .............................................. 7 Test points .........................................................9 Connector (J1) .................................................. 9 Connector (J10) ................................................ 9 GPIO connector (J9) ................
NXP Semiconductors FRDM33771BTPLEVB Featuring the MC33771B battery cell controller IC Contents 1 2 3 3.1 3.2 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 5 6 6.1 6.2 6.3 6.4 6.5 7 8 9 10 FRDM33771BTPLEVB ......................................... 1 Important notice .................................................. 2 Getting started .................................................... 3 Kit contents/packing list ..................................... 3 Required equipment ................
