Zurück zu Texas Instruments

Texas Instruments bq2477xEVM-540 Batterie-Laderegler-EVMs

Texas Instruments bq2477xEVM-540 Batterie-Laderegler-Evaluationsmodule (EVMs) sind zur Auswertung der bq2477x Bauteile ausgelegt. Die bq2477x Bauteile sind SMBus-geregelte NVDC-1-Laderegler mit n-Kanal-MOSFET-Selektor und Stromüberwachung. Der Eingangsspannungsbereich für den Abwärtswandler liegt zwischen 6 und 24 V, mit einem programmierbaren Ausgang von 1 bis 4 Zellen (bq2477x). Dieses Bauteil verfügt außerdem über einen Ladeausgangsstrombereich von 128 mA bis 8,128 A. In diesen Evaluationsmodulen ist das EV2400-Schnittstellengerät nicht enthalten. Dies muss separat bestellt werden, um jedes der bq2477x Evaluationsmodule zu bewerten.

Merkmale

  • Host-gesteuerter NVDC-1 1S-4S Batterielade-Controller: bq24770 SMBus; bq24773 I2C
  • Bietet einen Testpunkt für PROCHOT, IADP, IBAT, PMON, ILIM, REGN, ACOK, ACDET und Schaltknoten
  • Programmierbare Eingangsstrombegrenzung, Ladespannung, Ladestrom und Mindestsystem

Erforderliche Ausrüstung

  • Power Supplies
    • Power supply #1
      • A power supply capable of supplying 20V at 1A is required
    • Power supply #2
      • A power supply capable of supplying 3.3V at 0.2A is required
  • Load #1
    • A 20V (or above), 10A (or above) electronic load that can operate at a constant current mode
  • Load #2
    • A Kepco BOP36-12M, 0 ≈±36V/0 ≈±12A, bipolar operational power supply or equivalent
  • Meters
  • Six Fluke 75 multimeters (equivalent or better)
    • Four equivalent voltage meters and three equivalent current meters
      • The current meters must be capable of measuring 5A+ current
  • Computer
    • A computer with at least one USB port and a USB cable
    • The EV2400 USB driver and the bq2477x SMB evaluation software must be properly installed
  • Software
    • The bq2477x ICs are all compatible with the EV2300 hardware kit, but it is preferred to use the EV2400
      • There are two setup GUI install programs
        • The bq24770 Evaluation Software-2.0.0.2-Setup.exe (used for all SMB spins) program
        • The bq24773 Evaluation Software-2.0.0.2-Setup.exe program (used just for the I2C bq24773 version)
      • The launch executable file will load the EV2300 software first, followed by the bq2477x software
      • Verify if the GUI is configured for SMB or I2C by looking at the Mode listed above the Texas Instruments logo
      • Now is a good time to copy the two GUI setup files to your hard drive and then run as administrator (right-click on the file and select “Run as administrator”) to install the GUI software before connecting the hardware
  • EV2400 Controller
    • The EV2400 controller is an MSP430F5529 running at 4MHz
      • The controller firmware is stored in flash memory and is executed by the core at power-up
      • The controller communicates with the target device(s) through either: a 2-wire SMBus communication port, a 1-wire HDQ port, or a 2-wire EEPROM I2C port
      • The 2-wire SMBus communication port supports both SMBus and I2C protocols
      • CRC-8 checksum verification for the data packets prevents data corruption over the USB
      • The controller interfaces with the computer through a USB port
      • Device software (GUI) loaded on the computer is used to communicate with the device via the EV2400 controller to write and read registers on the device

Test Setup

Technische Zeichnung - Texas Instruments bq2477xEVM-540 Batterie-Laderegler-EVMs
Veröffentlichungsdatum: 2017-02-28 | Aktualisiert: 2025-03-05