1. Bu site çerez kullanmaktadır. Siteyi kullanmaya devam etmeniz halinde çerez kullanımı ile ilgili site koşullarını kabul etmiş sayılırsınız. Daha Fazlasını Öğren.

High Efficiency Synchronous Switch-Mode Charger Controller – Solar Battery Charger

Konusu 'Güç Kaynakları - Besleme Devreleri' forumundadır ve uydudoktoru tarafından 14 Ocak 2015 başlatılmıştır.

  1. uydudoktoru
    Offline

    uydudoktoru Tanınmış Üye Yönetici Yönetici

    Katılım:
    13 Haziran 2009
    Mesajlar:
    2.132
    Ödül Puanları:
    38
    [​IMG]

    Description
    The bq24650 is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.

    The bq24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.

    The bq24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The bq24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

    The bq24650 supports a battery from 2.1V to 26V with VFB set to a 2.1V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The bq24650 is available in a 16 pin, 3.5×3.5 mm2 thin QFN package.

    [​IMG]
    Features

    • Maximum Power Point Tracking (MPPT) Capability by Input Voltage Regulation
    • Programmable MPPT Setting
    • 5V-28V Input Solar Panel
    • 600kHz NMOS-NMOS Synchronous Buck Controller
    • Resistor Programmable Float Voltage
    • Accommodates Li-Ion/Polymer, LiFePO4, Lead Acid Chemistries
    • Accuracy
      • ±0.5% Charge Voltage Regulation
      • ±3% Charge Current Regulation
      • ±0.6% Input Voltage Regulation
    • High Integration
      • Internal Loop Compensation
      • Internal Digital Soft Start
    • Safety
      • Input Over-Voltage Protection
      • Battery Temperature Sensing
      • Battery Absent Detection
      • Thermal Shutdown
    • Charge Status Outputs for LED or Host Processor
    • Charge Enable on MPPSET Pin
    • Automatic Sleep Mode for Low Power Consumption
      • <15μA Off-State Battery Discharge Current
    • Small 3.5 × 3.5 mm2 QFN-16 Package
    • APPLICATIONS
      • Solar Powered Applications
      • Remote Monitoring Stations
      • Portable Handheld Instruments
      • 12V to 24V Automotive Systems
      • Current-Limited Power Source
     
Yüklüyor...

Sayfayı Paylaş