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Texas Instruments bq2477x SMBus NVDC Battery Charge Controllers

Texas Instruments bq2477x SMBus NVDC Battery Charge Controllers are high-efficiency, synchronous, NVDC-1 battery charge controllers. Each offers low component count for space-constraint, multi-chemistry battery charging applications. The power path management allows the system to be regulated at battery voltage. It does not, however, drop below system minimum voltage (programmable). With this feature, the system keeps operating even when the battery is completely discharged or removed. The power path management allows the battery to provide supplement current to the system to keep the input supply from being overloaded.

Features

  • Host-controlled NVDC-1 1S-4S battery charge controller with 4.5V to 24V input range support SMBus (bq24770) and I2C (bq24773)
  • System instant-on operation with no battery or deeply discharged battery
  • Supplement mode with synchronous BATFET control when adaptor is fully loaded
  • Ultra fast input current DPM at 100µs
  • Ultra low quiescent current of 600µA and high PFM light load efficiency >80% at 20mA load to meet energy star and ErP Lot6.
  • High accuracy power / current monitor for CPU throttling comprehensive PROCHOT profile
  • Input and battery current monitor (IADP/IBAT)
  • System power monitor (PMON)
  • Programmable input current limit, charge voltage, charge current and minimum system voltage regulation ±0.5% charge voltage (16 mV/step)
  • ±2% input/charge current (64mA/step)
  • ±2% 40x input / 16x discharge / 20x charge current monitor
  • Support battery LEARN function
  • High integration NMOS ACFET and RBFET driver
  • PMOS battery FET gate driver
  • Internal loop compensation
  • Independent comparator
  • Automatic trickle charge to wake up gas gauge
  • 600kHz to 1.2MHz programmable switching frequency
  • USB Power Delivery (PD) controller supports PD2.0 and PD3.0 specifications.
  • Supports fast role swap
  • Mode configuration for source (Host), sink (Device), or source-sink
  • Bi-phase marked encoding/decoding (BMC)
  • Physical layer and policy engine
  • Configurable at boot and host-controlled
  • USB Type-C specification compliant cable orientation and role detection
  • Assign CC and VCONN pins
  • Advertise default, 1.5A or 3A for Type-C power
  • Port power switch 5V, 3A switch to VBUS for Type-C power
  • 5V to 20V, 3A bidirectional switch to or from VBUS for USB PD power
  • 5V, 600mA switches for VCONN
  • Overcurrent limiter, overvoltage protector
  • Slew rate control
  • Hard reset support
  • Port data multiplexer USB 2.0 HS data, UART data, and low speed endpoint
  • Sideband Use Data for Alternate Modes (DisplayPort and Thunderbolt)
  • Power management gate control and current sense for external 5V to 20V, 5A bidirectional switch (Back-to-Back NFETs)
  • Power supply from 3.3V or VBUS source
  • 3.3V LDO output for dead battery support
  • BGA MicroStar junior package 0.5mm pitch
  • Through-hole via compatible for all pins

Related Solution

Texas Instruments Power Management Solutions

Publicado: 2015-07-07 | Actualizado: 2022-03-11