BQ25720集成電路（IC）的電池充電器規(guī)格書PDF中文資料

BQ25720屬于集成電路（IC）的電池充電器。由德州儀器制造生產(chǎn)的BQ25720電池充電器電池充電器 PMIC（電源管理集成電路）是元器件級產(chǎn)品系列，用于在電子設(shè)備中實現(xiàn)電池充電控制和充電管理功能。這些器件主要根據(jù)電池化學(xué)及其設(shè)計用于的電池數(shù)量來分類，可提供電化學(xué)電池和超級電容器安全充電所必需的電流或電壓調(diào)節(jié)和監(jiān)視功能。

1 Features

? TI patented quasi dual phase buck-boost narrow

voltage DC (NVDC) charger for USB-C Extended

Power Range (EPR) interface platform

– 3.5V to 40V input range to charge 2- to 5-cell

battery

– Charge current up to 16.3A/30A based on

5mΩ/2mΩ sensing resistor

– Input current limit up to 8.2A/16.4A based on

10mΩ/5mΩ sensing resistor

– Support USB 2.0, USB 3.0, USB 3.1, USB-C

power delivery and extended power range input

current setting

– Input Current Optimizer (ICO) to extract max

input power without overloading the adapter

– Integrated Fast Role Swap (FRS) feature

following USB-PD specification

– Seamless transition between quasi dual phase

buck, buck-boost, and boost operations

– Input current and voltage regulation (IINDPM

and VINDPM) against source overload

– Battery supplements system when adapter is

fully loaded

? TI patented dual ramdom spread spectrum

(DRSS) for meeting IEC-CISPR 32 EMI

specification

? TI patented Pass Through Mode (PTM) for >99

efficiency and battery fast charging support

? IMVP8/IMVP9 compliant system features for Intel

platform

– Enhanced Vmin Active Protection (VAP) mode

supplements battery from input capacitors

during system peak power spike following latest

Intel specification

– Comprehensive PROCHOT profile

– Two level discharge current limit PROCHOT

profile to avoid battery wear out

– System power monitor (PSYS)

? Input and battery current monitor through

dedicated pins

? Integrated 16-bit ADC to monitor voltage, current

and power

? Battery MOSFET ideal diode operation in

supplement mode

? Power up USB port from battery (USB OTG)

– 3V to 5V OTG

– Output current limit up to 3A based on 10mΩ

sensing resistor

? 600kHz/800kHz programmable switching

frequency

? SMBus host control interface for flexible system

configuration

? High accuracy for the regulation and monitor

– ±0.5 Charge voltage regulation

– ±2 Charge current regulation

– ±2 Input current regulation

– ±2 Input/charge current monitor

? Safety

– Thermal regulation and thermal shutdown

– Input, system, battery overvoltage protection

– Input, MOSFET, inductor overcurrent protection

? Package: 36-Pins 4.0mm × 5.0mm WQFN

2 Applications

? Standard notebook PC,Chromebook

? Appliances: battery charger,Oxygen concentrator

3 Description

The BQ25770G is a synchronous NVDC buck-boost

battery charge controller to charge a 2- to 5-cell

battery from a wide range of input sources including

USB adapter, extended power range (EPR) USBC

Power Delivery (PD) sources, standard power

range (SPR) USB-C Power Delivery (PD) sources

and traditional adapters. The device offers a low

component count, high efficiency solution for space

constrained, 2- to 5-cell battery charging applications.

The NVDC configuration allows the system to be

regulated based on battery voltage, but not drop

below system minimum voltage. The system keeps

operating even when the battery is completely

discharged or removed. When load power exceeds

input source rating, the battery goes into supplement

mode and prevents the system from crashing.