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[原创] ADI ADP5350高级电池管理PMIC解决方案

关键词:电源管理 电池管理 PMIC

时间:2017-05-25 11:13:28       作者:ADI       来源:中电网

ADI公司的ADP5350是集成感性升压LED和三个LDO调节器的高级电池管理PMIC,一个用于单锂离子/锂离子聚合物电池充电的高性能降压调节器,一个燃油表,一个用于LED背光照明的高度可编程升压调节器,一个超低静态电流低压差(LDO)调节器和两个通用LDO调节器,主要用在可充电锂离子和锂离子聚合物电池供电设备,便携式消费电子设备,便携式医疗设备,便携式仪器仪表设备和可穿戴设备.本文介绍了ADP5350主要特性,功能框图,典型应用电路图以及评估板ADP5350CP-EVALZ主要特性,电路图,材料清单和PCB设计图.

The ADP5350, a power management IC (PMIC), combines onehigh performance buck regulator for single Li-Ion/Li-Ionpolymer battery charging, a fuel gauge, a highly programmableboost regulator for LED backlight illumination, and three 150 mALDO regulators.

The ADP5350 operates in trickle charge mode and in constantcurrent (CC) and constant voltage (CV) fast charge mode. Itfeatures an internal field effect transistor (FET) that permitsbattery isolation on the system power side.

The ADP5350 fuel gauge is a space-saving and low currentconsuming solution. It is optimal for rechargeable Li-Ion batterypowereddevices, and features a voltage-based, battery SOCmeasurement function.

The ADP5350 boost regulator operates at a 1.5 MHz switchingfrequency. It can be operated as a constant voltage regulator oras a supplemental constant current regulator for multiple LEDbacklight drivers.

The ADP5350 LED drivers can support a wide range of LEDbacklight configurations, either multiple LEDs in parallel or inseries.

The ADP5350 low dropout (LDO) regulators are optimized tooperate at low shutdown current and quiescent current to extendbattery life. The device also operates as a load switch that can befully turned off or on.

The I2C-compatible interface enables the programmability of allparameters, including status bit readback for operation monitoringand safety control.

The ADP5350 operates over the −40℃ to +125℃ junctiontemperature range and is available in a 32-lead, 5 mm × 5 mmLFCSP package.

ADP5350主要特性:

Switching mode USB battery charger
High accuracy and programmable charge terminal voltageand charge current
3 MHz buck for high efficiency and small footprint
Tolerant input voltage from −0.5 V to +20 V (USB VVBUSx)
Power path control allows system to operate with dead ormissing battery
Compliant with JEITA charge temperature specification
Voltage-based state of charge (SOC) calculation algorithm
Extra low quiescent current in sleep mode
Battery impedance chemistry (Li-Ion) compensation
Battery temperature compensation
No need for external sense resistor
Boost regulator with 5-channel LED driver
Support up to 4 LED in series or in parallel
5 independent programmable LED current sinks
64 programmable LED current levels (up to 20 mA)
Programmable on and off timer for LED blinking
Adaptive headroom control to maximize the efficiency
Three 150 mA linear LDO regulators
Ultralow IQ with zero load at 1 μA typical for LDO1
Optional load-switch full turn-on mode
Full I2C programmability with dedicated interrupt pin

ADP5350应用:

Rechargeable Li-Ion and Li-Ion polymer battery-powereddevices
Portable consumer devices
Portable medical devices
Portable instrumentation devices
Wearable devices

图1.ADP5350功能框图

图2.ADP5350典型应用电路图

图3.ADP5350带LED屏的锂电池充电应用电路图

图4.ADP5350 OLED屏升压应用电路图

评估板ADP5350CP-EVALZ

Evaluating the ADP5350 Battery Management PMIC with Inductive Boost LED and Three LDO Regulators

This user guide describes the hardware and software for the evaluation of the ADP5350CP-EVALZ evaluation board, and includes detailed schematics and printed circuit board (PCB) layouts.

The ADP5350 combines one high performance buck regulator for single Li-ion/Li-ion polymer battery charging, a fuel gauge, a highly programmable boost regulator for LED backlight illumination, one ultralow quiescent current low dropout (LDO) regulator, and two general-purpose LDO regulators.

The ADP5350CP-EVALZ evaluation board supports an external USB dongle connection and the GUI software allows the user to evaluate the comprehensive functionalities provided by the I2C interface.

The ADP5350 operates over the −40℃ to +125℃ junction temperature range and is available in a 32-lead, 5 mm × 5 mm LFCSP package.

Full details on the device are provided in the ADP5350 data sheet, available from Analog Devices, Inc., which must be consulted in conjunction with this evaluation board user guide.

评估板ADP5350CP-EVALZ主要特性:

Input voltage: 4.0 V to 5.38 V
Full featured evaluation board for the ADP5350
Evaluation software and installation CD included
Simple device measurements and demonstrable with
A voltage supply
A battery or battery simulator
Load resistors or an electrical load

图5.评估板ADP5350CP-EVALZ外形图

图6.评估板ADP5350CP-EVALZ LFCSP板连接图

图7.评估板ADP5350CP-EVALZ电路图
评估板ADP5350CP-EVALZ材料清单:


图8.评估板ADP5350CP-EVALZ PCB设计图(顶层)

图9.评估板ADP5350CP-EVALZ PCB设计图(第二层)

图10.评估板ADP5350CP-EVALZ PCB设计图(第三层)

图11.评估板ADP5350CP-EVALZ PCB设计图(底层)
详情请见:
http://www.analog.com/media/en/technical-documentation/data-sheets/ADP5350.pdf
http://www.analog.com/media/en/technical-documentation/user-guides/ADP5350CP-EVALZ-UG-1104.pdf
ADP5350.pdf
ADP5350CP-EVALZ-UG-1104.pdf

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