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AXP199
Schematics
51 pgs1.17 Mb0

X-Powers AXP199 Schematics

Enhanced single Cell Li-Battery and Power System Management IC
DATASHEET
V1.01 April.22 2011
AXP199
X-Powers
© 2010 X-Powers Limited - All rights reserved
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
目录
1．概述(Summary)............................................................................................................................................ 3
2．特性(Feature)................................................................................................................................................ 4
3．典型应用(Typical Application).................................................................................................................5
4．极限参数(Absolute Maximum Ratings) ...............................................................................................6
5．电气特性(Electrical Characteristics)....................................................................................................... 6
6．典型特性(Typical Characteristics)........................................................................................................... 9
7．管脚定义(Pin Description)....................................................................................................................... 13
8．功能框图(Functional Block Diagram)..................................................................................................15
9．控制和操作(Control and Operating) .................................................................................................... 16
9.1 开关机和复位(Power On/Off & Reset) .......................................................................................... 16
9.2 电源通路管理(IPS)............................................................................................................................... 17
9.3 自适应充电器(Adaptive Charger) ................................................................................................... 20
9.4 备用电池(Backup Batttery) .............................................................................................................. 22
9.5 多路电源输出(Multi-Power Outputs)............................................................................................. 23
9.6 信号采集系统(Signal Capture)......................................................................................................... 24
9.7 多功能管脚说明(Multi-Function Pin Description) ...................................................................... 25
9.8 定时器(Timer)...................................................................................................................................... 25
9.9 HOST 接口及中断(TWSI and IRQ)................................................................................................... 26
9.10 寄存器(Registers)............................................................................................................................. 27
10．封装(Package) .......................................................................................................................................... 49
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
1．概述(Summary)
AXP199 是高度集成的电源系统管理芯片，针对单芯锂电池(锂离子或锂聚合物)且需要多路电源转换 输出的应用，提供简单易用而又可以灵活配置的完整电源解决方案，充分满足目前日益复杂的应用处理 器系统对于电源相对复杂而精确控制的要求。
AXP199 内部集成了一个自适应的 USB-Compatible 的充电器，3 路降压转换器(Buck DC-DC converter)，4 路线性稳压器(LDO)，电压/电流/温度监视等多路 12-Bit ADC。为保证电源系统安全稳定， AXP199 还整合了过/欠压(OVP/UVP)、过温(OTP)、过流(OCP)等保护电路。
AXP199 的智慧电能平衡(Intelligent Power Select, IPS™)电路可以在 USB 以及外部交流适配器、锂电
池和应用系统负载之间安全透明的分配电能，并且在只有外部输入电源而没有电池(或者电池过放/损坏) 的情况下也可以使应用系统正常工作。
AXP199 具有外部适配器和 USB 以及电池等三输入能力，支持可充电备用电池。
AXP199 提供了一个与主机通讯的两线串行通讯接口:Two Wire Serial Interface (TWSI)，应用处理器可 以通过这个接口去打开或关闭某些电源输出，设置它们的电压，访问内部寄存器和多种测量数据(包括 Fuel Gauge)。高精度（0.5%）的电量测量数据方便消费者更清楚的实时掌握电能使用状况，给消费者带来前 所未有的设备电能使用体验。
AXP199 提供 6mm x 6mm 48-pin QFN 封装。
应用产品
z 手持式移动设备
智能移动电话, PMP/MP4, 数 码相机, 数字摄像机, 手持导 航设备 GPS, PDA, 手持数字 广播电视接收机
z 移动互联网设备 MID z 数码相框，便携 DVD 播放器，
超便携移动电脑 UMPC and UMPC-like，学习机
z 应用处理器电路系统
Application Processor systems
z 其它电池和多电源应用系统
管脚定义
2．特性(Feature)
• 电源管理 (IPS)
o 宽输入电压范围：
2.9V~6.3V (AMR：-0.3V~15V)
o 可配置的高效智慧电能平衡“IPS™”系统 o 自适应 USB 或交流适配器限压限流
(4.4V/500mA/100mA)
o 内部理想二极管的等效内阻小于 100mΩ
• 全集成充电器 (Charger)
o 内置 MOSFET 最大充电电流可达 1.4A o 支持电池温度监测 o 全面支持 USB 充电，符合规范要求 o 充电精度高，误差小于 0.5% o 支持 4.1V/4.15V/4.2V/4.36V 等多种电池 o 自动进行充电流程控制 o 可直接驱动 LED 指示充电状态 o 根据系统负载情况自动调节充电电流
• 备用电池 (Backup Battery)
o 可使用备用电池给 RTC 模块供电 o 支持备用电池充电，可设置充电电流
• 3 路同步降压转换器 (DC-DC)
o DC-DC1：可在 0.7V~3.5V 之间调节,
25mV/step,
o DC-DC2：可在 0.7-2.275V 之间调节,
25mV/step, 驱动能力 1.6A, 支持 VRC
o DC-DC3：可在 0.7-3.5V 之间调节,
25mV/step, 驱动能力 0.7A
• 4 路线性稳压器 (LDO)
o LDO1：30mA，始终有效 o LDO2：低噪声 LDO，1.8V~3.3V 可调节，
100mV/step, 驱动能力 200mA
o LDO3：低噪声 LDO, 1.8-3.3V 可调节,
100mV/step, 驱动能力 200mA
o LDO
注：VRC，Voltage Ramp Control，电压斜
率控制。
IO0
100mV/step, 驱动能力 50mA
驱动能力 1.2A
：低噪声 LDO, 1.8-3.3V 可调节,
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
• 信号采集系统 (Signal Capture)
o 内建 16 路 12 Bit ADC o 接受 4 路外部信号输入 o 提供电池和外部输入电源的电流电压数
据
o 内建高精度库仑计及 Fuelgauge 系统 o 提供丰富的电源管理信息，如瞬时耗电
(mA or mW)，剩余电池电量(% or mAh)， 充电状态(%) 和剩余电池使用时间或充 电时间等
o 低电警告及保护 o 提供芯片温度信息
• 应用处理器接口 (Host Interface)
o Host 可以通过 TWSI 接口进行数据交换 o 可以灵活配置的中断管理 o 灵活的管脚功能设置，多路 GPIO 可分别
设置为 IO、PWM、电流源等功能
o 内置计时器 o 提供四组寄存器，可用于系统关机时的
数据保存
• 系统管理(System Management)
o 可以软复位或硬复位 o 支持软关机或硬关机，支持外部唤醒开
机
o 支持输出电压监测、自诊断功能 o PWROK 用于系统复位或关机指示 o 外部电源检测(插入/移除/驱动能力不足) o 所有输出电压都支持软启动 o 过/欠压保护 (OVP/UVP) o 过流保护 (OCP) o 过温保护 (OTP) o 支持 OTG VBUS 电源状态设置/监测
• 高整合度(Fully Integration)
o 内部产生高精度参考电压 o 内置 MOSFET
Enhanced single Cell Li-Battery and Power System Management IC
3．典型应用(Typical Application)
AXP199
GND
IPSOUT
Adapter
VBUS
IPSOUT
VCCIO
10uF
GND
GND
AGND
AGND
AGND
IPSOUT
10uF
C2
GND
IPSOUT
AGND
GND
GND
GND
10K 1%
C1
GND
GND
C7
1u
C9
0 Ohm
C10
2.2k
2.2k
51k
C3
0.22u
C4
10uF
C5
4.7uF
470ohm
1uF
C6
200K
22 Ohm
0.22u
10uF
C8
4.7uF
Power On/Off
37
TS
34
BAT
35
BAT
38
IPSOUT
39
IPSOUT
33
ACIN
32
ACIN
31
VBUS
41
GPIO3
42
GPIO4
43
NC
36
CHGLED
30
BACKUP
26
VINT
24
BIAS
21
APS
25
VREF
22
AGND
19
GPIO0/LDOio0
18
GPIO1
20
GPIO2
23
PWRON
4
N_OE
6
N_VBUSEN
48
IRQ
2
SCK
1
SDA
AXP199
N_RSTO/GPIO5
DCDC1
LX1
VIN1
PGND1
DCDC2
LX2
VIN2
PGND2
DCDC3
LX3
PGND3
VIN3
LDOIN
LDO1
LDO2
EXTEN
EP
LDO3
PWROK
GPIO6
GPIO7
47
45
44
46
10
8
7
9
17
15 16
14
IPSOUT
13
28
12
EXTEN
40
49
11
5
3 27 29
2.2uH
IPSOUT
4.7uH
IPSOUT
4.7uH
1 Ohm
1uF
C23
1uF
GND
GND
C19
C20
4.7uF
4.7u
10u
C15
2.2uF
10uF
C21 GND
C22
C11
C12
C13
C14
C16
C17
C18
4.7uF
GND
10uF
10uF
1nF
10uF
1nF
1nF
DCDC1
GND
GND
DCDC2
GND
GND
DCDC3
GND
GND
GND
LDO1
LDO2
LDO3
C24
NC/51k
LDO1
SDA
SCK NMI#
DRVVBUS
HOST
RESET
Reset
GND
10k
10k
LDO1
VCCIO
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
4．极限参数(Absolute Maximum Ratings)
Symbol Description Value Units
ACIN Input Voltage 输入电压 -0.3 to 15 V VBUS Input Voltage 输入电压 -0.3 to 15 V
TJ Operating Temperature Range 工作温度 -40 to 130 ℃ Ts Storage Temperature Range 储运温度 -40 to 150 ℃
T
Maximum Soldering Temperature (at leads，10sec)
LEAD
锡焊温度
V
Maximum ESD stress voltage，Human Body Model
ESD
抗静电能力
PD Internal Power Dissipation
内部功率消耗耐受
300 ℃
>4000 V
2100 mW
5．电气特性(Electrical Characteristics)
VIN =5V， BAT=3.8V， TA= 25℃
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS ACIN
VIN ACIN Input Voltage 3.8 6.3 V
I
V
OUT
V
ACIN Under Voltage Lockout 3.8 V
UVLO
V
IPS Output Voltage 2.9 5.0 V
OUT
R
Internal Ideal Diode On
ACIN
VBUS
VIN VBUS Input Voltage 3.8 6.3 V
I
V
OUT
V
VBUS Under Voltage Lockout 3.8 V
UVLO
V
IPS Output Voltage 2.9 5.0 V
OUT
R
Internal Ideal Diode On
VBUS
Battery Charger
V
BAT Charge Target Voltage -0.5% 4.2 +0.5% V
TRGT
I
Charge Current 780 1320 mA
CHRG
I
Trickle Charge Current 10% I
TRKL
Current Available Before
OUT
Loading BAT
Resistance
Current Available Before
OUT
Loading BAT
Resistance
500mV Voltage Drop 2000 mA
PIN to PIN, ACIN to
200 mΩ
IPSOUT
400mV Voltage Drop 500 900 mA
PIN to PIN, VBUS to
300 mΩ
IPSOUT
CHRG
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
V
Trickle Charge Threshold
TRKL
Voltage
ΔV
Recharge Battery Threshold
RECHG
Voltage
T
Charger Safety Timer
TIMER1
Termi n ation Time
T
Charger Safety Timer
TIMER2
Termi n ation Time
I
End of Charge Indication
END
Current Ratio
Backup Battery
V
Backup Battery Charge Target
TRGT
Voltage
I
Backup Battery Charge Current 50 200 400 uA
CHRG
I
Current when use Backup
Backup
Battery
NTC
Threshold Voltage
Voltage
VTE NTC Disable Threshold Voltage Falling Threshold
Ideal Diode
R
Internal Ideal Diode On
ds(on)
Resistance(BAT to IPSOUT)
3.0 V
Threshold Voltage
Relative to V
TAR G ET
-100 mV
Trickle Mode 40 Min
CC Mode 480 Min
CV Mode 10% 15% I
2.5 3.0 3.1 V
10 15 uA
Charge 2.112 VTL Cold Temperature Fault
Discharge
Charge 0.397 VTH Hot Temperature Fault Threshold
Discharge
0
3.264
3.226
0
3.264
0.282
0.2 V
Hysteresis
100 mΩ
mA
CHRG
mA
V
V
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS Off Mode Current
I
OFF Mode Current BAT=3.8V 27 μA
BATOFF
I
SUSPEND
USB VBUS suspend Mode
current
BAT=3.8V， VBUS=5V，
86 μA
N_VBUSEN=1
Logic
VIL Logic Low Input Voltage 0.3 V
VIH Logic High Input Voltage 2 V
TWSI
VCC Input Supply Voltage 3.3 V
ADDRESS TWSI Address 0x68
f
Clock Operating Frequency 400 1200 kHZ
SCK
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
tf Clock Data Fall Time 2.2Kohm Pull High 60 ns
tr Clock Data Rise Time 2.2Kohm Pull High 100 ns
DCDC
f
Oscillator Frequency Default 1.5 MHz
OSC
DCDC1
I
Input Current PFM Mode
VIN1
I
I
PMOS Switch Current Limit PWM Mode 1600 mA
LIM1
I
Available Output Current PWM Mode 1200 mA
DC1OUT
DC1OUT
=0
26 μA
V
Output Voltage Default 0.7 3.3 3.5 V
DC1OUT
DCDC2
I
Input Current PFM Mode
VIN2
I
I
PMOS Switch Current Limit PWM Mode 2300 mA
LIM2
I
V
Available Output Current PWM Mode 1600 mA
DC2OUT
Output Voltage Range
DC2OUT
DC2OUT
=0
20 μA
0.7 1.25 2.275
V
DCDC3
I
Input Current PFM Mode
VIN3
I
I
PMOS Switch Current Limit PWM Mode 1000 mA
LIM3
I
V
Available Output Current PWM Mode 700 mA
DC3OUT
Output Voltage Range
DC3OUT
DC3OUT
=0
20 uA
0.7 2.5 3.5
V
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS LDO1
V
Output Voltage I
LDO1
LDO1
=1mA
-1%
1.25
1.8
2.5
1%
V
3.3
I
Output Current 30 mA
LDO1
LDO2
V
Output Voltage I
LDO2
I
Output Current 200 mA
LDO2
=1mA -1% 3 1% V
LDO2
IQ Quiescent Current 100 μA
PSRR Power Supply Rejection Ratio I
eN Output Noise,20-80KHz Vo=3V , Io=150mA 28 μV
=60mA，1KHz TBD dB
LDO2
RMS
LDO3
V
Output Voltage I
LDO3
I
Output Current 200 mA
LDO3
=1mA -1% 3.3 1% V
LDO3
IQ Quiescent Current 100 μA
PSRR Power Supply Rejection Ratio I
=10mA， 1KHz TBD dB
LDO3
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
eN Output Noise,20-80KHz Vo=1.8V , Io=150mA 18 μV
LDO
V
I
LDOIO0
IO0
Output Voltage I
LDOIO0
=1mA -1% 3.3 1% V
LDOIO0
Output Current 50 mA
RMS
IQ Quiescent Current 90 μA
PSRR Power Supply Rejection Ratio I
eN Output Noise,20-80KHz Vo=1.8V, Io=30mA 18 μV
=10mA，1KHz TBD dB
LDOIO0
RMS
6．典型特性(Typical Characteristics)
DC-DC Efficiency vs. Load(3.8Vin)
DC-DC Load Transient(Typical)
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
DC-DC Ripple
V
vs Temperature
REF
VQ.QW WPPIQPWE CC Confidential Page 10/50
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
V
vs Temperature
TRGT
VQ.QW WPPIQPWE CC Confidential Page 11/50
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
Off Mode Current vs V
BAT
VQ.QW WPPIQPWE CC Confidential Page 12/50
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
7．管脚定义(Pin Description)
Num Name Type Condition Function Description
1 SDA IO Data pin for serial interface,normally it connect a 2.2K
resistor to 3.3V I/O power
2 SCK I it is the Clock pin for serial interface,normally it connect a
2.2K resistor to 3.3V I/O power
REG9EH[7]
4 N_OE I Power output on/off switch
5 PWROK O Power good indication
6 N_VBUSEN I VBUS to IPSOUT Selection
7 VIN2 PI DCDC2 input source
8 LX2 IO Inductor Pin for DCDC2
9 PGND2 G NMOS Ground for DCDC2
10 DCDC2 I DC-DC2 feedback pin
11 LDO3 O Output Pin of LDO3
LDO1 Reset output 3 N_RSTO IO
GPIO[5]
GND:on； IPSOUT:off
GND:IPSOUT select VBUS
High:IPSOUT do not select VBUS
12 LDO2 O Output Pin of LDO2
13 LDOIN PI Input to LDO2 and LDO3
14 VIN3 PI DCDC3 input source
15 LX3 IO Inductor Pin for DCDC3
16 PGND3 G NMOS GND for DCDC3
17 DCDC3 I Feed back to DCDC3
18 GPIO1 IO
REG
93H[2:0]
19 GPIO0 IO
REG
90H[2:0]
20 GPIO2 IO
REG
92H[2:0]
21 APS PI Internal Power Input
22 AGND G Analog Ground
23 PWRON I Power On-Off key input，Internal 100k pull high to APS
GPIO 2
PWM 2
ADC Input
GPIO 0
Low noise LDO
ADC Input
GPIO 1
PWM 1
ADC Input
VQ.QW WPPIQPWE CC Confidential Page 13/50
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
24 BIAS IO External 200Kohm 1% resistor
25 VREF O Internal reference voltage
26 VINT PO Internal logic power, 2.5V
27 GPIO6 IO GPIO6 28 LDO1 O LDO1 output，for Host RTC block
29 GPIO7 IO GPIO7
30 BACKUP IO Backup battery pin
31 VBUS PI USB VBUS input
32，33 ACIN PI Adapter input
34，35 BAT IO Main Battery
36 CHGLED O charger status indication
37 TS I Battery Temperature sensor input or an external ADC input
38，39 IPSOUT PO System power source
40 EXTEN O External power module Enable
41 GPIO3 I GPIO3
42 GPIO4 I
43 NC O NC
44 VIN1 PI DCDC1 input source
45 LX1 IO Inductor Pin for DCDC1
46 PGND1 G NMOS Ground for DCDC1
47 DCDC1 I DCDC1 feedback pin
48 IRQ IO IRQ output or wakeup
49 EP G Exposed Pad, need to connect to system ground
REG95H[7]
GPIO4
VQ.QW WPPIQPWE CC Confidential Page 14/50
5
Enhanced single Cell Li-Battery and Power System Management IC
8．功能框图(Functional Block Diagram)
AXP199
VBUS
BAT
ACIN
N_VBUSEN
BACKUP
CHGLED
GPIO3
GPIO4
NC
PWRON
N_OE
IRQ
SCK SDA
TS
BIAS
VREF
VINT
Adaptive
Linear
charger
Serial Interface
Bat
Temperature
Monitor
Reference
Voltage
IPS
Control Logic
Register
12 bit ADC Current Monitor Voltage Monitor
Temperature Monitor
LDO1
LDO2
LDO3
DC-DC1
DC-DC2
DC-DC3
Output
voltage
monitor/LBO
IPSOUT APS
EXTEN
LDO1
N_RSTO/GPIO
LDOIN
LDO2
LDO3
DCDC1
LX1
VIN1
PGND1
DCDC2
LX2 VIN2
PGND2
DCDC3
LX3 VIN3
PGND3
GPIO7 GPIO6
GPIO2
GPIO1
GPIO0/LDOio0
PWROK
AGND EP
VQ.QW WPPIQPWE CC Confidential Page 15/50
AXP199
Enhanced single Cell Li-Battery and Power System Management IC
9．控制和操作(Control and Operating)
当AXP199 工作时，TWSI 接口 SCK/SDA 管脚上拉到系统 IO 电源，则 Host 可以通过此接口对 AXP199 的工作状态进行灵活的调整和监视，并可获得丰富的信息。
注:“Host”指的是应用系统的主处理器。 注:如下所指“外部电源”包含 ACIN 及 VBUS 输入。
9.1 开关机和复位(Power On/Off & Reset)
开关机按键(PEK)
AXP199 的 PWRON 管脚到 GND 之间可以连接一个按键，作为独立的开关机键 Power Enable Key(PEK)。AXP199 可以自动识别这个按键的“长按”和“短按”并做出相应的反应。
几个开机源(Power on Source)
1， ACIN、VBUS 及电池接入。 2， N_OE 由高变低。 3， PEK。
开机(Power On)
N_OE 为低时，当符合要求的主电源(ACIN 或 VBUS>3.8V，电池电压高于关机电压)接入时，AXP199
会自动开机(外部电源接入时是否自动开机可根据外部需求改写)。
而在 N_OE 为低且处于关机状态下，开机动作需要通过 PEK 操作来完成。 在有外部电源或电池的情况下，N_OE 由高到低的变化也会导致 AXP199 开机。
AXP199 可以由 PEK(按键时间超过“ONLEVEL”)开机。在实际应用中，Host 的定时(Alarm)输出信 号也可以连接到 PWRON—与 PEK 并联，Alarm 信号有效(低电平)时相当于 PEK 按下，也可以将 AXP199 开机。
开机后，DC-DC 和 LDO 将按照设定的时序顺序软启动。
关机(Power Off)
PEK“长按”时间大于 IRQLEVEL 时，在 PEK 中断服务程序中，Host 可将“寄存器 REG32H[7]” 写入“1”来通知 AXP199 进入关机状态。AXP199 进入关机状态时会关掉除 LDO1 之外的所有电源输出。
在下列情况下，AXP199 会自动关机:
1， 输入电压过低，低电保护； 2， 负载过大引起电源的输出电压过低，过负载保护；
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