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参数资料
| 型号： | PWL6030B1AACMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA187 |
| 封装： | 7 X 7 MM, 0.40 MM PITCH, GREEN, FCBGA-187 |
| 文件页数： | 57/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
– Input current limit
– Fast-charge/termination current
– Charge voltage
– Input voltage collapse
– Safety timer
– Termination enable
Synchronous fixed-frequency PWM controller operating at 3 MHz with 0% to 99.5% duty-cycle
High-accuracy voltage and current regulation
Automatic high-impedance mode for low power consumption
Safety timer with reset control
Reverse leakage protection prevents battery drainage
Thermal regulation and protection
I/O overvoltage protection
Output for charging LED indicator
Automatic charge current setting (preventing charge input from collapsing) as charge time optimization
Boost mode operation for USB OTG supply (VBUS supply at 5 V/200 mA current)
The TWL6030 device supports a wide variety of rechargeable lithium-based battery technologies. Recent battery
technologies, such as Li-SiAn and LiFePo4, present a flat discharge region in the range of 3.2
–3.3 V;
technologies such as LiCoO2 and LiNiMnCoO2 present a flat discharge region in the range of 3.6
–3.7 V. To
support the different battery chemistries effectively, the TWL6030 device has programmable VBATMIN
thresholds.
The charging procedure consists of hardware-controlled preconditioning and precharging phases and
software-controlled full-charging phase. The charger also performs monitoring functions:
AC charger detection
VBUS detection
Battery presence detection
VBUS overvoltage detection
Battery overvoltage detection
Battery end-of-charge detection
Thermal protection
Watchdogs
Charging Phases
Preconditioning
Preconditioning is automatically enabled as soon as the charging source is detected and operates in a constant
current charging mode. During preconditioning the battery voltage is below 2.1 V (VBAT_SHORT) and the
charging current is limited to 30 mA (IBAT_SHORT). In this mode, the charger uses a linear charging operation
mode. This phase detects a defective (shorted) battery. As soon as the battery voltage is above 2.1 V, a
precharging phase is entered automatically.
Precharge Phase (Hardware Controlled)
The precharging phase is entered when battery voltage is above 2.1 V (VBAT_SHORT) and the charging source
is detected. If the charging source collapses during the precharge phase, the precharge current is automatically
reduced to a value that keeps the input voltage high enough to ensure proper operation of the precharge
circuitry.
The TWL6030 device supports two precharging modes:
Slow constant current precharging for 2.1 V
< VBAT < 3.54 V (VBUS current is limited to 92 mA from USB
standard downstream port)
Fast constant current precharging for 2.1 V
< VBAT < 3.54 V (VBUS current is limited to 470 mA and battery
charging current set to default charging current value when USB charging port detected)
60
Copyright
2010–2011, Texas Instruments Incorporated
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