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| 型号： | BQ78PL116EVM |
| 厂商： | Texas Instruments |
| 文件页数： | 13/35页 |
| 文件大小： | 0K |
| 描述： | EVAL MODULE FOR BQ78PL116 |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | 296-30796 BQ78PL116EVM-ND |
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Display Types
SLUSAB8B – OCTOBER 2010 – REVISED FEBRUARY 2011
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The bq78PL116 drives a three- to five-segment LED display in response to a pushbutton (LEDEN) input
signal. Each LED pin can sink up to 10 mA.
The bq78PL116 drives a three- to five-segment static liquid-crystal display.
The bq78PL116 drives a three- to five-segment electronic paper display. An external 15-V voltage source is
required. E Ink Corporation supplies this type of display.
The display type is selected via the parameter set.
Lifetime Logging (Readable via SMBus)
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Lifetime delivered ampere-hours
Last discharge average
Lifetime maximum power
Maximum/minimum temperature
Maximum/minimum pack voltage
Maximum/minimum cell voltage in a pack
Maximum charge and discharge currents
Power Modes
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Normal Mode: The bq78PL116 performs measurements and calculations, makes decisions, and updates
internal data approximately once per second. All safety circuitry is fully functional in this mode.
Standby Mode: The bq78PL116 performs as in normal mode, but at a dramatically reduced rate to lower
power consumption at times when the host computer is inactive or the battery system is not being used. All
safety circuitry remains fully functional in this mode.
Ship Mode: The bq78PL116 disables (opens) all the protection MOSFETs, and continues to monitor
temperature and voltage, but at a reduced measurement rate to dramatically lower power consumption.
Environmental data is saved in flash as a part of the historical record. Safety circuitry is disabled in this mode .
The device does not enter this power state as a part of normal operation; it is intended for use after factory
programming and test. Entry occurs only after a unique SMBus command is issued. Exit occurs when the
SMBus lines return to an active state.
Extreme Cell Undervoltage (ECUV) Shutdown Mode: In this mode, the bq78PL116 draws minimal current
and the charge and discharge protection MOSFETs are disabled (opened). The precharge MOSFET remains
enabled when a charge voltage is present. Safety circuitry is disabled in this mode . The device does not enter
this mode as a part of normal operation; it enters this state during extreme cell undervoltage conditions
(ECUV). The ECUV threshold is programmable between 2.5 V and 2.8 V for even series cell applications and
2.7 V to 2.8 V for odd series cell applications.
STATE
Active
Standby
Ship
Extreme cell
undervoltage
OVERCURRENT
PROTECTION
Fully active
Fully active
Not active
Not active (precharge
enabled)
ENTRY CONDITION
Normal operation as determined by firmware
No load current flowing for predetermined
time
Protected SMBus command
Enabled when Vcell < ECUV
EXIT CONDITION
Firmware directed to the following operating
modes
Load activity
SMBus becomes active
Vcell charge above ECUV recovery threshold
(2.9 V/cell typical)
? 2010 – 2011, Texas Instruments Incorporated
Product Folder Link(s): bq78PL116
13
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