ADP5062CP-EVALZ Analog Devices, ADP5062CP-EVALZ Datasheet - Page 21
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ADP5062CP-EVALZ
Manufacturer Part Number
ADP5062CP-EVALZ
Description
Power Management IC Development Tools ADP5062 Evaluation board
Manufacturer
Analog Devices
Type
Linear Regulators - Standardr
Series
ADP5062r
Datasheet
1.ADP5062CP-EVALZ.pdf
(44 pages)
Specifications of ADP5062CP-EVALZ
Rohs
yes
Product
Evaluation Boards
Tool Is For Evaluation Of
ADP5062
Input Voltage
4 V to 6.7 V
Description/function
Battery charger (isolated flyback)
Interface Type
I2C
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Output Current
2.1 A
Factory Pack Quantity
1
For Use With
ADP5062
Data Sheet
THERMAL MANAGEMENT
Isothermal Charging
The
charge current when the die temperature exceeds T
115°C). As the on-chip power dissipation and die temperature
increase, the charge current is automatically reduced to maintain
the die temperature within the recommended range. As the die
temperature decreases due to lower on-chip power dissipation
or ambient temperature, the charge current returns to the pro-
grammed level. During isothermal charging, the THERM_LIM
I
This thermal feedback control loop allows the user to set the
programmed charge current based on typical rather than worst
case conditions.
The
ISO_Sx load current in LDO mode. If the power dissipated on
chip during LDO mode causes the die temperature to exceed
130°C, an interrupt is generated. If the die temperature continues
to rise beyond 140°C, the device enters thermal shutdown.
Thermal Shutdown and Thermal Early Warning
The
detector. If the die temperature exceeds T
is disabled, and the TSD 140°C bit is set. The
can be reenabled when the die temperature drops below the T
falling limit and the TSD 140°C bit is reset. To reset the TSD
140°C bit, write to the I
(Bit 0) or cycle the power.
Before the die temperature reaches T
set if T
power consumption before thermal shutdown occurs.
Fault Recovery
Before performing the following operation, it is important to
ensure that the cause of the fault has been rectified.
To recover from a charger fault (when CHARGER_STATUS[2:0] =
110), cycle power on VINx or write high to reset the I
in the fault register (Register Address 0x0D).
2
C flag is set to high.
ADP5062
ADP5062
ADP5062
SDL
is exceeded. This allows the system to accommodate
includes a thermal feedback loop that limits the
does not include a thermal feedback loop to limit
charger features a thermal shutdown threshold
2
C fault register, Register Address 0x0D
SD
, the early warning bit is
SD
, the
ADP5062
ADP5062
2
LIM
C fault bits
(typically
charger
charger
Rev. 0 | Page 21 of 44
SD
BATTERY ISOLATION FET
The
FET for power path control. The battery isolation FET isolates a
deeply discharged Li-Ion cell from the system power supply in
both trickle and fast charge modes, thereby allowing the system
to be powered at all times.
When VINx is below V
full conducting mode.
The battery isolation FET is off during trickle charge mode.
When the battery voltage exceeds V
lation FET switches to the system voltage regulation mode.
During system voltage regulation mode, the battery isolation
FET maintains the V
the battery voltage exceeds V
in full conducting mode.
The battery isolation FET supplements the battery to support
high current functions on the system power supply. When the
voltage on ISO_Sx drops below V
enters into full conducting mode. When voltage on ISO_Sx
rises above V
full conduction mode, depending on the Li-Ion cell voltage and
the linear charger mode.
BATTERY DETECTION
Battery Voltage Level Detection
The
detect an absent battery. The charger actively sinks and sources
current into the ISO_Bx node, and voltage vs. time is detected.
The sink phase is used to detect a charged battery, whereas the
source phase is used to detect a discharged battery.
The sink phase (see Figure 30) sinks I
pins for a time period, t
t
starts the source phase. If the ISO_Bx pin exceeds the V
when the t
present and begins a new charge cycle.
The source phase sources I
a time period, t
timer expires, the charger assumes that no battery is present. If
the ISO_Bx pin does not exceed the V
timer expires, the charger assumes that a battery is present and
begins a new charge cycle.
BATOK
ADP5062
ADP5062
timer expires, the charger assumes no battery is present and
BATOK
ISO_Bx
charger features an integrated battery isolation
charger features a battery detection mechanism to
timer expires, the charger assumes the battery is
BATOK
, the isolation FET enters regulating mode or
. If If ISO_Bx exceeds V
ISO_SFC
VIN_OK_RISE
BATOK
voltage on the ISO_Sx pins. When
SOURCE
. If ISO_Bx is below V
ISO_SFC
, the battery isolation FET is in
current to the ISO_Bx pins for
ISO_Bx
, the battery isolation FET is
SINK
TRK_DEAD
BATH
, the battery isolation FET
current from the ISO_Bx
voltage when the t
BATH
, the battery iso-
before the t
BATL
ADP5062
BATL
when the
voltage
BATOK
BATOK