Texas Instruments TPS65820 Evaluation Module TPS65820EVM TPS65820EVM データシート
製品コード
TPS65820EVM
ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)
SLVS663B – MAY 2006 – REVISED APRIL 2008
..............................................................................................................................................................
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Over recommended operating conditions (typical values at T
J
= 25
°
C), application circuit as in
(unless otherwise
noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BATTERY RECHARGE DETECTION
V
RCH
New charge cycle starts if V(BAT) < V
O(BATREG)
– V
RCH
, after
Recharge threshold voltage
80
100
130
mV
termination was detected
t
DGL(RCH)
Deglitch time for recharge detection
R
TMR
= 50 k
Ω
22.5
ms
DPPM FUNCTION
V
DPPM
DPPM regulation point range
V
(DPPM)
= R
DPPM
×
K
DPPMM
x I
O(DPPM)
2.6
4.4
V
I
O(DPPM)
DPPM pin current source
AC or USB present
95
100
105
µ
A
K
DPPM
DPPM scaling factor
1.139
1.15
1.162
Status bit set indicating DPPM loop active after deglitch time,
t
DGL(DPPM)
DPPM de-glitch time
500
µ
s
R
TMR
= 50 k
Ω
PACK TEMPERATURE SENSING
V
LTF
Low temperture threshold
Pack low temperature fault at V(TS) > V
LTF
2.465
2.500
2.535
V
V
HTF
High temperture threshold
Pack low temperature fault at V(TS) < V
HTF
0.485
0.500
0.515
V
I
O(TS)
Temperature sense current source
Thermistor bias current
18.8
20
21.2
µ
A
Deglitch time for temperature fault
R(TMR) = 50 k
Ω,
t
DLG(TFAULT)
22.5
ms
detection
V(TS) > V
LTF
OR V(TS) < V
HTF
CHARGE AND PRECHARGE SAFETY TIMER
Charge safety timer programmed
Safety timer range, thermal/DPPM loop not active,
t
CHG
3
5
10
hours
value
t
CHG
= R
TMR
×
K
TMR
K
TMR
Charge timer set factor
0.313
0.360
0.414
s/
Ω
Total elapsed time when DPPM or
fast charge on, t
CHGADD
is the maximum add-on time added to
t
CHGADD
2 t
CHG
hours
thermal loop are active
t
CHG
Precharge safety timer programmed
Pre charge safety timer range, thermal/DPPM loop not active,
t
PRECHG
18
30
60
min
value
t
PRECHG
= K
PRE
×
R
TMR
×
K
TMR
K
PRE
Precharge timer set factor
0.09
0.1
0.11
Total elapsed time when DPPM or
Precharge on, t
PCHGADD
is the maximum add-on time added to
2
×
t
PCHGADD
hours
thermal loop are active
t
PRECHG
t
PRECHG
R
TMR
External timer resistor limits
30
100
k
Ω
Internal resistor connected from OUT to BAT after safety timer
R
TMR(FLT)
Timer fault recovery pullup resistor
1
k
Ω
timeout
THERMAL REGULATION LOOP
Charge current decreasesd and timer extended when T
J
>
T
THREG
Temperature regulation limit
115
135
°
C
T
THREG
CHARGER THERMAL SHUTDOWN
T
THCHG
Charger thermal shutdown
Charger turned off when T
J
> T
THCHG
150
°
C
T
THCHGHYS
Charger thermal shutdown hysteresis
30
°
C
10
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