Texas Instruments TPS65820 Evaluation Module TPS65820EVM TPS65820EVM Datenbogen
Produktcode
TPS65820EVM
ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)
V(OUT)
*
1.2
500 k
W
I
O(BAT)
+
K
(SET)
V
(SET)
R
SET
I
O(PRECHG)
+
V
(PRECHG)
K
(SET)
R
SET
I
(TERM)
+
V
(TERM)
K
(SET)
R
SET
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SLVS663B – MAY 2006 – REVISED APRIL 2008
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
POWER PATH TIMING CHARACTERISTICS, DPPM AND THERMAL LOOPS NOT ACTIVE, R
TMR
= 50 k
Ω
t
BOOT
Boot-up time
Measured from input power detection
120
200
300
ms
No USB: measured from V(AC) – V(BAT) < V
IN(NDT)
, USB
t
SW(ACBAT)
Switching from AC to BAT
50
µ
s
detected: CE = LO (after CE hold-off time)
No AC: measured from V(USB) – V(BAT) < V
IN(NDT)
, USB
t
SW(USBBAT)
Switching from USB to BAT
50
µ
s
detected: CE = LO (after CE hold-off time)
t
SW(PSEL)
Switching from USB to AC
50
µ
s
Toggling I
2
C PSEL bit
Switching from AC to USB or USB to
t
SW(ACUSB)
AC power removed or USB power removed
100
µ
s
AC
BATTERY REMOVAL DETECTION
V
NOBATID
Battery ID resistor detection
ID resistor not detected at V(OUT) – V(ANLG1) < V
NOBATID
0.5
V
Deglitch time for battery removal
t
DGL(NOBAT)
0.6
1.2
ms
detection
00, V
(OUT)
: 2.5 V to 4.4 V
Set via I
2
C bits (BATID1,
µ
A
01
10
BATID2) ADC_WAIT register
I
O(ANLG1)
ANLG1 pullup current
10
50
11
60
Total accuracy
25%
25%
FAST CHARGE CURRENT, V(OUT) > V(BAT) + 0.1 V, V(BAT) > V
LOWV
I
O(BAT)
Charge current range
100
1500
mA
11, 100% scaling
2.475
2.5
2.525
10, 75% scaling
1.875
1.9
1.925
V
SET
= V(ISET1),
V
SET
Battery charge current set voltage
V
(ISET1_1, ISET1_0) =
01, 50% scaling
1.225
1.25
1.275
00, 25% scaling
0.575
0.6
0.625
100 mA < I
O(BAT)
≤ 1 A
350
400
450
K
SET
Battery charge current set factor
1 mA < I
O(BAT)
≤ 100 mA
100
400
1000
PRECHARGE CURRENT, V(OUT) > V(BAT) + 0.1 V, V
BATSH
< V(BAT) < V
LOWV
, t < t
(PRECHG)
I
O(PRECHG)
Precharge current range
10
150
mA
V
PRECHG
Precharge set voltage
V
PRECHG
= V(ISET1)
220
250
270
mV
V
LOWV
Precharge to fast-charge transition
Fast charge at V(BAT) > V
LOWV
2.8
3
3.2
V
Deglitch time for fast charge to
t
DGL(PRE)
Decreasing battery voltage, R
TMR
= 50 k
Ω
22.5
ms
precharge transition
CHARGE REGULATION VOLTAGE, V(OUT) > V
O(BATREG)
+ 0.1V
4.2
V
Voltage options, selection via I
2
C
4.356
V
O(BATREG)
Battery charge voltage
Accuracy, T
A
= 25
°
C
–0.5%
0.5%
Total accuracy
–1%
1%
CHARGE TERMINATION, V(BAT) > V
RCH
, VOLTAGE REGULATION MODE SET
I
TERM
Charge termination current range
10
150
mA
11, 100% scaling
240
260
280
10, 75% scaling
145
160
175
Battery termination detection set
V
TERM
= V(ISET1),
V
TERM
mV
voltage
(ISET1_1, SET1_0) =
01, 50% scaling
90
110
130
00, 25% scaling
40
60
75
t
DGL(TERM)
Deglitch time for termination detection
V(ISET1) < V
TERM
, R
TMR
= 50 k
Ω
22.5
ms
Copyright © 2006–2008, Texas Instruments Incorporated
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