參數(shù)資料
型號(hào)： TPS65820RSHTG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 電源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 7 X 7 MM, GREEN, PLASTIC, QFN-56
文件頁(yè)數(shù)： 2/98頁(yè)
文件大小： 2290K
代理商： TPS65820RSHTG4
ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
Over recommended operating conditions (typical values at TJ = 25°C), application circuit as in Figure 3 (unless otherwise
noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BATTERY RECHARGE DETECTION
VRCH
New charge cycle starts if V(BAT) < VO(BATREG) – VRCH, after
Recharge threshold voltage
80
100
130
mV
termination was detected
tDGL(RCH)
Deglitch time for recharge detection
RTMR = 50 k
22.5
ms
DPPM FUNCTION
VDPPM
DPPM regulation point range
V(DPPM) = RDPPM × KDPPMM x IO(DPPM)
2.6
4.4
V
IO(DPPM)
DPPM pin current source
AC or USB present
95
100
105
A
KDPPM
DPPM scaling factor
1.139
1.15
1.162
Status bit set indicating DPPM loop active after deglitch time,
tDGL(DPPM)
DPPM de-glitch time
500
s
RTMR = 50 k
PACK TEMPERATURE SENSING
VLTF
Low temperture threshold
Pack low temperature fault at V(TS) > VLTF
2.465
2.500
2.535
V
VHTF
High temperture threshold
Pack low temperature fault at V(TS) < VHTF
0.485
0.500
0.515
V
IO(TS)
Temperature sense current source
Thermistor bias current
18.8
20
21.2
A
Deglitch time for temperature fault
R(TMR) = 50 k
,
tDLG(TFAULT)
22.5
ms
detection
V(TS) > VLTF OR V(TS) < VHTF
CHARGE AND PRECHARGE SAFETY TIMER
Charge safety timer programmed
Safety timer range, thermal/DPPM loop not active,
tCHG
3
5
10
hours
value
tCHG = RTMR × KTMR
KTMR
Charge timer set factor
0.313
0.360
0.414
s/
Total elapsed time when DPPM or
fast charge on, tCHGADD is the maximum add-on time added to
tCHGADD
2 tCHG
hours
thermal loop are active
tCHG
Precharge safety timer programmed
Pre charge safety timer range, thermal/DPPM loop not active,
tPRECHG
18
30
60
min
value
tPRECHG = KPRE × RTMR × KTMR
KPRE
Precharge timer set factor
0.09
0.1
0.11
Total elapsed time when DPPM or
Precharge on, tPCHGADD is the maximum add-on time added to
2
×
tPCHGADD
hours
thermal loop are active
tPRECHG
RTMR
External timer resistor limits
30
100
k
Internal resistor connected from OUT to BAT after safety timer
RTMR(FLT)
Timer fault recovery pullup resistor
1
k
timeout
THERMAL REGULATION LOOP
Charge current decreasesd and timer extended when TJ >
TTHREG
Temperature regulation limit
115
135
°C
TTHREG
CHARGER THERMAL SHUTDOWN
TTHCHG
Charger thermal shutdown
Charger turned off when TJ> TTHCHG
150
°C
TTHCHGHYS
Charger thermal shutdown hysteresis
30
°C
10
Copyright 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65820
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