參數(shù)資料
型號(hào)： TPS65810RTQT
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 電源管理
英文描述： 9-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 8 X 8 MM, GREEN, PLASTIC, QFN-56
文件頁(yè)數(shù)： 92/99頁(yè)
文件大小： 2128K
代理商： TPS65810RTQT
www.ti.com
INPUT CAPACITOR SELECTION, SM1, SM2 CONVERTERS
OUTPUT VOLTAGE SELECTION, SM1, SM2 CONVERTERS
R1 +
V
SMxOUT
V
FB
* 1 R2
(16)
DESIGN EXAMPLES
SM1, SM2 CONVERTER DESIGN EXAMPLE
Ltarget +
V
OUT
0.3
I
OUT_MAX
1 *
V
OUT
V
IN_MAX
fsw
+ 3.35 mH, 3.3 mH is a good target.
(17)
C +
1
L[2
p
fc]2
+ 10.5 mF 10 mF is a good target.
(18)
CHARGER DESIGN EXAMPLE
R
ISET +
K
SET
V
SET
I
PGM
+ 1 kW
(19)
R
DPPM +
V
DPPM_OUT
K
DPPM
I
DPPM
+ 3.74 kW
(20)
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
Buck converters have a pulsating input current that can generate high input voltage spikes at VIN. A low ESR
input capacitor is required to filter the input voltage, minimizing the interference with other circuits connected to
the same power supply rail. Each dc-dc converter requires a 10-
F ceramic input capacitor on its input pin.
Typically the output voltage is programmed by the I2C. An external divider can be added to raise the output
voltage, if the available I2C values do not meet the application requirements. Care must be taken with this special
option, because this external divider (gain factor) would apply to any selected I2C output voltage value for this
converter.
Equation 16 calculates R1, Let R2 = 20 k
:
where VFB is the I
2C selected voltage, is the desired output voltage and R1/R2 is the feedback divider.
Design Conditions and Parametrs for SM1 or SM2:
Vin_SM1/2: 4.6 V typical (may be less if input source is limited).
Vout_SM1/2: 1.24 V
Iout_max: 0.6 A
fsw = 1500 kHz
fc = 25 kHz
Design Conditions and Parameters for Charger:
Vout: 4.6 V; (OUT pin is input to charger)
Fast-charge current, IPGM: 1 A
DPPM-OUT threshold: 4.3 V; (charging current reduces when OUT falls to this level)
Safety timer: 5 h
Battery short-circuit delay, tDELAY: 47 s; (delays BAT short circuit during hot plug of battery)
TS temperature range: disabled
KSET = 400; VSET = 2.5 V; KDPPM = 1.15; IDPPM = 100 A; KTMR= 0.36 s/
Program Fast Charge Current Level:
Program DPPM_OUT Voltage Level (Level at Which Charging Current Reduces)
92
Copyright 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS65810 TPS65811
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TPS65811RTQR 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQRG4 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQT 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQTG4 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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