參數(shù)資料
型號： TPS65166RHAR
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC40
封裝： 6 X 6 MM, GREEN, PLASTIC, M0-220VJJD-2, QFN-40
文件頁數(shù)： 25/45頁
文件大?。?/td> 3690K
代理商： TPS65166RHAR
ONE
s
ONE
D2
ONE
I
Power dissipation = 2
V
2
V
R
I
D
-
-
÷
è
(40)
Resistor R12 Function and Power Dissipation (Positive Charge Pump)
2
resistor
ONE
P
= R12
I
(41)
Output Capacitor Selection (Positive Charge Pump)
www.ti.com.......................................................................................................................................................................................... SLVS976 – SEPTEMBER 2009
The power dissipation of the transistor should be calculated for the maximum applied boost output voltage VS. If
high voltage stress mode (HVS) is used the maximum VS voltage occurs during HVS mode.:
As an example for Vs = 18V and IONE = 150mA, the power dissipation is approximately 1W.
Because of the 1
F collector capacitor C16 a wide range of transistors can be used. The most important
transistor parameters are Collector-Emitter voltage which must be at least 2 x VS , average current rating of 1.2 x
IONE and DC current gain hFE, which must be at least IONE / IBase2. IBase2 minimum value of 8mA should be used
for calculation. See Table 13 for possible transistor selection.
Table 13. Transistor Selection (Positive Charge Pump)
TRANSISTOR
PZT2907A
KTA1552T
KTA1718D
KTA1666
R12 is used to limit the peak current flowing from collector capacitor C16 through R12, D3 and C15 into the
boost switching node. High peak currents disturb the boost converter switching which results in high VS and VONE
ripple. The power dissipation for the resistor R12 can be calculated by following formula:
For the best output voltage filtering, low ESR ceramic output capacitors are recommended. Two 4.7
F ceramic
output capacitors with sufficient voltage rating are adequate for most applications. Additional capacitors can be
added to improve the load transient regulation. See Table 14 for capacitor selection.
Table 14. Output Capacitor Selection (Positive Charge Pump)
CAPACITOR
COMPONENT SUPPLIER
4.7
F/50V
Murata, GRM31CR71H475KA12
4.7
F/50V
Taiyo Yuden, UMK316BJ475KL-T
Copyright 2009, Texas Instruments Incorporated
31
Product Folder Link(s): TPS65166
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65167ARHAR 功能描述:其他電源管理 Compact LCD Bias Sply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167ARHARG4 功能描述:其他電源管理 Compact LCD Bias Sply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167EVM-277 功能描述:電源管理IC開發(fā)工具 TPS65167 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS65167RHAR 功能描述:其他電源管理 Compact LCD Bias Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167RHARG4 功能描述:LCD 驅(qū)動器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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