參數(shù)資料
型號(hào)： TPS65166RHAR
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)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)： 24/45頁
文件大?。?/td> 3690K
代理商： TPS65166RHAR
Setting the Output Voltage and Selecting the Feed-Forward Capacitor (Positive Charge Pump)
out
FB4
R14
V
= V
1+
= 1.24 V
1+
R15
÷
÷
è
è
(35)
F B4
V
1.24V
R15 =
=
2.4 k
500
A
500
A
W
m
(36)
out
FB4
V
R14 = R15
1
= R 15
1
V
1.24 V
-
-
÷
÷
è
è
(37)
1
C17 =
2
12 kHz
R14
p
(38)
Base2
Control
Logic
FB4
Error Amplifier
CurrentLimit
&
Softstart
1.24 V
100 mV
Shortcircuit
Comparator
Shortcircuit
Mode
55 A
m
8 mA
PNP Transistor Selection (Positive Charge Pump)
ONE
D1
D2
Q
I
V
= 2
Vs + V
2
V
R
V
D
-
-
-
(39)
SLVS976 – SEPTEMBER 2009.......................................................................................................................................................................................... www.ti.com
To minimize noise a minimum current through the feedback divider of 500
A is recommended. At startup the
device is in short circuit mode with reduced current (typ. 50
A) until the feedback voltage FB4 exceeds 100 mV,
then the device switches to soft-start mode until the output voltage VONE is in regulation. Due to the high output
current and low required voltage drop, high current Schottky diodes with low forward voltage are recommended
for this regulator.
To minimize noise and leakage current sensitivity keep the lower feedback divider resistor R15 between 100
and 4.7k
. See typical application section for charge pump circuit.
Across the upper feedback resistor R14, a bypass capacitor C17 is required. The capacitor is calculated as:
Figure 31. Positive Chargepump Block Diagram
The maximum possible VONE output voltage is calculated as:
With:
Vs = boost converter output voltage
VD1 = Forward voltage of boost converter Schottky diode
VD2 = Forward voltage of charge pump diode for a current of IONE / D
IONE = VONE output current
D = Duty cycle of boost converter (D = 1 – Vin / Vs)
R = Series resistor (if applicable, e.g., 2
for typical application)
VQ = Transistor saturation voltage
As a general recommendation the VONE voltage level in use should be at least 0.5V lower than the calculated
maximum VONE voltage.
30
Copyright 2009, Texas Instruments Incorporated
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(píng)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(dòng)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(shí)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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