參數(shù)資料
型號: TPS65171RHAR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 4 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC40
封裝: 6 X 6 MM, GREEN, PLASTIC, MO-220VJJD-2, VQFN-40
文件頁數(shù): 11/46頁
文件大?。?/td> 3644K
代理商: TPS65171RHAR
2
inductor
SS
inductor
I
0.43
mA
0.43
t
mA
=
C
=
t
C
V
I
V
D
D
D
www.ti.com
SLVSA22A – OCTOBER 2009 – REVISED JANUARY 2010
Figure 24. Boost Converter Block Diagram
Soft-Start (Boost Converter)
To avoid high inrush current during start-up an internal soft-start is implemented. The soft-start time is set by an
external capacitor connected to the SS pin. The capacitor is charged with a constant current of typically 10mA,
which increases the voltage at the SS pin. The internal switch current limit is proportional to the SS pin voltage
and rises with rising voltage until VS is in regulation or the maximum current limit is reached. The larger the
soft-start capacitor value the longer the soft-start time. For a 100nF capacitor at the SS pin, the current limit is
reached after 0.9ms. An estimation of the current limit slope
ΔIinductor and CSS capacitor can be made by the
following formulas.
(5)
Copyright 2009–2010, Texas Instruments Incorporated
19
Product Folder Link(s): TPS65171
相關(guān)PDF資料
PDF描述
TPS65182BRGZT POWER SUPPLY SUPPORT CKT, PQCC48
TPS65182RGZT POWER SUPPLY SUPPORT CKT, PQCC48
TPS65182RGZR POWER SUPPLY SUPPORT CKT, PQCC48
TPS65185RSLT POWER SUPPLY SUPPORT CKT, PQCC48
TPS65200YFFR 1-CHANNEL POWER SUPPLY SUPPORT CKT, BGA36
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65175ARSHR 制造商:Texas Instruments 功能描述:LCD BIAS CHIP AND LEVEL SHIFTE 制造商:Texas Instruments 功能描述:IC BIAS PWR SUPP FOR LCD 56VQFN 制造商:Texas Instruments 功能描述:Fully Programmable LCD Bias IC
TPS65175CRSHR 功能描述:LCD TV/Monitor PMIC 56-VQFN (7x7) 制造商:texas instruments 系列:- 包裝:剪切帶(CT) 零件狀態(tài):有效 應(yīng)用:LCD 電視機(jī)/監(jiān)控器 電流 - 電源:- 電壓 - 電源:8.6 V ~ 14.7 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商器件封裝:56-VQFN(7x7) 標(biāo)準(zhǔn)包裝:1
TPS65175RSHR 功能描述:LCD 驅(qū)動器 Fully Programmable LCD Bias IC 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
TPS65176RHDR 功能描述:其他電源管理 LCD BIAS IC FOR TV 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
TPS65176RHDT 功能描述:其他電源管理 LCD BIAS IC FOR TV 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