參數(shù)資料
型號(hào)： TPS65162RGZR
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC48
封裝： 7 X 7 MM, PLASTIC, VQFN-48
文件頁(yè)數(shù)： 19/36頁(yè)
文件大?。?/td> 1034K
代理商： TPS65162RGZR
Rectifier Diode Selection
IN
OUT
V
D =
(12)
A
8
.
2
)
V
1
(
I
)
D
1
(
I
IN
OUT
SW
avg
×
-
=
×
-
=
(13)
P
D + Iavg
V
F + Isw
(1 * D)
V
F with ISW = minimum switch current of the TPS65162 (2.8 A)
Output Capacitor Selection
SLVS771B – MAY 2007 – REVISED JUNE 2008 ............................................................................................................................................................... www.ti.com
To achieve high efficiency, a Schottky diode should be used. The reverse voltage rating should be higher than
the maximum output voltage of the step-down converter. The averaged rectified forward current for which the
Schottky diode should be rated is calculated as the off time of the step-down converter times the minimum switch
current of the TPS65162:
where Isw = minimum switch current of the TPS65162 (2.8 A)
Usually a Schottky diode with 2 A maximum average rectified forward current rating is sufficient for most of the
applications. Secondly the Schottky rectifier has to be able to dissipate the power. The dissipated power is the
average rectified forward current times the diode forward voltage.
Table 6. Rectifier Diode Selection (Step-Down Converter)
CURRENT RATING Iavg
Vr
Vforward
RθJA
SIZE
COMPONENT SUPPLIER
3 A
20 V
0.36 V at 3 A
46°C/W
SMC
MBRS320, International Rectifier
2 A
20 V
0.44 V at 2 A
75°C/W
SMB
SL22, Vishay Semiconductor
2 A
20 V
0.5 V at 2 A
75°C/W
SMB
SS22, Fairchild Semiconductor
The device is designed to work with ceramic output capacitors. Two 22-
F output capacitors are sufficient for
most of the applications. Larger output capacitance improves the load transient response.
Table 7. Output Capacitor Selection Step-Down Converter
CAPACITOR
COMPONENT SUPPLIER
COMMENT
22
F/6.3 V
Taiyo Yuden JMK212BJ226MG
26
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65162
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65162RGZRG4 功能描述:LCD 驅(qū)動(dòng)器 12V/2.8A(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
TPS65163RGZR 功能描述:其他電源管理 LCD Bias with Int 9Ch Level Shifter 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
TPS65163RGZT 功能描述:其他電源管理 LCD Bias with Int 9Ch Level Shifter 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
TPS65165EVM-233 功能描述:電源管理IC開(kāi)發(fā)工具 TPS65165 Evaluation Module 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
TPS65165RSBR 功能描述:LCD Gamma緩沖器 Compact LCD Bias IC RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube
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