- 您現在的位置：買賣IC網 > PDF目錄69510 > TPS54162QPWPRQ1 (TEXAS INSTRUMENTS INC) 3 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PDSO20 PDF資料下載
參數資料
| 型號： | TPS54162QPWPRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | GREEN, PLASTIC, HTSSOP-20 |
| 文件頁數： | 5/41頁 |
| 文件大?。?/td> | 2414K |
| 代理商： | TPS54162QPWPRQ1 |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
L
f
2
V
D)
(1
I
sw
Reg
L_LPM
L_DISCONT
×
-
=
L
f
2
V
D)
(1
I
sw
Reg
L_LPM
L_DISCONT
×
-
=
Reg
DS(ON)
Load
V
~
R
I
VIN
<
-
Min
OFF
sw
Reg
t
f
1
VIN
V
1
-
>
÷
è
-
and
www.ti.com
SLVSA32C – OCTOBER 2009 – REVISED MAY 2010
1) Active Mode Continuous Conduction Mode (CCM)
In this mode of operation the switcher operates in continuous conduction mode, and the inductor current is
always non-zero if the total load current (internal and external) is greater than IL_DISCONT shown in Equation 3.
(3)
Where,
D = duty cycle
L = output inductor
VReg = output voltage
fsw = switching frequency
For VIN < 8.5 V, the device enables an internal ~100
Ω load. This, combined with the external load, can cause
the device to enter into CCM even under light external loading conditions (see Figure 14). This mode of
operation is shown in Figure 15 is also called the Normal mode of operation.
Figure 15. Active Mode CCM
Figure 16. Active Mode DCM
2) Active Mode Discontinuous Conduction Mode (DCM)
In this mode of operation the switcher operates in discontinuous conduction mode, and the inductor current
becomes zero if the total load current (internal and external) is less than IL_DISCONT shown in Equation 4.
(4)
The device enters in this mode of operation when LPM pin is set high (i.e disabled) and output loading is less
3) Pulse Skip Mode (PSM)
In this mode of operation the switcher operates in discontinuous conduction mode, and the inductor current
becomes zero. The device enters in this mode of operation in the following conditions:
At low input voltages when VReg starts losing regulation and the OFF time (tOFF) of the switching FET tends to
be close to or slightly less than the minimum OFF time (tOFF-Min). If OFF time is much smaller than tOFF-Min,
there is a risk that the part stops switching and regulation is lost until power is re-cycled with OFF time
greater than tOFF-Min. This mode of operation is shown in Figure 18. Comparing Figure 17 and Figure 18,
(5)
Copyright 2009–2010, Texas Instruments Incorporated
13
Product Folder Link(s): TPS54162-Q1
相關PDF資料 |
PDF描述 |
|---|---|
| TPS5420DR | 5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS5420D | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS54226PWP | DUAL SWITCHING CONTROLLER, PDSO20 |
| TPS54226RGTT | DUAL SWITCHING CONTROLLER, PQCC16 |
| TPS54232DR | SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS5420 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SWIFT Converter Product Portfolio |
| TPS54200DDCR | 功能描述:TPS54200DDCR 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
| TPS54200DDCT | 功能描述:IC REG BUCK 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 功能:降壓 輸出配置:正 拓撲:降壓 輸出類型:可調式 輸出數:1 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:28V 電壓 - 輸出（最小值/固定）:-0.1V 電壓 - 輸出（最大值）:28V 電流 - 輸出:1.5A 頻率 - 開關:600kHz 同步整流器:是 工作溫度:-40°C ~ 125°C （TJ） 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細型，TSOT-23-6 供應商器件封裝:TSOT-23-6 標準包裝:1 |
| TPS54200EVM-818 | 功能描述:EVALUATION MODULE 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
| TPS54201DDCR | 功能描述:TPS54201DDCR 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。