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參數資料
型號: TPS51461RGET
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC24
封裝: 4 X 4 MM, GREEN, PLASTIC, QFN-24
文件頁數: 6/31頁
文件大小: 1627K
代理商: TPS51461RGET
+
V
SLEW
+
R
DROOP
+
PWM
Comparator
R
DS(on)
G
MV
= 1 mS
Driver
L
OUT
ESR
C
OUT
R
OUT
UDG-10188
R
LOAD
8 kW
+
+
G
MC
= 1 mS
VREF
UDG-10189
Droop
I
LOAD
V
OUT setpoint at 0 A
Maximum undershoot voltage =(5%–1%) x 1 = 4% x V
OUT
Lead insertion
Lead release
Non-
Droop
Maximum transient voltage
= (5%–1%) x 2 = 8% x V
OUT
V
OUT setpoint at 6 A
V
OUT setpoint at 0 A
Maximum overshoot voltage =(5%–1%) x 1 = 4% x V
OUT
SLUSAD9 – DECEMBER 2010
www.ti.com
Figure 7 shows the basic implementation of the droop mode using the TPS51461.
Figure 7. DROOP Mode Basic Implementation
The droop (voltage positioning) method was originally recommended to reduce the number of external output
capacitors required. The effective transient voltage range is increased because of the active voltage positioning
Figure 8. DROOP vs Non-DROOP in Transient Voltage Window
14
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS51461
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相關代理商/技術參數
參數描述
TPS51462 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V/5-V Input, D-CAPa?¢ Mode Synchronous Step-Down Integrated FETs Converter With 2-Bit VID
TPS51462RGER 功能描述:開關變換器、穩壓器與控制器 3.3V/5Vin,DCAP Mode Sync SD Integ FET RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS51462RGET 功能描述:開關變換器、穩壓器與控制器 3.3V/5Vin,DCAP Mode Sync SD Integ FET RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS51463 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V/5-V Input, D-CAP+? Mode Synchronous Step-Down Integrated FETs Converter
TPS51463RGER 功能描述:直流/直流開關轉換器 3.3V/5Vin,Sync SD Integr FET Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
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