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參數(shù)資料
| 型號： | TPS51461RGET |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)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(shù)： | 7/31頁 |
| 文件大?。?/td> | 1627K |
| 代理商： | TPS51461RGET |
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0.84
0
1
2
3
4
5
6
Output Current (A)
Output
Voltage
(V)
VIN = 3.3 V
www.ti.com
SLUSAD9 – DECEMBER 2010
Consider an example of 0.8 V ±5%. If no droop is permitted, the allowable transient overshoot can be at a
maximum of +4%; the allowed transient undershoot can only be at minimum of –4% (given a dc tolerance of
±1%). Therefore, the overshoot and undershoot window is only ±32 mV. If the droop method is applied, this
overshoot and undershoot window could be potentially doubled from ±32 mV to ±64 mV, given the same load
step and release.
In applications where the DC and the AC tolerances are not separated, which means there is not a strict DC
tolerance requirement, the droop method can be used.
Table 3. Mode Parameter Table
COMPENSATION
SWITCHING
VID1 = 1
TECHNOLOGY
MODE
VREF (V)
FREQUENCY
VID0 = 0
CONNECTION
NON-
(fSW)
(V)
DROOP
1
GND
X
2.05
1 MHz
0.80
3
22 k
Ω
X
2.00
700 kHz
0.80
4
33 k
Ω
X
2.00
1 MHz
0.85
5
47 k
Ω
X
2.05
1 MHz
0.85
7
100 k
Ω
X
2.00
700 kHz
0.85
8
Open
X
2.00
1 MHz
0.80
Figure 10 shows the transient response of the TPS51461 using droop configuration and COUT = 4 × 22 F. The
applied step load is from 0 A to 2 A.
Figure 9. 0.8-V Load Regulation (VIN = 3.3 V)
Figure 10. Droop Configuration Transient
Response
Copyright 2010, Texas Instruments Incorporated
15
Product Folder Link(s): TPS51461
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| 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(guān)變換器、穩(wěn)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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS51462RGET | 功能描述:開關(guān)變換器、穩(wěn)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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)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(guān)轉(zhuǎn)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(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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