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參數(shù)資料
| 型號： | MP1593 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 3A, 28V, 385KHz Step-Down Converter |
| 中文描述： | 第3A，28V的，385KHz降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 326K |
| 代理商： | MP1593 |
MP1593 – 3A, 28V, 385KHz STEP-DOWN CONVERTER
MP1593 Rev. 1.9
9/14/2006
www.MonolithicPower.com
5
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
OPERATION
LOCKOUT
COMPARATOR
ERROR
AMPLIFIER
FREQUENCY
FOLDBACK
COMPARATOR
INTERNAL
REGULATORS
1.8V
SLOPE
COMP
CLK
CURRENT
COMPARATOR
CURRENT
SENSE
AMPLIFIER
SHUTDOWN
COMPARATOR
SS
8
COMP
6
IN
2
EN
7
GND
4
OSCILLATOR
45/385KHz
S
R
Q
SW
3
BS
M1
M2
1
5V
+
Q
1.2V
+
+
2.60V/
2.39V
+
1.22V
0.7V
+
+
FB
5
--
--
--
--
--
--
Figure 1—Functional Block Diagram
The MP1593 is a current-mode step-down
regulator. It regulates input voltages from 4.75V to
28V down to an output voltage as low as 1.22V,
and is able to supply up to 3A of continuous load
current.
The MP1593 uses current-mode control to
regulate the output voltage. The output voltage
is measured at FB through a resistive voltage
divider and amplified through the internal error
amplifier.
The
output
transconductance error amplifier is presented at
COMP where a network compensates the
regulation control system. The voltage at COMP
is compared to the internally measured switch
current to control the output voltage.
current
of
the
The converter uses an internal N-Channel
MOSFET switch to step-down the input voltage
to the regulated output voltage. Since the
MOSFET requires a gate voltage greater than
the input voltage, a boost capacitor connected
between SW and BS drives the gate. The
capacitor is internally charged when SW is low.
An internal 10
switch from SW to GND is used
to insure that SW is pulled to GND when it is
low to fully charge the BS capacitor.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MP1593_06 | 3A, 28V, 385KHz Step-Down Converter |
| MP1593DN | 3A, 28V, 385KHz Step-Down Converter |
| MP2000_06 | Low Input Voltage 150mA Linear Regulator |
| MP2000DJ | Low Input Voltage 150mA Linear Regulator Evaluation Board |
| MP2000 | Low Input Voltage 150mA Linear Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP1593_06 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 28V, 385KHz Step-Down Converter |
| MP1593DN | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 28V, 385KHz Step-Down Converter |
| MP1593DN-LF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A 28V 385kHz Step-Down Converter 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 |
| MP1593DN-LF-Z | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A 28V 385kHz Step-Down Converter 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 |
| MP15A0.5 | 功能描述:變阻器 50watt .5ohm RoHS:否 制造商:Ohmite 類型:Wirewound 功率額定值:25 W 電阻:25 Ohms 電壓額定值:500 V 容差:10 % 端接類型:Solder Lug 轉(zhuǎn)數(shù):300 錐度:Linear |
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