參數(shù)資料
型號(hào)： MP1591DS
廠商： MONOLITHIC POWER SYSTEMS INC
元件分類： 穩(wěn)壓器
英文描述： 2A, 32V, 330KHz Step-Down Converter
中文描述： 4.9 A SWITCHING REGULATOR, 380 kHz SWITCHING FREQ-MAX, PDSO8
封裝： MS-012AA, SOIC-8
文件頁(yè)數(shù)： 4/11頁(yè)
文件大小： 261K
代理商： MP1591DS
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER
MP1591 Rev. 2.3
9/27/2006
www.MonolithicPower.com
4
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
OPERATION
The MP1591 is a current mode step-down
regulator. It regulates input voltages from 6.5V
to 32V down to an output voltage as low as
1.230V and is able to supply up to 2A of load
current.
The MP1591 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.
current
of
the
The voltage at COMP is compared to the switch
current measured internally to control the output
voltage. 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 while SW is
low. An internal 10
switch from SW to GND is
used to insure that SW is pulled to GND when
the switch is off to fully charge the BS capacitor
LOCKOUT
COMPARATOR
ERROR
AMPLIFIER
FREQUENCY
FOLDBACK
COMPARATOR
INTERNAL
REGULATORS
1.8V
SLOPE
COMP
CLK
CURRENT
COMPARATOR
CURRENT
SENSE
AMPLIFIER
SHUTDOWN
COMPARATOR
COMP
IN
2
EN
7
5
6
GND
4
OSCILLATOR
THERMAL
PROTECTION
35/330KHz
S
R
Q
SW
BS
M1
M2
1
+
REF
5V
8
Q
1.2V
+
+
2.60V/
2.35V
+
1.230V
0.7V
+
+
FB
--
--
--
--
--
--
3
Figure 1—Functional Block Diagram
相關(guān)PDF資料
PDF描述
MP1593 3A, 28V, 385KHz Step-Down Converter
MP1593_06 3A, 28V, 385KHz Step-Down Converter
MP1593DN 3A, 28V, 385KHz Step-Down Converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MP1591DS-LF 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 2A 32V 330kHz 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(kāi)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
MP1591DS-LF-Z 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 2A 32V 330kHz 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(kāi)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
MP1593 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 28V, 385KHz Step-Down Converter
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
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