Power
Management
DSP Switcher
™
Integrated DC-DC Regulators
MVPG15/MVPG16/MVPG30/MVPG31
PRODUCT OVERVIEW
The Marvell
¨
DSP Switcherª MVPG15/16/30/31 integrated DC-DC regulators are ultra-high performance,
digitally controlled, single and dual-output voltage regulators. These products include a synchronous step-down
(buck) switching regulator and an on-chip LDO regulator controller housed in tiny 3mm x 4mm DFN-12 packages.
The ultra-high efÞciency step-down regulators are based on innovative DSP-based architecture and fully integrated
with on-board power MOSFETs and internal frequency compensation. The internal compensation simpliÞes design,
reduces external component count and allows the use of low-ESR output capacitors.
The switching regulator features switching frequency of 1 MHz, allowing the use of low proÞle surface mount
inductors and low value capacitors. The output voltage range is programmable using a single resistor and ranges
from 0.72V to 3.63V. The Marvell proprietary Òsingle-resistorÓ programming scheme simpliÞes design and
improves system immunity to component tolerances and noise. The switching regulators are available in 1A
(MVPG15/16) and 2A (MVPG30/31) continuous output current versions. Undervoltage, short-circuit and thermal
protection are built-in.
The on-chip LDO regulator controller (MVPG15/30), with an external P-channel MOSFET forms a low dropout
regulator capable of driving 800mA output current. The output voltage of the LDO regulator is internally Þxed. LDO
voltage options are listed in the product selection table. Current limiting protection is adjustable for each application.
V
IN
+3.0V to +5.5V
C1
10uF
6.3V
9
6
VIN
VSET
SW
L1
2.0uH
C3
22uF
6.3V
R2
53.6K
DSP Switcherª
5
Integrated
DC-DC
Regulator
PSET
SFB
10
(MVPG31)
3
SHDN
8
SGND
1,2,4
V
OUT1
1.5V/2A
PGND
BP
Fig 1. DSP Switcherª Integrated DC-DC Regulator (MVPG31) Application Diagram
FEATURES
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Small 3mm x 4mm DFN-12 package
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Integrated power MOSFETs
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1 MHz switching frequency
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Digital Pulse Width Modulation (PWM) control
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Internal frequency compensation
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Over 95% efÞciency
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High peak switch current limit: 3.0A
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Input voltage range at 3.0V to 5.5V
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ÒSingle-resistorÓ programmable output voltage for the
step-down regulator
BENEFITS
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Minimizes board space with smallest footprint in the industry
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Integration reduces component count and board space, while
achieving superior performance
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Allows the use of small, low proÞle surface-mount inductors and
small capacitors
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Fast loop/load transient response. Adaptive algorithm for better
performance across operating range.
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SimpliÞes design, minimizes board space and reduces the amount of
external components
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Superior performance, longer battery life and less power dissipation
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Supports a variety of applications including modern mobile CPUs
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Makes the device well-suited for portable applications. Ideal for
single-cell Li-ion.
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Fewer external components, noise immunity and component
tolerance immunity
Patent Pending
ETC [ ETC ]
