DSP Switcher™ MDx-G15z/MDx-G16/
MDx-G30z/MDx-G31 Series
Non Isolated, Step-Down Switching Regulator
Module with AnyVoltage™ Technology. Single
and Dual Output Voltage up to 3 Amps Peak.
Advance Spec if ic atio ns , Pat e nt Pen di ng
Doc. No. MV-S101948-00, Rev. C
August 26, 2004
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MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step -Down Switching Regulator Module with AnyVoltage ™ Technology.
Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV-S101948-00 Rev. C Copyright@ 2004 Marvell
Page 2 Document Classification: Proprietary Information August 26, 2004, Advance
Document Status
Advance
Information This document contains design specifications for initial product development. Specifications may change
without notice. Contact Marvell Field Application Engineers for more information.
Preliminary
Information This document contains preliminary data, and a revision of this document will be published at a later date.
Specifications may change without not ice. Contact Marvell Field Application Engineers for more information.
Final
Information This document contains specifications on a product that is in final release. Specifications may change without
notice. Contact Marvell Field Applicatio n Engineers for more information.
Revision Code: Rev. C
Advance Technical Publication: 1.1
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technol ogy.
Single and Dual Output Voltage up to 3 Amps Peak.
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Copyright@ 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 3
FEATURES/BENEFITS
•True "plug-n-play" solution
•No external components required - except a sin-
gle voltage programming resistor
•Tiny footprint, vertical and horizontal options
•Input voltage range: 3V to 5.5V
•Programmable output voltage: 0.72V to 3.63V
•2% output voltage tolerance
•1 MHz switching frequency
•95% efficiency—no heatsink required
•Ultra-fast transient respo nse
•Low output ripple and noise
•AnyVoltage™ Technology provides 64 output
selections and shortens design cycles
•Output voltage margining capability for easy sys-
tem testing and qual ification
•High reliability - lowest component count
•Works with any external capacitive load (low
ESR, high ESR)
•Built-in undervoltage lockout, thermal protection,
and current limit
•Control IC and passive kit components are avail-
able for high volume user
SIP Package
DIP Package
SMT Package
Doc. No. MV-S100649-00, Rev A Copyright@ 2004 Marvell
Page 4 Document Classification: Proprietary Information August 26, 2004, Advance
OVERVIEW
The MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Series1 is a high-perf ormance, non-isolated, DC-DC
converter module for point-of-load (POL) applications.
It functions as a synchronous step-down (buck)
switching regulator in a small form factor . The module
includes a proprietary Marvell® integrated regul ator
device. The switching frequency for the regulator is 1
MHz, and no external components are required
(except one voltage programming resistor , see Section
2.1 "Output Voltage - AnyVoltage™ Technology" on
page 10).
Ultra-high conversion efficiency (typically 95%) allows
for the use of the MDx-G15z/MDx-G16/MDx-G30z/
MDx-G31 Series without any heatsink. Additionally,
the MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
includes an innovative single resistor method2 to pro-
gram the output voltage. This voltage is defined by the
user with an external resistor.
The MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series
operates from an input voltage range of 3V to 5.5V,
making the device well suited for portable applications.
The output voltage range is 0.72V to 3.63V, supporting
future devices down to 65 nm geometries.
Other key features include an internal current limit, an
undervoltage lockout, a thermal shutdown, and an
ambient temperature range of -40°C to 85°C
APPLICATIONS
•Point-of-load power su pplies
•Networking/Datacom systems
•Portable computing
•Workstation and Servers
•DSP power supplies
•LAN/WAN
•Enterprise Networks
•Industrial Controls
1. The MDx-G15z/MDx-G16/MDx-G30z/MDx-G3 1 seri es
includes MDS-G15z, MDD-G15z, MDT-G15z, MDS-
G16, MDD-G16, MDT-G16, MDS-G30z, MDD-G30z
and MDT-G30z, MDS-G31, MDD-G31 and MDT-G31
2. Patent Pending
Copyright@ 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 5
DEVICE FEATURE DIFFERENCES
Table below summarizes the feature differences between MDx-G15z, MDx-G16, MDx-G30z, and MDx-G31.
PRODUCT SELECTOR TABLE
Features MDx-G15z MDx-G16 MDx-G30z MDx-G31
Output Current 1.5A 1.5A 3.0A 3.0A
Packages •8-Pin SIP
•7-Pin DIP
•7-Pin SMT
•7-Pin SIP
•6-Pin DIP
•6-Pin SMT
•8-Pin SIP
•7-Pin DIP
•7-Pin SMT
•7-Pin SIP
•6-Pin DIP
•6-Pin SMT
LDO LDO Voltage
Option No LDO LDO Voltage
Option No LDO
Part
Number Description LDO
Output
Voltage
Output
Current Package
MDS-G15B SIP Module: 1.5A Pk Switching Reg. with LDO 3.3V 1.5A 8-pin SIP
MDS-G15E SIP Module: 1.5A Pk Switching Reg. with LDO 2.5V 1.5A 8-pin SIP
MDD-G15B DIP Module: 1.5A Pk Switching Reg. with LDO 3.3V 1.5A 7-pin DIP
MDD-G15E DIP Module: 1.5A Pk Switching Reg. with LDO 2.5V 1.5A 7-pin DIP
MDT -G15B SMT Module: 1.5A Pk Swi tching Reg. with LDO 3.3V 1.5A 7-pin SMT
MDT -G15E SMT Module: 1.5A Pk Swi tching Reg. with LDO 2.5V 1.5A 7-pin SMT
MDS-G16 SIP Module: 1.5A Pk Switching Reg. -- 1.5A 7-pin SIP
MDD-G16 DIP Module: 1.5A Pk Switching Reg. -- 1.5A 6-pin DIP
MDT-G16 SMT Module: 1.5A Pk Switching Reg. -- 1.5A 6-pin SMT
MDS-G30B SIP Module: 3A Pk Switching Reg. with LDO 3.3V 3.0A 8-pin SIP
MDS-G30E SIP Module: 3A Pk Switching Reg. with LDO 2.5V 3.0A 8-pin SIP
MDD-G30B DIP Module: 3A Pk Switching Reg. with LDO 3.3V 3.0A 7-pin DIP
MDD-G30E DIP Module: 3A Pk Switching Reg. with LDO 2.5V 3.0A 7-pin DIP
MDT-G30B SMT Module: 3A Pk Switching Reg. with LDO 3.3V 3.0A 7-pin SMT
MDT-G30E SMT Module: 3A Pk Switching Reg. with LDO 2.5V 3.0A 7-pin SMT
MDS-G31 SIP Module: 3A Pk Switching Reg. -- 3.0A 7-pin SIP
MDD-G31 DIP Module: 3A Pk Switching Reg. -- 3.0A 6-pin DIP
MDT-G31 SMT Module: 3A Pk Switching Reg. -- 3.0A 6-pin SMT
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 6 Document Classification: Proprietary Information August 26, 2004, Advance
Table of Contents
SECTION 1. SIGNAL DESCRIPTION................................................................... 7
1.1 Pin Diagram for MDx-G15z & MDx-G30z ......................................................................7
1.2 Pin Diagram for MDx-G31..............................................................................................8
1.3 Pin Description...............................................................................................................9
SECTION 2. FUNCTIONAL DESCRIPTION......................................................... 10
2.1 Output Voltage - AnyVoltage™ Technology..............................................................10
2.2 Output Voltage Margining............................................................................................10
2.3 Undervoltage Lockout (UVLO)....................................................................................12
2.4 Thermal Shutdown.......................................................................................................12
SECTION 3. ELECTRICAL SPECIFICATIONS..................................................... 13
3.1 Absolute Maximum Ratings .......................... .... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... .......13
3.2 Recommended Operating Conditions........................................................................13
3.3 Electrical Characteristics.............................................................................................14
3.4 Startup Waveforms.......................................................................................................15
3.5 Load Transient Response Waveforms.......................................................................18
3.5.1 G30 Step-Down Regulator ............. ... ..................................................... ..........................18
3.5.2 LDO Regulator..................... .................................................. ... ... ................ ... ... .......... ..... 19
3.6 Switching Waveforms. ... ... .... ... ... ... .... ... ................... .................................... ................20
3.7 Efficiency.......................................................................................................................21
SECTION 4. MECHANICAL DRAWINGS............................................................ 23
4.1 Mechanical Dimensions for MDx-G15z & MDx-G30z.................................................23
4.2 Mechanical Dimensions for MDx-G16 & MDx-G31....................................................26
SECTION 5. ORDERING INFORMATION............................................................ 29
5.1 Ordering Part Numbers and Package Markings........................................................29
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 7
Signal Description
Pin Diagram for MDx-G15z & MDx-G30z
Section 1. Signal Description
1.1 P in Diagram for MDx-G15z & MDx-G30z
Figure 1: MDx-G15z & MDx-G30z Package - Component View
Figure 2: Connection Block Configuration Sample for MDx-G15z & MDx-G3 0z
LDO_OUT
PSET
GND
SHDN
GND
VSET
MDS-G15z
MDS-G30z
176543289
VIN
BUCK_OUT
1234
5
67
LDO
Out Buck
Out GND Vin
VsetPsetSHDN
MDD-G15z
MDD-G30z
MDT-G15z
MDT-G30z
MDS-G15z
MDS-G30z
VOUT
GND
VIN
SHDN
GND
3V-5.5V
VSET
PSET
Optional
Load
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 8 Document Classification: Proprietary Information August 26, 2004, Advance
1.2 Pin Diagram for MDx-G31
Figure 3: MDx-G16 & MDx-G31 Package - Component View
Figure 4: Connection Block Config uration Sample for MDx-G16 & MDx-G31
VOUT VIN
GND
VSET
PSET
SHDN
MDD-G16
MDT-G16
MDD-G31
MDT-G31
123
654
VOUT
GND
VIN
SHDN
GND
VSET
PSET
MDS-G16
MDS-G31
17654328
MDS-G16
MDS-G31
VOUT
GND
VIN
SHDN
GND
3V-5.5V
VSET
PSET
Optional
Load
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 9
Signal Description
Pin Description
1.3 Pin Description
Name Pin Description
LDO_OUT1
1. This pin is present in MDx-G15z & MDx-G30z only.
Secondary Output Voltage. Connect directly to load with a short wide PCB trace.
PSET Percent Set.
An external resistor is connected to the ground to trim the set voltage by the percentage
value. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltage™ Technology" on
page 10 for resistor values and percentage options.
The total capacitance across this pin and GND should be less than 15 pF. Shorting this
pin to ground, floating this pin, or using RVSET > 619K or RVSET < 7.68K does not affect
the set voltage. A resistor with tolerance better than 2% must be used. If this pin is not
used, it should be tied to GND.
GND Power ground.
Connect these two pins to a suitable low-impeda nce ground plane.
NC Not connected.
No pin.
VSET Voltage set.
An external resistor is connected to ground to set the output voltage of th e s witching reg-
ulator. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltage™ Technology" on
page 10 for resistor values and output voltage options.
The total capacitance across this pin and GND should be less than 15 pF. Shorting this
pin to ground, floating this pin, or using RVSET > 619K or RVSET < 7 .68K disab l es th e
switching regulator. A resistor with tolerance better than 2% must be used.
BUCK_OUT2
2. This pin is present in MDx-G15z, & MDx-G30z only.
Primary Output Voltage. Connect directly to load with a short wide PCB t race.
VOUT3
3. This pin is present in MDx-G16, & MDx-G31 only.
Output voltage.
Connect directly to load with a low impedance PCB trace.
VIN 3V - 5.5V Input voltage.
SHDN Shutdown.
Logic low (≤ 0.8V) enables the regulator. Logic high (≥ 2.0V) disables the regulator. The
high signal has to be at least 20 µs to disable the regulator.
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 10 Document Classification: Proprietary Information August 26, 2004, Advance
Section 2. Functional Description
2.1 Output Voltage - AnyVoltage™ Technology
The output voltage of the MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series is programmed by using the look-up
Table 1 to select the resistor value for the VSET and PSET pins. The VSET pin sets the output voltage, and the
PSET pin trims the set voltage to a percentage value.
For example, to program 2.25V output, a 165K resistor is selected for the VSET pin, and an 11K resistor is
selected for the PSET pin. The 165K resistor sets the output voltage to 2.5V and the 11K resistor trims the set volt-
age off by 10% (or -10%). Using a resistor value greater than 619K or less than 7.68K for the VSET pin disables
the switching regulator and sets the SW pin to high impedan ce. Using a resistor value greater than 619K or less
than 7.68K for the PSET pin does not affect the set voltage. If not used, the PSET pin should be tied to ground.
2.2 Output Voltage Margining
A useful application of the Marvell® AnyVoltage™ technology is “output voltage margining”. Voltage margining is
commonly used during system qualification to evaluate operation at “corner” conditions of voltage, temperature
etc. T ypically, output voltage will be offset up and down by some percentage (margin) of the nominal value. For the
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series the VSET pin/resistor controls the nominal voltage of the
switching regulator output while the PSET pin/resistor controls the margin volt age. As can be seen in Table 1, the
PSET pin allows the margin to be set as high as 10% above and as low as -10% below the nominal setpoint estab-
Table 1: AnyVoltage™ Programming Table
PSET
-10.0% –7.5% –5.0% –2.5% 2.5% 5.0% 7.5% 10.0%
11k 18.7k 31.6k 53.6k Open
/GND 97.6k 165k 280k 475k
VSET
GND 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
11k 0.720 0.740 0.760 0.780 0.800 0.820 0.840 0.860 0.880
18.7k 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100
31.6k 1.080 1.110 1.140 1.170 1.200 1.230 1.260 1.290 1.320
53.6k 1.350 1.388 1.425 1.463 1.500 1.538 1.575 1.613 1.650
97.6k 1.620 1.665 1.710 1.755 1.800 1.845 1.890 1.935 1.980
165k 2.250 2.313 2.375 2.438 2.500 2.563 2.625 2.688 2.750
280k 2.700 2.775 2.850 2.925 3.000 3.075 3.150 3.225 3.300
475k 2.970 3.053 3.135 3.218 3.300 3.383 3.465 3.548 3.630
Open 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 11
Functional Description
Output Voltage Margining
lished by VSET. Depending on the value of the PSET resistor intermediate points of ±7.5%, ±5% and ±2.5% can
also be accessed.
For example, if an application call s for a nominal output voltage of 1.5V then Table 1 prescribes a value of R1 for
the VSET resistor. This selection is shown in Figure 6 connected to the VSET pin. To offset the voltage above and
below the nominal value, the PSET pin can be used with resistor values again from Table 1. Additionally, switches
S1 and S2 can be alternately closed to select from the two resistors - R3 and R2 (offset values) for PSET. If more
offsets are required more switches and resistor s may be used. As shown in the figures below, if S1 is closed and
S2 opened a positive 5% offset would be added to the nominal 1.5V output yielding 1.575V. Conversely, if S1 is
opened and S2 closed the output would be offset to -5% from 1.5V, or 1.425V. Finally with both S1 and S2 opened
the output would return to the nominal 1.5V. Thus voltage margining can be simply and reliably implemented with
a minimum of components and design effort.
Figure 5: Output Voltage Margining for MDx-G15z & MDx-G30z
MDx-G15z
MDx-G30z
LDO_OUT
Load2
GND
VIN
SHDN
GND
3.0V-5.5V
VSET
PSET
Load1
BUCK_OUT
R1
R2
S1S2
R3
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 12 Document Classification: Proprietary Information August 26, 2004, Advance
Figure 6: Output Voltage Margining for MDx-G16 & MDx-G31
2.3 Undervoltage Lockout (UVLO)
The MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series incorporates undervoltage-lockout circuitry to disable the
step-down regulator when the input voltage is below 2.75V (typical). The step-down regulator is enabled when the
input voltage is above 2.85V (typical).
2.4 Thermal Shutdown
If the junction temperature of the Control IC on MDx-G15z/MDx-G16/MDx-G30z/MDx-G31 Series exceeds 150°C
(typical), the thermal shutdown circuitry disables the step-down regulator. The step-down regulator is enabled
when the junction temperature falls to 120°C (typical).
MDx-G16
MDx-G31
VOUT
Load
GND
VIN
SHDN
GND
3V-5.5V
VSET
PSET
R1
R2
S1S2
R3
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 13
Electrical Specifications
Absolute Maximum Ratings
Section 3. Electrical Specifications
3.1 Absolute Maximum Ratings
Stresses above those listed in Absolute Maximum Ratings may cause permanent device failure. Functionality at or above those limits is not
implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.
Parameter Symbol Range Units
Input Voltage to GND VIN -0.3 to 6.0 V
Voltage Set to GND VSET -0.6 to (VIN + 0.3) V
Percentage Set Voltage to GND VPSET -0.6 to (VIN + 0.3) V
Shutdown Voltage to GND VSHDN -0.6 to (VIN + 0.3) V
Storage Temperature Range TSTOR -65 to +150 °C
Output Current (Peak) for MDx-G30z & MDx-G31 IOUT 3.0 A
Output Current (Peak) for MDx-G15z & MDx-G16 IOUT 1.5 A
LDO Current IOUTLDO 800 mA
3.2 Recommended Operating Conditions1
1. This device is not guaranteed to function outside the specified operating range.
Parameter Symbol Range Units
Input Voltage VIN 3 to 5.5 V
Operating Temperature Range2
2. This device is guaranteed to mee t the speci fica tions from 0°C to 70°C. Any specifications that per-
tains to the operating temperature range -40°C to +85°C are assured by design, characterization,
and correlation with statistical process controls.
TOP -40 to +85 °C
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 14 Document Classification: Proprietary Information August 26, 2004, Advance
3.3 Electrical Characteristics
The following applies unle ss othe rwise noted: VIN = 5.0V. TA = 25°C. Bold values indicate –40°C ≤ TA ≤ 85°C.
Parameter Symbol Condition Min Typ Max Units
Input Voltage Range VIN 3.0 5.5 V
Total Quiescent Current (No
Load) IIN 1.3 mA
Shutdown Supply Current IIN VSHDN = VIN = 5.5V 1 10 µA
Undervoltage Lockout VUVLO High threshold, VIN
increasing 2.85 3.00 V
Low threshold, VIN
decreasing 2.65 2.75 V
Shutdown Input Voltage
Logic VSHDN Enable regulator 0.8 V
Disable regulator 2.0 V
Shutdown Input Current ISHDN VSHDN = GND or 5.5V ±1 µA
Over-Temperature Thermal
Shutdown TOTS TJ increasing (disable
regulator) 150 °C
TJ decreasing (enab le
regulator) 120 °C
Switching
Frequency fSW 1MHz
Line Regulation IOUT = 2A 0.2 %
VIN = 3.0V to 5.5V
Load Regulation IOUT = 0.2A to 2.0A 0.5 %
Line Regulati on LDO IOUT = 800 mA
VIN = 4.0V to 5.5V 0.2 %
Load Regulation LDO IOUT = 10 mA to 800 mA 0.5 %
Input Current Ripple IIN ripple VOUT = 0.8V
IOUT = 2A
(without external filter)
15 mA
pk-pk
Input Voltage Ripple VIN ripple 50 mV
pk-pk
Output Voltage Accuracy ±2 %
Output Voltage Noise IOUT = 2.0A
VOUT = 1.8V 8.0 mV
RMS
Material Rating
Flammability Rating UL94V-0
Material Type FR4-PCB
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 15
Electrical Specifications
Startup Waveforms
3.4 Startup Waveforms
NOTE: There is a delay (3.5 ms typ) before the output voltage turns on. The actual threshold is before delay.
VLDO
VBUCK
VSHDN
Start-up Using the Shut down Pin
2V/DIV
500mV/DIV
2V/DIV
VLDO
VBUCK
VSHDN
Turn Off Using the Shutdown Pin
2V/DIV
500mV/DIV
2V/DIV
1 ms/DIV 1 ms/DIV
VIN = 5.0V tDLY ~ 3.5 ms VIN = 5.0V
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = No Load ILOAD = No Load
VLDO
VBUCK
VSHDN
Enable Threshold at VIN = 3.0V
2V/DIV
1V/DIV
1V/DIV
VLDO
VBUCK
VSHDN
Enable Threshold at VIN = 5.0V
2V/DIV
1V/DIV
1V/DIV
100 ms/DIV 100 ms/DIV
VIN = 5.0V VTH = 0.7V (Note) VIN = 5.0V VTH = 0.9V (Note)
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = 10 mA ILOAD = 10 mA
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MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 16 Document Classification: Proprietary Information August 26, 2004, Advance
VIN
VLDO
VBUCK
VIN Soft Start
5V/DIV
2V/DIV
1V/DIV
VIN
VLDO
VBUCK
VIN Hot Plug
5V/DIV
2V/DIV
1V/DIV
2 ms/DIV 1 ms/DIV
VIN = 5.0V VIN = 5.0V
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = No Load ILOAD = No Load
VOUT
IIND
G30 St ep-down Output Rise Time
500mV/DIV
1A/DIV IIND
G30 Soft Start Current Limit
1A/DIV
5 µs/DIV 50 µs/DIV
VIN = 5.0V VIN = 5.0V
VOUT= 1.2V VOUT = 3.3V
ILOAD = 500 mA
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Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 17
Electrical Specifications
Startup Waveforms
VIN
VLDO
VBUCK
UVLO Thresholds
2V/DIV
2V/DIV
2V/DIV
10 ms/DIV
VIN = 5.0V VHTH = 2.966V
VLDO = 3.3V VLTH = 2.767V
VBUCK = 1.2V
ILOAD = 10 mA
_
_
_
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 18 Document Classification: Proprietary Information August 26, 2004, Advance
3.5 Load Transient Response Waveforms
3.5.1 G30 Step-Down Regulator
VBUCK
ILOAD
Load Trans ien t Response
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Load Response
100mV/DIV
2A/DIV
20 µs/DIV 20 µs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A
VBUCK = 1.2V VBUCK = 1.2V
VBUCK
ILOAD
Load Trans ien t Response
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Load Response
100mV/DIV
2A/DIV
20 µs/DIV 20 µs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A
VBUCK = 1.2V tRISE ~ 6A/µSV
BUCK = 1.2V tRISE ~ 6A/µS
Additional COUT = 22 µFt
FALL ~ 129A/µS Additional COUT = 22 µFt
FALL ~ 129A/µS
2
5
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Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 19
Electrical Specifications
Load Transient Response Waveforms
3.5.2 LDO Regulator
VBUCK
ILOAD
Load Transient Response
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Lo ad Response
100mV/DIV
2A/DIV
20 µs/DIV 20 µs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A
VBUCK = 1.2V VBUCK = 1.2V
Additional COUT = 2X22 µF Additional COUT = 2X22 µF
VBUCK
ILOAD
Load Transient Response
50mV/DIV
1A/DIV
20 µs/DIV
VIN = 5.0V ILOAD = 0.2A to 0.8A
VLDO = 3.3V
2
5
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_
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 20 Document Classification: Proprietary Information August 26, 2004, Advance
3.6 Switching Waveforms
NOTE: For repeatability of measuring output ripple (VOUT(P-P)), the test procedure is to set the scope bandwidth to
20MHz and uses a coax cable with very short leads terminated into 50Ω. The coax leads must be routed away
from the switching node as much as possible.
VSW
IIND
VBUCK
VIN
Switching Waveforms - CCM mode
5V/DIV
0.5A/DIV
5mV/DIV
100mV/DIV
VSW
VBUCK
IIND
Switching Waveforms - DCM mode
5V/DIV
20mV/DIV
500mA/DIV
500 ns/DIV 5 µs/DIV
VIN = 5.0V VIN(P-P) = 200.2 mV VIN = 5.0V IIND(PK) = 670.4 mA
VBUCK = 1.2V IIND(P-P) = 601.5 mA VBUCK = 1.2V Freq = 185 kHz
IOUT = 2A IIND(PK) = 2.3A IOUT = 50 mA
VOUT(P-P) = 6.3 mV (Note) Freq = 1 MHz VOUT(P-P) = 31.4 mV (20 MHz BW)
VBUCK
Output Ripple Voltage
20mV/DIV
VSW
VBUCK
IIND
Ringing Frequency
5V/DIV
20mV/DIV
500mA/DIV
2 ms/DIV 1 ms/DIV
VIN = 5.0V VIN = 5.0V
VBUCK = 1.2V VBUCK = 1.2V
IOUT = 2A IOUT = 50 mA
VOUT(P-P) = 15.7 mV (Note) Ringing Freq = 10 MHz
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Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 21
Electrical Specifications
Efficiency
3.7 Efficiency
G30 EFFICIENCY VS. OUTPUT CURRENT
VIN = 5.0V @ 25°C
G30 EFFICIENCY VS. OUTPUT CURRENT
VIN = 3.3V @ 25°C
50
60
70
80
90
100
00.511.52
Output Current (A)
Efficiency (%)
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.8V
50
60
70
80
90
100
00.511.52
Output Current (A)
Efficiency (%)
2.5V
1.8V
1.5V
1.2V
1.0V
0.8V
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 22 Document Classification: Proprietary Information August 26, 2004, Advance
THIS PAGE LEFT INTENTIONALLY BLANK
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 23
Mechanical Drawings
Mechanical Dimensions for MDx-G15z & MDx-G30z
Section 4. Mechanical Drawings
4.1 M echanical Dimensions for MDx-G15z & MDx-G30z
Figure 7: MDS-G15z & MDS-G30z Series Mechanical Dimensions
24.76mm
16.5mm Max
3.5mm
Max
3.81mm
2.54mm
5.08mm
2.00mm
PCB thru-hole
Pin
cross
section
0.635
mm
0.635
mm
1.200 mm
(recommended)
PCB thru-hole
recommended dimensions
(expanded top view)
1.27mm
Tollerance: .XX= +/-0.25
.XXX=+/-0.05
+/- 10 Degree
Max
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 24 Document Classification: Proprietary Information August 26, 2004, Advance
Figure 8: MDD-G15z & MDS-G30z Series Mechanical Dimensions
SIDE VIEWCOMPO NENT VIEW
1234
5
6
7
0.180(4.57)
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 25
Mechanical Drawings
Mechanical Dimensions for MDx-G15z & MDx-G30z
Figure 9: MDT-G15z & MDS-G30z Series Mechanical Dimens ions
COMPONENT
VIEW SIDE VI EW
6
3
2
1
7
4
5
0.216 (5.50)
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 26 Document Classification: Proprietary Information August 26, 2004, Advance
4.2 M echanical Dimensions for MDx-G16 & MDx-G31
Figure 10: MDS-G16 & MDS-G31 Series Mechanical Dimensions
20.32mm
12mm Max
3.5mm
Max
3.81mm
2.54mm 5.08mm
2.00mm
PCB thru -hole
Pin
cross
section
0.635
mm
0.635
mm
1.200 mm
(recommended)
PCB thru-hole
recommended dimensions
(expanded top view)
1.27mm
+/- 10 Degree
Max
Tollerance: .XX= +/-0.25
.XXX=+/-0.05
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 27
Mechanical Drawings
Mechanical Dimensions for MDx-G16 & MDx-G31
Figure 11: MDD-G16 & MDS-G31 Series Mechanical Dimension s
123
456
SIDE VIEWCOMPONENT VIEW
PIN 1 SHDN PIN 4 VIN
PIN 2 PSET PIN 5 GND
PIN 3 VSET PIN 6 VOUT
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 28 Document Classification: Proprietary Information August 26, 2004, Advance
Figure 12: MDT-G16 & MDS-G31 Series Mechanical Dimensions
COMPONENT VIEW
23
45
1
6
SIDE VIEW
PIN 1 SHDN PIN 4 VIN
PIN 2 PSET PIN 5 GND
PIN 3 VSET PIN 6 VOUT
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 29
Ordering Information
Ordering Part Numbers and Package Markings
Section 5. Ordering Information
5.1 Ordering Part Numbers and Package Markings
Figure 13 shows the ordering p a rt numbering schem e fo r the MDS-G31 part. Markings for the other variants are
similar. For complete ordering information, contact your Marvell® F AE or sales representative.
Figure 13: MDx-G15z & MDx-G30z Sample Ordering Part Number
Figure 14: MDx-G16 & MDx-G31 Sample Ordering Part Number
MDxG15z - XX
Module
Part Number
S - SIP, D-DIP, T-SMT
Package code
Board Revision
e.g., A0 = 1st Revision
Voltage Option LDO
B = 3.3V, E = 2.5V
G15
G30
MDxG16 - XX
Module
Part Number
Board Revision
e.g., A0 = 1st Revision
S - SIP, D -DIP, T- SMT
Package code G16
G31
MDx-G15z/MDx-G16/MDx-G30z/MDx-G31
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage up to 3 Amps Peak.
Doc. No. MV -S101948-00, Rev. C Copyright © 2004 Marvell
Page 30 Document Classification: Proprietary Information August 26, 2004, Advance
The standard ordering part number for the respective solutions are shown in Table 2.
Table 2: Ordering Par t Numbers
Part Number Marking Switcher
Output
Voltage
LDO
Output
Voltage
Output
Current Ambient
Temperature
Range1
1. The device is guaranteed to meet specifications from 0°C to 70°C. Any specifications that pertains to
the operating temperature range -40°C to 85°C are assured by design, characterization, and correla-
tion with statistical process controls.
Package
MDS-G15B-YY2
2. YY is the revision number of the part.
B0 Programmable 3.3V 1.5A -40°C to 85°C8-pin SIP
MDS-G15E-YY2 E0 Programmable 2.5V 1.5A -40°C to 85°C8-pin SIP
MDD-G15B-YY2 B0 Programmable 3.3V 1.5A -40°C to 85°C7-pin DIP
MDD-G15E-YY2 E0 Programmable 2.5V 1.5A -40°C to 85°C7-pin DIP
MDT-G15B-YY2 B0 Programmable 3.3V 1.5A -40°C to 85°C7-pin SMT
MDT-G15E-YY2 E0 Programmable 2.5V 1.5A -40°C to 85°C7-pin SMT
MDS-G16-YY2 -- Programmable -- 1.5A -40°C to 85°C7-pin SIP
MDD-G16-YY2 -- Programmable -- 1.5A -40°C to 85°C6-pin DIP
MDT-G16-YY2 -- Programmable -- 1.5A -40°C to 85°C6-pin SMT
MDS-G30B-YY2 B0 Programmable 3.3V 3.0A -40°C to 85°C8-pin SIP
MDS-G30E-YY2 E0 Programmable 2.5V 3.0A -40°C to 85°C8-pin SIP
MDD-G30B-YY2 B0 Programmable 3.3V 3.0A -40°C to 85°C7-pin DIP
MDD-G30E-YY2 E0 Programmable 2.5V 3.0A -40°C to 85°C7-pin DIP
MDT-G30B-YY2 B0 Programmable 3.3V 3.0A -40°C to 85°C7-pin SMT
MDT-G30E-YY2 E0 Programmable 2.5V 3.0A -40°C to 85°C7-pin SMT
MDS-G31-YY2 -- Programmable -- 3.0A -40°C to 85°C7-pin SIP
MDD-G31-YY2 -- Programmable -- 3.0A -40°C to 85°C6-pin DIP
MDT-G31-YY2 -- Programmable -- 3.0A -40°C to 85°C6-pin SMT
Copyright © 2004 Marvell Doc. No. MV-S101948-00, Rev. C
August 26, 2004, Advance Document Classification: Proprietary Information Page 31
Ordering Information
Ordering Part Numbers and Package Markings
Figure 15 shows a typical package marking for the MDx-G15z part. Markings for the other variant is similar.
Figure 15: MDx-G15z package marking and Pin 1 location
Figure 16 shows a typical package marking for the MDx-G15z part. Markings for the other variant is similar.
Figure 16: MDx-G16 package marking and Pin 1 locat ion
Logo
Pin 1
G15z Part Number
B0 A0
Y WW @
Work week
Last Di gi t of t he year
Assembl y P lant Code
Die RevisionLDO Output Voltage
Logo
Pin 1
G16 Part Number
A0
Y WW @
Work week
Last Digi t of the year
Assembly Plant Code
Die Revi sion
US and Worldwide Offices
Marvell Semiconductor, Inc.
700 First Avenue
Sunnyvale, CA 94089
Tel: 1.408.222.2500
Fax: 1.408.752.9028
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New Tech Park
Singapore 556741
Tel: 65.6756.1600
Fax: 65.6756.7600
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Tokyo 163-0650
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Fax: 81.(0).3.5324.0354
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Israel
Tel: 972.4.999.9555
Fax: 972.4.999.9574
Worldwide Sales Offices
Western US Sales Office
Marvell
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Sunnyvale, CA 94089
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Fax: 1.408.752.9028
Sales Fax: 1.408.752.9029
Central US Sales Office
Marvell
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Fax: 1.512.336.1552
Eastern US/Canada Sales Office
Marvell
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Tel: 978 250-0588
Fax: 978 250-0589
Europe Sales Office
Marvell
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United Kingdom
Tel: 44.(0).1442.211668
Fax: 44.(0).1442.211543
Israel Sales Office
Marvell
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Israel
Tel: 972.8.924.7555
Fax: 972.8.924.7554
China Sales Office
Marvell
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Tel: 86.21.6440.1350
Fax: 86.21.6440.0799
Japan Sales Office
Marvell
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Tokyo 163-0650
Tel: 81.(0).3.5324.0355
Fax: 81.(0).3.5324.0354
Taiwan Sales Office
Marvell
2Fl., No. 1, Alley 20, Lane 407
Ti-Ding Blvd., Nei Hu District
Taipei, Taiwan 114, R. O. C
Tel: (886-2).8177.7071
FAX: (886-2).8752.5707
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