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MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
DESCRIPTION
The MPDTH series non-isolated DC/DC power modules are small in size but big on performance and flexibility. Their high output current, compact footprint and industry-leading features offer system designers versatile modules for powering complex multi-processor digital systems. Standard inputs are 3.3V., 5V. or 12 Volts DC nominal. Two mounting styles are offered, either a pinned through-hole model with slightly lower height or a surface mount model, both with identical length and width. Respective models all share the same pinout and comply with the POLA DC/DC converter standard. The output voltage is adjustable in three ranges from 0.8 V. to 5.5 V and can be set with a single external resistor. The series also includes Auto-Track sequencing, enabling modules to track each other's output voltage in multipowered systems during power-up and power-down. Other operating features include a remote on/off control and the ability to start up into an existing (prebias) output voltage. Extensive self-protection features include input under-voltage lockout (UV), output short circuit protection and output overcurrent shutdown (OC) using an automatic restart. All models meet RoHS6 hazardous substance compliance.
Typical units
FEATURES
Compatible to Point-of-Load Alliance (POLA) Specifications Surface-mount or through-hole small footprint package Three user-selectable output voltage ranges covering 0.8V to 5.5V Outline dimensions less than one square inch 3.3V, 5V and 12 Vdc nominal inputs High efficiency up to 95% typical Tracking input for sequenced startup/shutdown Outstanding thermal performance and derating -40 to +85 degrees Celsius operating range Extensive self-protection, voltage limits and short circuit features On/Off control, trim and pre-bias start-up functions
Track Input
F1
+Vin 3 2 6
+Vout
C1: 100F External DC Power Source
C2: 10F ceramic
Inhibit On/Off
MPDTH_50 Series
4 1
VoAdj (Trim) 5 C3: 10F
Open = On Closed = Off D1
Ground
Figure 1. Connection Diagram
Notes: 1. Murata Power Solutions strongly recommends an external fuse, F1. Fuse rating = 2 x Iin max. 2. Consider using diode D1 to blow the fuse in case of reversed polarity. 3. C1: 100F/25V, aluminum electrolytic capacitor, required for all models. C2: 10F/25V, ceramic capacitor, required for MPDTH12050 models. C3: 10F ceramic, recommended for all models. Voltage rating 2 x Vout. 4. Track input is referred to ground. 5. See trim information for RSet.
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MPDTH_50 Series.A08 Page 1 of 6
MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
SPECIFICATION SUMMARY AND ORDERING GUIDE c
Vout (Volts)
0.8-2.5 0.8-2.5 0.8-3.6 0.8-3.6 1.2-5.5 1.2-5.5
Model Number
MPDTH03050WAH MPDTH03050WAS MPDTH05050WAH MPDTH05050WAS MPDTH12050WAH MPDTH12050WAS
Output Iout (Amps, Power max.) (Watts)
6 6 6 6 6 6 15 15 21.6 21.6 33 33
Ripple&Noise (mV pk-pk)
20(6) 20(6) 20(7) 20(7) 33(8) 33(8)
Regulation Line Load
1.25% 1.25% 1.25% 1.25% 0.4% 0.4% 1.5% 1.5% 1.5% 1.5% 0.4% 0.4%
Input Vin nom. Range (Volts) (Volts)
3.3 3.3 5.0 5.0 12.0 12.0
g h i j k
Efficiency (%)
94(3) 94(3) 95(4) 95(4) 93(5) 93(5)
Case(inches)
0.87x0.495x0.335 0.87x0.495x0.358 0.87x0.495x0.335 0.87x0.495x0.358 0.87x0.495x0.335 0.87x0.495x0.358
Package Case(mm)
22.10x12.57x8.5 22.10x12.57x9.09 22.10x12.57x8.5 22.10x12.57x9.09 22.10x12.57x8.5 22.10x12.57x9.09
Type(2)
TH SM TH SM TH SM
2.95-3.65 2.95-3.65 4.5-5.5 4.5-5.5 10.8-13.2 10.8-13.2
Notes: c All specifications are typical at nominal input line voltage, nominal output voltage and full load, Ta=+25 deg.C. unless otherwise noted. See detailed specifications. d "TH" is a pinned through-hole package. "SM" is a surface mount package. e Vin=3.3V, Vout=2.5V, Iout=4A f Vin=5V, Vout=3.3V, Iout=4A
Vin=12V, Vout=5V, Iout=5A Vin=3.3V, Vout=2.5V, Iout=6A Vin=5V, Vout=3.3V, Iout=6A Vin=12V, Vout=5V, Iout=6A RoHS6 compliance does not claim EU RoHS exemption 7b (lead in solder).
MPDTH**050 Series Performance and Functional Specifications
All specifications are typical unless noted.
Input
Input Voltage Range Start-Up Voltage See Ordering Guide 2.45 Volts (MPDTH03050) 4.3 Volts (MPDTH05050) 9.5 Volts (MPDTH12050) 2.4 Volts (MPDTH03050) 3.7 Volts (MPDTH05050) 9.0 Volts (MPDTH12050) 100 F, required (MPDTH03050 and MPDTH05050) 100 F + 10 F required (MPDTH12050) OFF = -0.2V to +0.6 V max. or ground pin ON = open pin (internal pullup) -130 A [5]
Line/Load Regulation Efficiency Maximum Capacitive Loading Cap-ESR>=0.004 Ohms Cap-ESR <0.004 Ohms Current Limit Inception Short Circuit Mode Protection Method Short Circuit Duration Sequencing
See Ordering Guide See Ordering Guide
3,300 F non-ceramic [2] 300 F ceramic 12 Amps
Undervoltage Shutdown
External Input Capacitor (See note 3) Remote On/Off Inhibit Control Positive Logic Current Tracking Input Current when grounded Slew rate Tracking Input Range
Autorecovery after overload removal Continuous, no damage (output shorted to ground) Start-up of multiple units may be synchronized by connecting track pins.
Dynamic Characteristics
Dynamic Load Response 70 Sec to within 2% of final value (50 to 100% load step, 1A/Sec load step, 100 F external output cap) 600 KHz
-130 A 1 Volt per mSec max. -0.3V to (+Vin + 0.3V)
Switching Frequency
Output
Minimum Loading Nominal Accuracy Voltage Adjustment Range Temperature Coefficient Ripple/Noise No minimum load 2 % max. of Vsetting See Ordering Guide 40 ppm. per C. of Vout See Ordering Guide Operating Temperature Range Storage Temperature Range Calculated MTBF [4]
Environmental
6 million hours,min. (MPDTH03050 and MPDTH05050) 5.9 million hours,min. (MPDTH12050) -40 to +85 deg.C. -40 to +125 deg.C.
Specification Notes: (1) All specifications are typical unless noted. General conditions for Specifications are +25 deg.C ambient, Vin=nominal, Vout=+2.5V, full load. Cin=100 F, Cout= 0 F. Adequate airflow must be supplied for extended testing under power. For model MPDTH12050, an additional parallel 10 F ceramic input capacitor is required. See note 3. (2) An external output capacitor is not required. However, a 100 F output capacitor improves transient response. (3) The required input capacitor must have a ripple current rating of 300 mA RMS or greater for models MPDTH03050 and MPDTH05050. For model MPDTH12050, the ripple rating must be 750 mA RMS or greater. For model MPDTH12050, an additional parallel 10 F ceramic input capacitor is required.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) TR-332 50% stress, ground benign conditions, Tambient=+40 deg.C. (5) Track input is grounded or equal to Vin. (6) There is no input protection against overvoltage or reversed polarity. Please provide proper fusing and a back-biased diode if there is the possibility of improper polarity. Refer to the Connection Diagram. (7) The outputs are not intended to sink appreciable reverse current. (8) Output current limit and short circuit protection is non-latching. When the overcurrent fault is removed, the converter will immediately recover.
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MPDTH_50 Series.A08 Page 2 of 6
MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
MECHANICAL SPECIFICATIONS
Surface Mount Models MPDTH_WAS
22.10 1.52 1 3.18 3.18 3.18 4 TOP VIEW 2 3 5 SIDE VIEW 19.06 6 9.5 2 12.57 1.52 9.09 MAX. Solder Ball 1.02 6 Places
1.52
Through-hole Pins Models MPDTH_WAH
22.10 19.06 1 3.18 3.18 3.18 4 TOP VIEW 8.50 MAX. SIDE VIEW 2 3 5 6 9.5 2 12.57 Bottom side Clearance 0.25MIN. Host Board 1.52 3.55 1.02 6 Places
Dimensions are in mm.
Third Angle Projection
Dimensions are in millimeters.
I/O CONNECTIONS (Bottom view shown) Pin/Pad Function Pin/Pad 6 Output (Vout) 1 2 3 5 Vout Adjust (trim) 4 Function Ground Track Input Input (Vin) Inhibit remote On/Off control
Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 Components are shown for reference only.
MAXIMUM SAFE OPERATING AREA (DERATING)
MPDTH03050
90 80 70 90 80 70
MPDTH05050
90 80 70 Ta - C 60 50 40 30
0 1 2 3 4 5 6
MPDTH12050
Ta - C
50 40 30 20 0 1 2 3 4 5 6
Ta - C
60
60 50 40 30 20
Natural Convection 100 LFM 200 LFM 400 LFM
20 0 1 2 3 Iout - Amps 4 5 6
Iout - Amps
Iout - Amps
Vout = 2.5V Natural convection Units soldered to a 4" x 4" 4-layer PCB with 1 oz. copper.
Vin = 5v, Vout = 3.3V Natural convection
All output voltages
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MPDTH_50 Series.A08 Page 3 of 6
MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
PRINTED CIRCUIT LAYOUT PATTERN RECOMMENDATION
Surface Mount Models MPDTH_WAS
23.12 2.03 1 3.18 13.59 3.18 3.18 4 5 9.52 2 3 TOP VIEW
3.18
Through-hole Pins Models MPDTH_WAH
23.12 2.03 1 3.18 3 3.18 4 5 1.40 Min. 6 Places Plated through holes TOP VIEW 13.59 9.52 2 19.06 6
19.06 6
2.03
2.03
2.16 Min. 6 Places
Dimensions are in millimeters.
Dimensions are in millimeters.
EFFICIENCY VS. OUTPUT VOLTAGE
Models MPDTH03050WAS/WAH Vout 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. 1.0 V. Iout=4 Amps Efficiency (typ.) 94% 92% 91% 90% 88% 87% Rset Trim Resistor 2.21 K 4.12 K 5.49 K 8.87 K 17.4 K 36.5 K
Models MPDTH05050WAS/WAH Vout 3.3 V. 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. 1.0 V. Iout=4 Amps Efficiency (typ.) 95% 93% 91% 90% 89% 87% 85% Rset Trim Resistor 698 2.21 K 4.12 K 5.49 K 8.87 K 17.4 K 36.5 K
Models MPDTH12050WAS/WAH Vout 5.0 V. 3.3 V. 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. Iout=5 Amps Efficiency (typ.) 93% 91% 89% 88% 87% 86% 84% Rset Trim Resistor 280 2.0 K 4.32 K 8.06 K 11.5 K 24.3 K Open
EFFICIENCY VS. OUTPUT VOLTAGE AND LOAD CURRENT @ 25C
MPDTH03050W (Vin = 3.3V)
100
100 95
MPDTH05050W (Vin = 5V)
100
MPDTH12050W (Vin = 12V)
90
Efficiency (%)
90
90
Efficiency (%)
80
Vout = 2.5 V
Efficiency (%)
85 80 75 70 0 1 2 3
Load Current (Amps) Vout = 3.3 V Vout = 2.5 V Vout = 1.8 V Vout = 1.5 V Vout = 1.2 V Vout = 1.0 V
80
Vout = 5.0 V Vout = 3.3 V
70
Vout = 1.8 V Vout = 1.2 V
70
Vout = 2.5 V Vout = 1.8 V
60
Vout = 0.8 V
60
4 5 6
Vout = 1.2 V
50 0 1 2 3 4 5 6
50 0 1 2 3 4 5 6
Load Current (Amps)
Load Current (Amps)
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MPDTH_50 Series.A08 Page 4 of 6
MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
OUTPUT VOLTAGE ADJUSTMENT
The output voltage may be adjusted over a limited range by connecting an external trim resistor (Rset) between the VoutAdjust (trim) pin and Ground. The Rset resistor must be a 1/10 Watt precision metal film type, 1% accuracy or lower with low temperature coefficient, 100 ppm/C. or better. Mount the resistor close to the converter with short leads. In the tables below, the calculated resistance is given and an equivalent using two series-connected standard value resistors. Do not exceed the specified limits of the output voltage or the converter's maximum power rating when applying these resistors. Also, avoid high noise at the VoutAdjust input. However, you should never connect any capacitors to VoutAdjust to either Ground or Vout to prevent instability.
Ground 10 K VoAdj pin in
Vout
Error Amplifier
in = 2.49 K, MPDTH03050 and MPDTH05050 in = 1.82 K, MPDTH12050
Figure 2. Vout Adjust Input Circuit
MPDTH03050WAS/WAH Output Voltage 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. 1.0 V. 0.8 V. Calculated Rset (K) 2.22 4.18 5.51 8.94 17.5 37.5 Standard value resistors 2 K + 220 3.9 K + 270 5.1 K + 390 8.2 K + 750 16 K + 1.5 K 36 K + 1.5 K Open
MPDTH05050WAS/WAH Output Voltage 3.3 V. 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. 1.0 V. 0.8 V. Calculated Rset (K) 0.71 2.22 4.18 5.51 8.94 17.5 37.5 Standard value resistors 680 + 30 2 K + 220 3.9 K + 270 5.1 K + 390 8.2 K + 750 16 K + 1.5 K 36 K + 1.5 K Open
MPDTH12050WAS/WAH Output Voltage 5.0 V. 3.3 V. 2.5 V. 2.0 V. 1.8 V. 1.5 V. 1.2 V. Calculated Rset (K) 0.29 1.99 4.33 8.18 11.51 24.85 Standard value resistors 270 + 20 2 K 4.3 K + 30 7.5 K + 680 11 K + 510 24 K + 820 Open
0.8V Rset (K) = 10 K x Vout - 0.8V - 2.49 K
0.8V Rset (K) = 10 K x Vout - 0.8V - 2.49 K
0.8V Rset (K) = 10 K x Vout - 1.2V - 1.82 K
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MPDTH_50 Series.A08 Page 5 of 6
MPDTH***50 Series
Adjustable Non-isolated 6-Amp POLA DC/DC Converters
APPLICATION NOTES
Tracking Input
When enabled, the tracking function allows the output to follow an external analog signal presented at the Tracking input. This pin becomes active approximately 50 mS after the input voltage has been applied and the converter reaches regulation. External track inputs must be referred to Ground. Several converters may be Tracked in parallel to generate outputs which rise and fall together. The Tracking input range is zero Volts up to the nominal set-point output voltage. If the Tracking input rises above the Vout nominal voltage, Vout will remain at the set point after the power up ramp. If Track is unused, it should be connected to +Vin. Please note that because of the Under Voltage input lockout feature (UVLO), the output cannot follow Track In during power up.
voltage present. If such prebias voltage is present on the output at the time of startup, the converter will operate in a manner which avoids excessive reverse current being sourced back into the output. This pre-bias protection will continue until the converter achieves normal regulation at its set-point output voltage. In order to achieve successful pre-bias voltage protection, several conditions must be met: [1] The pre-bias voltage must be lower than the expected final set-point output voltage. If the pre-bias voltage remains higher than the set-point and is capable of back-driving excess current, possible output damage may occur. If the pre-bias voltage has high impedance or has very limited current capability, normal startup will proceed. [2] Tracking operation must not be used during pre-bias startup. The Tracking input should be either open or connected to Vin so that normal soft start will proceed. After successful startup of approximately 50 mSec, Tracking may be resumed. [3] Carefully examine any output circuits with large external output capacitors and low-ESR. If there is no bleeder circuit or other method to reduce the stored voltage AND the cap voltage is higher than the expected set-point, operation may fail or the output may be damaged. Smaller capacitors with lower energy storage should not interfere with startup. See the recommended Connection Diagram. Use only as much output capacitance as needed. Also be careful immediately turning the converter back on after the Inhibit control turns the converter off. Any energy stored in larger output capacitors may cause the problems described above.
Over-Current Output Protection
If excess current is drawn from the converter, the output will shut down and then periodically attempt to restart with narrow full power cycles. If the excess load is reduced to within the rated maximum load, the converter will immediately restart and operate normally. If the load is still too great, another power-down cycle will begin. This is called "hiccup" operation. It significantly reduces the output power to avoid damage. The converter will quickly and automatically recover once the load is reduced.
Pre-Bias Operation
The MPDTHxx050 series of converters use synchronous rectification in their output circuits. Normally, synchronous rectification may cause excess current being sunk back in to the converter if there is higher external output
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Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 and 14001 REGISTERED
04/06/09
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2009 Murata Power Solutions, Inc.
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MPDTH_50 Series.A08 Page 6 of 6

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