NMH SERIES Isolated 2W Dual Output DC-DC Converters SELECTION GUIDE Nominal Input Voltage Output Voltage Output Current Input Current at Rated Load (V) 5 5 5 5 12 12 12 12 24 24 24 24 48 48 48 48 (V) 5 9 12 15 5 9 12 15 5 9 12 15 5 9 12 15 (mA) ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 (mA) 500 494 488 476 208 201 198 198 103 98 97 97 51 51 49 49 Order Code NMH0505S NMH0509S NMH0512S NMH0515S NMH1205S NMH1209S FEATURES NMH1212S ■ Wide Temperature performance at full 2 Watt load, –40°C to 85°C NMH1215S ■ Dual Output from a Single Input Rail NMH2409S NMH2405S NMH2412S ■ Industry Standard Pinout NMH2415S ■ Power Sharing on Output NMH4805S ■ 1kVDC Isolation NMH4809S ■ Efficiency to 86% NMH4812S ■ Power Density up to 1.44W/cm3 ■ 5V, 12V, 24V & 48V Input ■ 5V, 9V,12V and 15V Output ■ Footprint from 1.46cm 2 ■ UL 94V-0 Package Material ■ No Heatsink Required ■ Internal SMD Construction ■ Toroidal Magnetics ■ Fully Encapsulated ■ No External Components Required ■ MTTF up to 2.0 Million hours ■ Custom Solutions Available ■ No Electrolytic or Tantalum Capacitors DESCRIPTION The NMH series of industrial temperature range DC-DC converters are the standard building blocks for on-board point-of-use power systems. They are ideally suited for providing dual rail supplies on single rail boards with the added benefit of galvanic isolation to reduce circuit noise. All of the rated power may be drawn from a single pin provided the total load does not exceed 2W. Pin compatibility with the NMA 1 watt series ensures minimal effort in upgrading distributed power systems. www.dc-dc.com NMH4815S MTTF 1 (%) 80 81 82 84 80 83 84 84 81 85 86 86 82 82 85 85 (pF) 24 28 30 33 35 55 63 66 41 75 95 104 45 74 90 112 kHrs 1574 663 338 187 490 343 229 148 318 249 183 127 235 195 152 112 SIP SIP SIP SIP When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the additional external capacitance for reliable start up. INPUT CHARACTERISTICS Parameter MIN TYP MAX Units Continuous operation, 5V input types 4.5 Continuous operation, 12V input types 10.8 Voltage Range Continuous operation, 24V input types 21.6 Continuous operation, 48V input types 43.2 5V input types 12V input types Reflected Ripple Current 24V input types 48V input types Conditions 5 12 24 48 50 70 130 200 5.5 13.2 26.4 52.8 V mA p-p OUTPUT CHARACTERISTICS Parameter Conditions Rated Power2 Output Voltage Accuracy Line Regulation TA= –40°C to 85°C NMH0505 All other types High V IN to low V IN 10% load to rated load, 5V output types 10% load to rated load, 9V output types Load Regulation 10% load to rated load, 12V output types 10% load to rated load, 15V output types BW=DC to 20MHz, 5V output types BW=DC to 20MHz, 9V output types Ripple & Noise BW=DC to 20MHz, 12V output types BW=DC to 20MHz, 15V output types MIN TYP MAX Units W 1.0 5 2 7.5 5 1.2 10 3 10 150 100 80 70 200 150 150 150 –5 –5 % %/% % mV p-p ABSOLUTE MAXIMUM RATINGS Short circuit duration 3 Internal power dissipation Lead temperature 1.5mm from case for 10 seconds Input voltage V IN , NMH05 types Input voltage V IN , NMH12 types Input voltage V IN , NMH24 types Input voltage V IN , NMH48 types 1second 300mW 300°C 7V 15V 28V 54V 1 Calculated using MIL-HDBK-217F with nominal input voltage at full load. 2 See derating curve 3 Supply voltage must be discontinued at the end of the short circuit duration. 4 Replace suffix “S” with “D” for DIP package style. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. NMH SERIES Isolated 2W Dual Output DC-DC Converters ISOLATION CHARACTERISTICS PIN CONNECTIONS Parameter Conditions MIN Isolation Test Voltage Resistance Flash tested for 1 second Viso=500V TYP 1000 1 10 MIN TYP MAX Units 14 Pin DIP PIN 1 GND 7 NC 8 0V 9 +V 11 –V 14 VIN VDC GΩ GENERAL CHARACTERISTICS Parameter Conditions Switching Frequency 5V input types 12V input types 24 & 48V input types MAX Units 95 90 80 kHz 7 Pin SIP PIN 1 VIN 2 GND 4 –V 5 0V 6 +V TEMPERATURE CHARACTERISTICS Parameter Conditions MIN Specification Storage Case Temperature Above Ambient Cooling All output types -40 -50 TYP 5V output types 12V output types Free air convection MAX Units 85 130 °C °C 30 25 °C PERFORMANCE CHARACTERISTICS tolerance envelope 4 + 10% +5% +2.5% V nominal temperature derating graph 3 –2.5% 85°C 2 – 7.5% Safe Operating Area 1 10 50 Output Load Cur rent (%) 0 100 -40 0 50 100 Ambient Temperature (°C) 150 MECHANICAL DIMENSIONS 14 Pin DIP 19.50 Weight: 2.85g 2.13 NMH0505D 9.80 15.24 1.09 7 1 7.70 7.62 XYYWWi 14 11 9 8 0.30 0.20 4.60 3.60 0.55 0.45 2.54 19.50 7 Pin SIP 1.88±0.50 Weight: 2.76g NMH0505S 7.50 10.0 0.30 0.20 1.25 XYYWWi 12.70 4.60 3.60 1 2 4 5 6 0.55 0.45 2.54 C&D Technologies (NCL) Limited reserve the right to alter or improve the specification, internal design or manufacturing process at any time, without notice. Please check with your supplier or visit our web site to ensure that you have the current and complete specification for your product before use. © C&D Technologies (NCL) Limited 2001 NDC NMH.3 No part of this publication may be copied, transmitted or stored in a retrieval system or reproduced in any way including, but not limited to, photography, photocopy, magnetic or other recording means, without prior written permission from C&D Technologies (NCL) Limited. Instructions for use are available from www.dc-dc.com C&D Technologies (NCL) Ltd Tanners Drive, Blakelands North Milton Keynes MK14 5BU, England Tel: +44 (0)1908 615232 Fax:+44 (0)1908 617545 email: [email protected] www: http://www.dc-dc.com All dimensions in mm XX.XX ±0.25mm. All pins on a 2.54mm pitch and within ±0.25mm of true position. C&D Technologies (NCL), Inc. 5816 Creedmoor Road, Raleigh NC 27612, USA Tel: +1 (919) 571-9405 Fax: +1 (919) 571-9262 email: [email protected]