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| NDY SERIES Isolated 3W Wide Input DC/DC Converters SELECTION GUIDE Typical Isolation Capacitance Min Efficiency1 Nominal Rated Input Output Voltage Voltage Output Current 4 Min Load Full Load Input Current Full Load MTTF3 Order Code NDY0505 NDY0509 NDY0512 NDY0515 (V) 5 5 5 5 12 12 12 12 24 24 24 24 24 48 48 48 48 48 (V) 5 9 12 15 5 9 12 15 3.3 5 9 12 15 3.3 5 9 12 15 (mA) 100 -150 55-83 42-62 33-50 150 83 62 50 227 150 83 62 50 227 150 83 62 50 (mA) 400- 600 222-333 166-250 133-200 600 333 250 200 909 600 333 250 200 909 600 333 250 200 (mA) 615 563 548 533 362 320 316 308 178 174 156 154 150 87 87 78 77 76 (%) 66 72 71 73 71 78 78 79 70 70 78 80 82 71 73 80 81 81 (pF) 40 52 43 44 36 52 44 47 30 36 52 44 54 30 35 52 44 53 kHrs 1939 1926 1907 1924 1928 1916 1897 1914 1671 1673 1663 1644 1657 1676 1668 1663 1648 1661 FEATURES Industry Standard Footprint Single Isolated Output Short Circuit Protection Operating Temperature Range -40C to +85C Low Profile 24 Pin Case Efficiency to 82% Power Density 0.90W/cm 2:1 Wide Input Range 5V, 12V, 24V & 48V Input 3.3V, 5V, 9V, 12V & 15V Output Footprint 4.73cm2 UL 94V-0 Package Materials No Heatsink Required Internal SMD Construction Fully Encapsulated Lead Free Compatible DESCRIPTION The NDY series is a range of low profile DC/DC converters offering a single regulated output over a 2:1 input voltage range. All parts deliver 3W output power up to 85C without heatsinking, except the 4.5V to 9V input voltage range which should be derated to 2W at the lower input voltage. A flyback oscillator design with isolated feedback is used to give regulation over the full operating range of 25% to 100% of full load. It is strongly recommended that external capacitors be used on input and output to guarantee performance over full load and input voltage range (see recommended filter circuit for values). The plastic case and encapsulant materials are rated to UL 94V-0 and the connection pins are formed from a tin plated alloy 42 leadframe. 3 NDY1205 NDY1209 NDY1212 NDY1215 NDY2403 NDY2405 NDY2409 NDY2412 NDY2415 NDY4803 NDY4805 NDY4809 NDY4812 NDY4815 INPUT CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Voltage Range Reflected1 Ripple Current All NDY05XX All NDY12XX All NDY24XX All NDY48XX NDY24032 NDY48032 All NDY05XX All NDY12XX All other NDY24XX All other NDY48XX 4.5 9 18 36 5 12 24 48 180 140 400 150 290 100 9 18 36 72 360 290 500 170 360 127 VDC mA p-p ABSOLUTE MAXIMUM RATINGS Short-circuit protection Input voltage 05 types Input voltage 12 types Input voltage 24 types Input voltage 48 types Lead temperature 1.5mm from case for 10 seconds Minimum Load Internal Dissipation continuous 10V 20V 40V 80V 300C 25% of rated load 1.7W www.cdpoweronline.com 1 Measured at full load with external input/output capacitors, refer to filter circuit 1. 2 For lower ripple refer to filter circuit 2. 3 Calculated using MIL-HDBK-217F with nominal input voltage at full load. 4 Refer to power derating graph. All specifications typical at TA=25C, nominal input voltage and rated output current unless otherwise specified. NDY SERIES Isolated 3W Wide Input DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Voltage Set Point Accuracy Line Regulation Load Regulation Ripple2 Noise With external input/output capacitors, refer to filter circuits Low line to high line, 3.3V output with external input/output capacitors, refer to filter circuit 1 Low line to high line, with external input/output capacitors, refer to filter circuit 1 25% load to 100% load, 3.3V output with external input/output capacitors, refer to filter circuit 1 25% load to 100% load, with external input/output capacitors, refer to filter circuit 1 BW = 20Hz to 300kHz. 3.3V output with external input/output capacitors, refer to filter circuit 1 BW = 20Hz to 300kHz. With external input/output capacitors, refer to filter circuit 1 BW = DC to 100MHz. 3.3V output with external input/output capacitors, refer to filter circuit 1 BW = DC to 100MHz. With external input/output capacitors, refer to filter circuit 1 1 0.05 0.05 0.6 0.2 80 5 5 0.2 0.5 0.5 0.5 120 10 180 % % % % % mV rms mV rms mV p-p mV p-p 50 100 ISOLATION CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Isolation Test Voltage Resistance Flash tested for 1 second Viso=500VDC 1000 1 VDC G GENERAL CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Switching Frequency 100% load VIN nominal 3.3V output 25% load VIN nominal 3.3V output 100% load VIN nominal 25% load VIN nominal 160 290 80 290 220 560 220 560 kHz MECHANICAL DIMENSIONS 1.27 (32.26) PIN CONNECTIONS (TOP VIEW) VIN 0.577 (14.66) 1 24 VIN 0.275 (7.00) 0V +V 0.185 (4.70) 0.145 (3.70) 0.033 (0.84) 0.021 (0.54) 1.10 (27.94) Weight: 6.2g (3.3V O/P 6.7g) 10 11 12 15 14 13 0V +V GND 0.10 (2.54) 0.012 (0.30) 0.008 (0.20) 0.644 (16.35) Max GND 1 Measured at full load with external input/output capacitors, refer to filter circuit 1. 2 For lower ripple refer to filter circuit 2. 3 Calculated using MIL-HDBK-217F with nominal input voltage at full load. 4 Refer to power derating graph. All specifications typical at TA=25C, nominal input voltage and rated output current unless otherwise specified. www.cdpoweronline.com NDY SERIES Isolated 3W Wide Input DC/DC Converters FILTER CIRCUITS EXTERNAL CAPACITANCE Although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line and load range. All parts have been tested and characterised using the following values and test circuit. CIN Value COUT LOUT 10F, 200V Philips Part Number 151621809 or any good low esr capacitor 100F, 25V Philips Part Number 13556101 or any good low esr capacitor C&D Technologies Part No 24100 FILTER CIRCUIT 1 VIN +VOUT CIN NDY COUT OUTPUT LOAD The minimum rated load across the whole input voltage range is 25% of the full load output. It is important to take care that the load does not fall below this as the output ripple will greatly increase. While this condition will not harm the device the resultant increase in output ripple could cause customers' application to malfunction. GND OV FILTER CIRCUIT 2 Recommended circuit for reduced ripple 3.3V O/P VIN LOUT +VOUT CIN NDY COUT GND OV ENVIRONMENTAL Parameter Conditions MIN TYP MAX Units Operation Storage Cooling -40 -50 Free air convection 85 130 C C NDY05 POWER DERATING CURVE 5 Output Power (W) 4 3 2 1 0 4.5 5 6 7 Input Voltage (V) 8 9 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) C&D Technologies (NCL) Limited 2003 NDC NDY.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.cdpoweronline.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: info@cdtechno-ncl.com www.cdpoweronline.com C&D Technologies Inc. 3400 E Britannia Drive, Tucson, Arizona 85706, USA Tel: +1 (800) 547-2537 Fax: +1 (520) 741-4598 email: sales@cdtechno.com |
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