NDY SERIES Isolated 3W Wide Input DC/DC Converters Min Efficiency1 Typical Isolation Capacitance SELECTION GUIDE (V) (V) (mA) (mA) (mA) (%) (pF) kHrs NDY0505 5 5 100 -150 400- 600 615 66 40 1939 NDY0509 5 9 55-83 222-333 563 72 52 1926 NDY0512 5 12 42-62 166-250 548 71 43 1907 NDY0515 5 15 33-50 133-200 533 73 44 1924 FEATURES NDY1205 12 5 150 600 362 71 36 1928 ■ Industry Standard Footprint NDY1209 12 9 83 333 320 78 52 1916 ■ Single Isolated Output NDY1212 12 12 62 250 316 78 44 1897 NDY1215 12 15 50 200 308 79 47 1914 NDY2403 24 3.3 227 909 178 70 30 1671 NDY2405 24 5 150 600 174 70 36 1673 NDY2409 24 9 83 333 156 78 52 1663 ■ Power Density 0.90W/cm NDY2412 24 12 62 250 154 80 44 1644 ■ 2:1 Wide Input Range NDY2415 24 15 50 200 150 82 54 1657 NDY4803 48 3.3 227 909 87 71 30 1676 NDY4805 48 5 150 600 87 73 35 1668 NDY4809 48 9 83 333 78 80 52 1663 ■ No Heatsink Required NDY4812 48 12 62 250 77 81 44 1648 ■ Internal SMD Construction NDY4815 48 15 50 200 76 81 53 1661 Nominal Rated Input Output Voltage Voltage Order Code ■ Short Circuit Protection ■ Operating Temperature Range -40°C to +85°C ■ Low Profile 24 Pin Case ■ Efficiency to 82% 3 ■ 5V, 12V, 24V & 48V Input ■ 3.3V, 5V, 9V, 12V & 15V Output ■ Footprint 4.73cm2 ■ UL 94V-0 Package Materials Output Current 4 Min Load Input Current Full Load Full Load MTTF3 ■ Fully Encapsulated ■ Lead Free Compatible INPUT CHARACTERISTICS Parameter 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 85°C 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. www.cdpoweronline.com Voltage Range Reflected1 Ripple Current Conditions MIN TYP MAX 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 Units 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 300°C 25% of rated load 1.7W 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=25°C, nominal input voltage and rated output current unless otherwise specified. NDY SERIES Isolated 3W Wide Input DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Voltage Set Point Accuracy 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 Line Regulation Load Regulation Ripple2 Noise MIN TYP MAX Units ±1 ±5 % 0.05 0.2 % 0.05 0.5 % 0.6 0.5 % 0.2 0.5 % 80 120 mV rms 5 10 mV rms 180 mV p-p 50 100 mV p-p TYP MAX Units ISOLATION CHARACTERISTICS Parameter Conditions Isolation Test Voltage Resistance Flash tested for 1 second Viso=500VDC MIN 1000 1 VDC GΩ GENERAL CHARACTERISTICS Parameter Conditions MIN 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 TYP MAX Units 220 560 220 560 kHz MECHANICAL DIMENSIONS 1.27 (32.26) PIN CONNECTIONS (TOP VIEW) 1 24 VIN 0V 10 15 0V +V 11 14 +V GND 12 13 GND VIN 0.577 (14.66) 0.275 (7.00) 0.185 (4.70) 0.145 (3.70) 0.033 (0.84) 0.021 (0.54) 1.10 (27.94) 0.10 (2.54) 0.012 (0.30) 0.008 (0.20) 0.644 (16.35) Max Weight: 6.2g (3.3V O/P 6.7g) 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=25°C, 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 Value 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 COUT LOUT 10µF, 200V Philips Part Number 151621809 or any good low esr capacitor 100µF, 25V Philips Part Number 13556101 or any good low esr capacitor C&D Technologies Part No 24100 FILTER CIRCUIT 1 VIN +VOUT CIN COUT NDY 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 LOUT VIN CIN NDY GND Operation Storage Cooling Conditions MIN -40 -50 TYP MAX Units 85 130 °C °C Free air convection NDY05 POWER DERATING CURVE Output Power (W) 5 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&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 COUT OV ENVIRONMENTAL Parameter +VOUT 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.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: [email protected]