EHS15 - 3.3V Model Model Parameter Output Voltage Setpoint Line/Load Regulation 3.3V Max 3.25 - 3.35 Vdc 0.1% / 0.2% % Vo Output total regulation 3.2 - 3.4 Output adjust (note 4) 90-110 Remote-sense Comp. Output Ripple & Noise (note 2) Max Output Current Efficiency (48V, Full load, 25C) Typ External Capacitance Transient Response (typ) (note 3) 25% step, 1A/s Over-voltage trip point (latching) Over-current trip point (non-latching) Vo Ts Vdc %Vo,nom 10% V 100 mVp-p 0 - 15 A 90% % 1,000 - 10,000 F 165 400 mV 4.0-4.6 Typ Units 20 s V A All specifications, waveforms, charts at Ta=25C, Vin=48V, unless otherwise specified th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 www.cd4power.com Page 1 EHS15 - 3.3V Model Parameter Conditions Input Input Voltage (Vin) Reflected Ripple Current Inrush Transient Undervoltage Lockout (non-latching) Over-voltage lockout (non-latching) Input-Output Resistance; input-output Operating Ambient Storage Temperature Protection Over-Temperature Physical Information Dimensions (non-latching) (max) Typ. Max. Units 36 48 10 75 0.2 Vdc `mA p-p 2 As 100 V 35 34 81 Vdc Vdc Vdc Vdc Mohm C C See note (1) Input Voltage Transient Isolation Min. 100mS 10% duty cycle Turn-on Turn-off Turn-off Measured on PCB 32 31 77 1500 10 -40 -40 90 125 130 C 2.30"L x 0.82" W x 0.37"H (58.4 x 20.8 x 9.3 mm) Calculated at 40C ambient, (Bellcore) 1,000,000 Hrs EHS15/20 Series Demonstrated at 40C ambient with 90% confidence: 2,800,000 Hrs Complies with IEC/EN/CSA/UL 60950, provides basic insulation, input to output. c-UL-us (US and Canada) recognized, TUV certified (Bauart). MTBF Safety Pin Assignments Pin # 1 2 3 Description Vin (+) Enable Vin(-) th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 Pin # 4 5 6 Description Vout(-) Sense Vo adj Pin # 7 8 Description Sense + Vo (+) www.cd4power.com Page 2 EHS15-033 Thermal Derating EHS15-033 Thermal Derating Airflow from Vo(-) to Vo(+), Tj = 120C Airflow from Vin to Vo, Tj = 120C 20 20 15 15 Output Current [A] Output Current [A] EHS15 - 3.3V Model 400 LFM 10 300 LFM 10 400 LFM 300 LFM 200 LFM 200 LFM 5 5 100 LFM 100 LFM 0 0 25 35 45 55 Ambient Temperature [C] 65 75 25 85 35 45 Q4.3.nov.03 55 65 Ambient Temperature [C] 75 85 Q4.3.nov.03 EHS15-033 Enable with Pre-Bias Efficiency of EHS15-033 @ 25C Ambient Efficiency [%] 91 89 87 85 83 81 79 77 48Vin 36Vin 75Vin 75 4 6 8 10 12 14 16 Q4 Output Current [A] Output Voltage @ 0.5 V/div., 2 ms/div. Prebias voltage =2.5 Vdc. Input Voltage 48 V Load current = 0, Load capacitance = 1000 uF. EHS15-033 Trim-up and Trim-down Resistance EHS15-033 Trim Up/Down Formula 1000 Where % ( Vout 510 10.2 Rup (3.3 V) K % Vnom) . 100 and, Vout = Target output voltage Vnom Rdown ( % ) 510 Where 10.2 K % % Resistance (Kohms) 5.10. Vnom. ( 100 % ) 1.225. % Rup Rdown 100 ( Vnom Vout ) . 100 Vnom 10 0% th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 2% 4% 6% Delta (%) 8% 10% www.cd4power.com Page 3 EHS15 - 3.3V Model EHS15-033 Startup Sequence from Vin EHS15-033 Startup Sequence from Enable Top Trace: Vout @ 0.5 V/div. Bot. Trace: Vin @ 20V/div. (48Vdc) Horiz. @ 50 ms/div. Load: 15 A, 0 uF, Turn-on delay: 110mS Top Trace: Vout @ 0.5 V/div. Bot. Trace: Venable @ 2 V/div. Horiz. @ 5 ms/div. Load: 15 A, 0 uF, Turn-on delay: 6.7 ms EHS15-033 Transient Response 50-75% step, 1A/ s EHS15-033 Transient Response 50- 25% step, 1A/ s EHS15-033 Output Ripple Voltage, Io=15A EHS15-033 Input Reflected Ripple Current Input Current @ 50 mA/div., 20 us/div. (11 mApp) Input Voltage: 48 V, Load Current: 15 A Note: see test circuit on following page. th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 www.cd4power.com Page 4 EHS15 - 3.3V Model Notes: 1. Input Reflected Ripple is specified when measured with the filter shown below is ic L2 Vin 1 2u F 220 uF , E S R < 0.1 O hm s @ 1 00 kH z 3 3uF , E S R < 0.7 O h m s @ 1 00k H z DC-DC Converter RTN 2. Output Ripple and noise is specified when measured with a 10uF tantalum and a 1uF ceramic capacitor at the converter output pins 3. Transient response is specified with a 470uF tantalum capacitor at the output of the converter 4. Trim resistor connection: Rtrim-up connected from Vo adj to Vo(+), Rtrim -down connected from Vo adj to Vo(-). EHS15-033 Enable Pin Connection Table NEGATIVE LOGIC VERSION POSITIVE LOGIC VERSION Note: ENABLE POWER SUPPLY 0V < Venable < 0.8V (internal pull-up > 50Kohms @ 5V) 2.5V < Venable < 15V (external pull-up > 1Kohms) DISABLE POWER SUPPLY 2.5V < Venable < 15V (external pull-up > 1Kohms) 0V < Venable < 0.8V (internal pull-up > 50Kohms @ 5V) Power Supply has internal pull-up resistor. Enable pin is in a valid "high" state if left open-circuit. Safety considerations The EHS series of converters are certified to IEC/EN/CSA/UL 60950. If this product is built into information technology equipment, the installation must comply with the above standard. An external input fuse (5A to 30A recommended), must be used to meet the above requirements. The output of the converter [Vo(+)/Vo(-)] is considered to remain within SELV limits when the input to the converter meets SELV or TNV-2 requirements. The converters and materials meet UL 94V-0 flammability ratings. th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 www.cd4power.com Page 5 EHS15 - 3.3V Model Part Number Designations RoHS Compliant The EHS series of converters is in compliance with the European Union Directive 2002/95/EC (RoHS) with respect to the following sustances: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE). C&D Technologies, Inc. reserves 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 website to ensure that you have the current and complete specification for your product before use. C&D Technologies, Inc. 2007 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, Inc. Instructions for use are available from: www.cd4power.com th 4118 14 Avenue, Unit 4 Markham, Ontario L3R 0J3 1-866-740-1232 EHS15-6200951462_C04_26Jun07 www.cd4power.com Page 6