EHS15 – 3.3V Model OBSOLETE PRODUCT Model Parameter Output Voltage Setpoint Line/Load Regulation 3.3V Max Units 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. 10% V 100 mVp-p 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 0 - 15 A 90% % 1,000 - 10,000 F 165 400 mV s 4.0-4.6 Typ V A 20 All specifications, waveforms, charts at Ta=25C, Vin=48V, unless otherwise specified For full details go to www.murata-ps.com/rohs www.murata-ps.com www.murata-ps.com/support Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 Page 1 EHS15 – 3.3V Model Parameter Conditions Input Input Voltage (Vin) Reflected Ripple Current Inrush Transient Temperature Protection Undervoltage Lockout (non-latching) Over-voltage lockout (non-latching) Input-Output Resistance; input-output Operating Ambient Storage Over-Temperature Physical Information Dimensions (non-latching) (max) Typ. Max. Units 36 48 10 75 0.2 Vdc ‘mA p-p A2s 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(-) www.murata-ps.com/support www.murata-ps.com Pin # 4 5 6 Description Vout(-) Sense Vo adj Pin # 7 8 Description Sense + Vo (+) Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 Page 2 EHS15-033 Thermal Derating EHS15-033 Thermal Derating Airflow from Vo(-) to Vo(+), Tj = 120ºC Airflow from Vin to Vo, Tj = 120ºC 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 [ºC] 65 75 25 85 35 45 Q4.3.nov.03 55 65 Ambient Temperature [ºC] 75 85 Q4.3.nov.03 EHS15-033 Enable with Pre-Bias Efficiency of EHS15-033 @ 25°C 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 5.10 Vnom ( 100 % ) 1.225 % Where % ( Vout Vnom) 100 510 % 10.2 K and, Vout = Target output voltage Vnom Rdown ( % ) 510 % Where 10.2 K % ( Vnom Vout ) 100 Resistance (Kohms Rup Rup (3.3 V) Rdown 100 Vnom 10 0% www.murata-ps.com/support www.murata-ps.com 2% 4% 6% Delta (%) 8% 10% Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 Page 3 EHS15 – 3.3V Model EHS15-033 Startup Sequence from Vin 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 EHS15-033 Transient Response 50-75% step, 1A/s EHS15-033 Startup Sequence from Enable 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- 25% step, 1A/s EHS15-033 Input Reflected Ripple Current EHS15-033 Output Ripple Voltage, Io=15A 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. www.murata-ps.com/support www.murata-ps.com Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 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 2 2 0 uF , E S R < 0.1 O h m s @ 1 00 k H z 33uF, E S R < 0 .7 O hm s @ 1 0 0 kH 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. www.murata-ps.com/support www.murata-ps.com Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 Page 5 EHS15 – 3.3V Model Part Number Designations Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED www.murata-ps.com/support www.murata-ps.com This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ 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. © 2012 Murata Power Solutions, Inc. Technical Inquires email: [email protected], tel: +1 (866)740 1232 EHS15.C06 Page 6