Q-ClassConverters QHS50-018 Model OBSOLETE PRODUCT Model Parameter 1.8V Output Voltage Setpoint Line/Load Regulation 1.78 – 1.82 Vdc 0.1%, 0.2% % Vo 1.75 – 1.85 Vdc 90-110 %Vo,nom +10 %Vo,nom Max 100 mVp-p Max Output total regulation Output adjust Remote-sense Comp. Output Ripple & Noise (note 2) Output Current Units Min 0.5 A Max 50 A Efficiency (48V, Full load, 25C) Typ 88% % External Capacitance Max 10,000 μF Transient Response (typ) (note3) ΔVo 150 mV Ts 300 μs 25% step, 1A/μs Over-voltage trip point – static 2.1 - 2.3 - dynamic Over-current trip point max 2.6 Typ 57 V A All specifications at Ta=25C, Vin=48V, 300 LFM unless otherwise specified For full details go to www.murata-ps.com/rohs www.murata-ps.com/support Technical enquiries email: [email protected], tel: +508 339 3000 1 QHS50-018_6201031512_D01_22/04/08 Q-ClassConverters Murata Power Solutions QHS50-018 Model Parameter Conditions Input Input Voltage (Vin) Reflected Ripple Current (see note 1) Input Current Inrush Transient Input Voltage Transient 100mS 10% duty cycle Undervoltage Lockout Turn-on Turn-off Over-voltage lockout Turn-off Turn-on Input-Output Resistance; input-output Operating Ambient Storage Isolation Temperature Protection Over-Temperature Min. Typ. Max. Units 36 -- 48 -- 32 31 76 75 1500 10 -40 -40 75 10 3 0.2 100 35 34 80 79 --- 85 125 Vdc mA p-p A A2s V Vdc Vdc Vdc Vdc Vdc Mohm °C °C -- 120 -- Deg C Measured on PCB Physical Information Dimensions 2.28”L x 1.45” W x 0.47”H (57.91 x 36.83 x 11.8 mm) MTBF(Bellcore) Calculated at 40C ambient, 100% Iomax: 1,000,000 Hrs Safety Complies with IEC/EN/CSA/UL 60950, provides basic insulation, input to output. c-UL-us (US and Canada) recognized. TUV (Bauart) approved. Thermal Derating Transverse Airflow Tj=110C Thermal Derating Parallel Airflow Tj=125C 55 55 50 50 45 Current (A) Current (A) 45 40 35 30 40 35 30 200lfm 300lfm 400lfm 25 200lfm 300lfm 400lfm 25 20 20 15 10 15 20 10 20 30 40 50 60 Ambient Temp. (C) 70 40 50 60 70 80 Ambient Temp. (C) 80 Thermal Derating Transverse Airflow Tj=125C 55 Therm al Derating Parallel Airflow Tj =110C 50 50 45 Currewnt (A) 55 40 45 Current (A) 30 40 35 35 30 30 20 200lfm 300lfm 400lfm 25 200lfm 300lfm 400lfm 25 20 15 15 10 10 20 30 40 50 60 70 20 80 Am bient Tem p. (C) 30 40 50 60 Ambient Temp. (C) 70 80 www.murata-ps.com/support 2 QHS50-018_6201031512_D01_22/04/08 Q-ClassConverters Murata Power Solutions QHS50-018 Model x Pin Assignments Pin # 1 2 3 Description Vin (+) Enable Vin(-) Pin # 4 5 6 Description Vout(-) Sense Vo adj Pin # 7 8 Description Sense + Vo (+) Notes: 1. Input Reflected Ripple is specified when measured with the filter shown below. is ic L2 Vin 12uF 220uF, ESR<0.1 Ohms @ 100kHz 33uF, ESR<0.7 Ohms @ 100kHz 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 without a capacitor at the output of the converter. 4. The Enable signal is Logic Low. It is referenced to Vi-. The pin should be tied to Vi- if it is not used. Isink = 1mA max, Voff = 15V max. www.murata-ps.com/support 3 QHS50-018_6201031512_D01_22/04/08 Q-ClassConverters Murata Power Solutions QHS50-018 Model QHS50-018 Output Impedance Output Ripple and Noise (Vin=48V, Io=50A, full BW) Output Ripple and Noise (Vin=48V, Io=50A, 20Mz BW) Output Voltage Response to Step Load (50-75% load step, di/dt = 1A/us, Tamb=25C, Vin=48V) www.murata-ps.com/support 4 QHS50-018_6201031512_D01_22/04/08 Q-ClassConverters Murata Power Solutions QHS50-018 Model QHS50-018 Efficiency Input Reflected Ripple (Vin=48V, Iout=50A) 90 PM3380A 88 ch1 ch1: pkpk= 1.51mV 86 Efficiency (%) 84 82 80 75V 78 48V 76 36V T 74 1 72 70 0 10 20 30 Current (A) 40 50 60 CH1 PM3380A Vin = 48V Iout = 0A Local O/P Sensing ch1 PM3380A ch1: BWL MTB5.00us- 1.06dv ch1+ Vin = 48V Iout = 50A Local O/P Sensing Startup Characteristics ch1 2mV= ch1: rise= 1.93ms rise= 2.27ms ch2 T T 1 2 1 CH1 CH1 0.5 V= CH2 2.00 V= 0.5 V= MTB1.00ms- 4.34dv ch1+ MTB1.00ms- 2.32dv ch1+ Conducted EMI Characteristic with external filter as specified www.murata-ps.com/support 5 QHS50-018_6201031512_D01_22/04/08 Q-ClassConverters Murata Power Solutions QHS50-018 Model QHS50-018 Trim-up and Trim-down Resistance 1000 Resistance (kOhms) Rup Rdow n 100 10 0 2 4 Delta (%)6 8 10 Safety considerations The QHS 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 6 QHS50-018_6201031512_D01_22/04/08 Murata Power Solutions Q-ClassConverters QHS50-018 Model Part Number Designations 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. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 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. www.murata-ps.com/support 7 QHS50-018_6201031512_D01_22/04/08