Q-ClassConverters QHS55-012 Model OBSOLETE PRODUCT Model Parameter 1.2V Output Voltage Setpoint Line/Load Regulation Max Output total regulation Output adjust Remote-sense Comp. Units 1.18 – 1.22 Vdc 0.1%, 0.2% % Vo 1.16 – 1.24 Vdc 90-110 %Vo,nom 10% V Max 100 Min 0.1 A Max 55 A Efficiency (48V, Full load, 25C) Typ 86.5% % External Capacitance Max 40,000 μF ΔVo 150 μs Output Ripple & Noise (note 2) Output Current Transient Response (typ) (note3) mVp-p mV 25% step, 1A/μs Over-voltage trip point -static -dynamic Ts 300 max 1.45 – 1.65 1.8 V Over-current trip point Typ 66 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 QHS55-012_6201051522_C01_22/04/08 Q-ClassConverters Murata Power Solutions QHS55-012 Model Parameter Input Isolation Temperature Protection Conditions 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 Over-Temperature Safety 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 MTBF(Bellcore) Min. 2.28”L x 1.45” W x 0.47”H (57.91 x 36.83 x 11.8 mm) Calculated at 40C ambient, 100% Iomax: 1,000,000 Hrs The QHS55-012 Complies with IEC/EN/CSA/UL 60950, provides basic insulation, input to output. c-UL-us (US and Canada) recognized. TUV (Bauart) approved. QHS55-012 Thermal Derating TJ = 120ºC Airflow Parallel To Vin to Vout 60 55 50 Output Current [A] 45 40 35 30 25 100 LFM 200 LFM 20 300 LFM 400 LFM 15 Poly. (100 LFM) 10 5 0 25 35 45 55 65 75 85 Ambient Temperature [ºC] www.murata-ps.com/support 2 QHS55-012_6201051522_C01_22/04/08 Q-ClassConverters Murata Power Solutions QHS55-012 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 = 0.1mA max, Voff = 15V max. www.murata-ps.com/support 3 QHS55-012_6201051522_C01_22/04/08 Murata Power Solutions Q-ClassConverters QHS55-012 Model EFFICIENCY Output Ripple and Noise Io=55A BW 100MHz Vin:75V Vin:48V Vin:36V Output Voltage Response to Step Load (30A, -15A load step, di/dt = 1A/us, Tamb=25C, Output Voltage Response to Step Load (30A, +15A load step, di/dt = 1A/us, Tamb=25C,Vin=48V) www.murata-ps.com/support 4 QHS55-012_6201051522_C01_22/04/08 Q-ClassConverters Murata Power Solutions QHS55-012 Model Input Reflected Ripple : Vin=48V, Iout=55A, 25C Scale: 0.5mA/mV Startup Characteristics Vin = 48V Iout = 55A Local O/P Sensing Vin = 48V Iout = 0A Local O/P Sensing Vout Enable Turn-Off Characteristic Pre-Bias Startup Characteristic Vin = 48V Iout=0A, Cout=5000uF Pre-bias of 0.8V Vin = 48V Iout = 55A Vout Enable www.murata-ps.com/support 5 QHS55-012_6201051522_C01_22/04/08 Q-ClassConverters Murata Power Solutions QHS55-012 Model Conducted EMI Characteristic with external filter as specified VREF 0.6125 Vout 1.2 QHS55-012 Trim-up Resistance (kOhm) 1000 5.11 Vout ( 100 %) VREF % Rdown 511 511 10.22 Resistance (kOhm) Rup % 10.22 % 100 10 0 2 4 Delta % 6 8 10 Safety considerations The QHS series of converters comply with IEC/EN/CSA/UL 60950, providing basic insulation, input to output and is c-UL-us (US & Canada) certified. TUV approved. 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. www.murata-ps.com/support 6 QHS55-012_6201051522_C01_22/04/08 Murata Power Solutions Q-ClassConverters QHS55-012 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 QHS55-012_6201051522_C01_22/04/08