QHS12ZH-NT

QHS DC/DC Series Data Sheet Features • • • • • • • • • • • Applications • • • • Distributed Power Architectures Telecommunications Equipment LAN/WAN Applications Data Processing Applications • • Low Profile – 12.7 mm Height Input/output Isolation: 1500VDC, Basic Insulation High Efficiency - Up to 92% at Full Load Start-up into High Capacitive Load Low Conducted and Radiated EMI Output Overcurrent Protection Output Overvoltage Protection Back Drive Protection Overtemperature Protection Remote Sense Remote On/Off (Primary Referenced), Positive or Negative Logic Output Voltage Trim Adjust UL 1950 Recognition, CSA 22.2 No. 950-95 certification, TUV IEC950 Description The QHS is a series of high efficiency, high-density, single output DC/DC converters for onboard conversion of standard telecom and datacom input voltages into isolated low voltage outputs in a through-hole mounting package. The two-board construction provides a cool environment for control components and the integrated metalic substrate PCB provides superior thermal management for power components resulting in enhanced product reliability. A heatsink can be conveniently and effectively attached to the IMS base plate for operations in elevated ambient conditions or where airflow is minimal. Model Selection Model Input Voltage VDC Input Current, Max ADC QHS12ZH QHS25ZG QHS40ZE QHS40ZD QHS40ZB QHS50ZA QHS50ZY 36-75 36-75 36-75 36-75 36-75 36-75 36-75 4.5 4.3 4.5 3.3 2.5 2.7 2.3 Output Voltage Vout, VDC 12.0 5.0 3.3 2.5 1.8 1.5 1.2 Output Rated Current I rated, ADC 12 25 40 40 40 50 50 REV. JUL 17, 2003 Page 1 of 10 Output Ripple/Noise, mV p-p Typical Efficiency @ I rated, % 150 150 150 100 100 100 100 91 92 89 88 85 79 76 QHS DC/DC Series Data Sheet Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect longterm reliability and cause permanent damage to the converter. Table 1. Absolute Maximum Ratings Parameter Input voltage Operating Temperature Conditions/Description Continuous Transient Base Plate Temperature Min Storage Temperature ON/OFF Control Voltage Units VDC VDC -40 Max 75 80 100 -40 125 °C 20 VDC Referenced to -Vin °C Environmental and Mechanical Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Table 2. Environmental and Mechanical Specifications Parameter Shock Sinusoidal Vibration Weight Water Washing MTBF Conditions/Description Halfsine wave, 3 axes GR-63-Core, Section 5.4.2 Standard process Per Bellcore TR-NWT-000332 REV. JUL 17, 2003 Page 2 of 10 Min 50 1 Nom 1.2/35 Yes 1,980 Max Units g g Oz/g kHrs QHS DC/DC Series Data Sheet Isolation Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Table 3. Isolation Specifications Parameter Insulation Safety Rating Isolation Voltage Isolation Voltage Isolation Resistance Isolation Capacitance Conditions/Description Min Input to output, input to base plate Output to base plate 1500 500 10 Nom Basic Max Units VDC VDC MOhm pF 1000 Input Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Table 4. Input Specifications Parameter Input Voltage Turn-On Input Voltage Turn-Off Input Voltage Input over voltage protection Turn-On Time Input Reflected Ripple Current Conditions/Description Continuous Ramping Up Ramping Down Ramping up To Output Regulation Band 100% Resistive Load Full Load, 12uH source inductance Inrush Transient Vin=Vin.max REV. JUL 17, 2003 Page 3 of 10 Min 36 76 Nom 48 34 33 Max 75 84 5 Units VDC VDC VDC VDC ms 60 mA p-p 0.1 As 2 QHS DC/DC Series Data Sheet Output Specifications All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted. Table 5. Output Specifications Parameter Output Voltage Setpoint Accuracy 1.8V 2.5V 3.3V 12V Output Current* Line Regulation Load Regulation Total output voltage regulation Remote Sense Headroom*** Dynamic Regulation Peak Deviation Settling Time Admissible Load Capacitance Output Current Limit Threshold** Switching Frequency Overvoltage Protection, Non Latching Trim Range Conditions/Description Vin=Vin.nom, Full Load See selection chart for Irated Vin.min to Vin.max, Irated Vin=Vin.nom, 10% to 100%Irated Over all input voltage, load, and temperature conditions Min Nom -1.67 -2.00 -1.5 -2.0 0 -3 Max Units 1.67 2.00 1.5 2.0 100 0.2 0.75 3 %Vout %Vout %Vout %Vout %Irated %Vout %Vout %Vout 10% %Vout 50-75% load step change 5 250 to 1% error band %Vout µs Irated, Nom Vin 27,000 µF 12V 8,000 µF 150 Vout≤0.97Vout.nom 2.5V and 1.8V 3.3V 12V Over all input voltage and load conditions Irated, Vin=Vnom 110 120 140 %Irated kHz kHz kHz %Vout 90 110 %Vout 300 450 400 * At Iout