HBC25ZH-NT

HBC DC-DC Series Data Sheet 300-Watt Half-Brick Converters Features • • • • • • • • • • • • • Applications • • • • Intermediate Bus architectures Telecommunications equipment LAN/WAN applications Data processing applications High efficiency up to 94% 3 High power density – 110 W/in High current rating - 25A Low profile – 12.7mm height Input/output isolation: 1500VDC Basic insulation Start-up into high capacitive load Low conducted and radiated EMI Output overcurrent protection Output overvoltage protection Overtemperature protection Remote sense Remote on/off (primary referenced), positive or negative logic option Adjustable output voltage from 9.6V to 13.2V UL 1950 Recognition, CSA 22.2 No. 950-95 certification, TUV IEC950 • • Description The HBC Series of high density bus converters convert a worldwide telecom bus voltage of 36 to 75VDC to a 12V bus at 25A. The output is ideal for powering non-isolated, point-of-load converters such as synchronous buck converters used commonly in intermediate bus architectures. The unit's open-frame, two-board construction provides ideal thermal transfer for maximum reliability. Power devices are mounted on an Insulated Metal Substrate (IMS) base plate with very low thermal impedance. The control PCB is physically isolated from the hotter IMS board, providing lower overall component temperatures for high reliability. The standard feature set includes remote on/off, remote output voltage sensing, positive output trim, input undervoltage lockout, and overtemperature shutdown with hysteresis. Model Selection Model Input Voltage VDC Input Current, Max ADC Output Voltage Vout, VDC Output rated Current I rated, ADC Output Ripple/Noise, mV p-p Typical Efficiency @ I rated, % HBC25ZH 36-75 10 12.0 25 150 92 REV. DEC 15, 2003 www.power-one.com Page 1 of 7 HBC DC-DC Series Data Sheet 300-Watt Half-Brick Converters 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. Parameter Input voltage Operating Temperature Conditions/Description Continuous Transient, 100ms Base Plate Temperature Min Storage Temperature ON/OFF Control Voltage -40 Max 75 100 110 -55 125 °C 7 VDC Referenced to -Vin Units VDC VDC °C Environmental and Mechanical Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Shock Sinusoidal Vibration Weight Water Washing MTBF Conditions/Description Halfsine wave, 3 axes GR-63-CORE, Section 5.4.2 Min 50 1 Nom Max 2.6/73 Yes 1,100 Standard process Per Bellcore TR-NWT-000332 Units g g gm kHrs Isolation Specifications All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted. Parameter Insulation Safety Rating Isolation Voltage Isolation Voltage Isolation Resistance Isolation Capacitance Conditions/Description Min Input to output, output to base plate Input to base plate 1500 1500 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. Parameter Input Voltage Turn-On Input Voltage Turn-Off Input Voltage Turn-On Time for turn-on via application of input voltage Turn-On Time for turn-on via ON/OFF signal Input Reflected Ripple Current Inrush Transient REV. DEC 15, 2003 Conditions/Description Continuous Ramping Up Ramping Down Time from Vin=UVLO to regulation band Time from ON/OFF signal to regulation band Full Load, 12µH source inductance Min 36 33 31 Nom 48 60 Max 75 36 33 85 Units VDC VDC VDC mS 10 25 mS 200 mA p-p 0.25 As Vin=Vin.max www.power-one.com Page 2 of 7 2 HBC DC-DC Series Data Sheet 300-Watt Half-Brick Converters Output Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Output Voltage Setpoint Accuracy Output Current* Line Regulation Load Regulation Total output voltage regulation 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 Remote Sense Headroom Dynamic Regulation Peak Deviation Settling Time Min -2 0 Nom -4 Max 2 25 0.5 1.0 4 Units %Vout A %Vout %Vout %Vout 5% %Vout 1,000 mV µs 75-100% load step change 600 600 to 1% error band Admissible Load Capacitance Irated, Nom Vin Output Current Limit Threshold** Switching Frequency Overvoltage Protection, Latching Trim Range Vout≤0.97Vout.nom 110 Over all input voltage and load conditions 115 Irated, Vin=Vnom 80 15,000 µF 150 125 %Irated kHz %Vout 110 %Vout 400 ** Overcurrent protection is non-latching with auto recovery. Feature Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Shutdown (ON/OFF) Negative Logic Converter ON Source Current Converter OFF Open Circuit Voltage Positive Logic Converter ON Open Circuit Voltage Converter OFF Source Current Overtemperature Protection REV. DEC 15, 2003 Conditions/Description Min Nom Max Units 0.8 0.5 7 5 VDC MADC VDC VDC 7 5 0.8 0.5 130 VDC VDC VDC mADC On/Off signal is low – converter is ON -0.5 ON/OFF pin is connected to -Vin 2.5 ON/OFF pin is floating On/Off signal is low–converter is OFF 2.5 ON/OFF pin is floating -0.5 ON/OFF pin is connected to -Vin Base Plate Temperature www.power-one.com 120 Page 3 of 7 °C HBC DC-DC Series Data Sheet 300-Watt Half-Brick Converters 95 For output decoupling we recommend using a 10µF low ESR tantalum capacitor (AVX TPSC106M025R0500 is used in our test setup) and a 1µF ceramic capacitor. Note, that the capacitors do not substitute the filtering required by the load. 90 Shutdown Feature Description EFFICIENCY % Efficiency Curves The ON/OFF pin in the HBC Series converters functions as a normal soft shutdown. It is referenced to the –Vin pin (see Figure 2). With the positive logic, when the ON/OFF pin is pulled low, the output is turned off and the unit goes into a very low input power mode. 85 36V 80 48V 75V 75 0 20 40 60 LOAD % 80 100 Figure 1. HBC25ZH Efficiency vs. Output Load Typical Application Figure 2 shows the recommended connections for the HBC Series converter. HBC25ZH Fuse +Vi +Vo +Sense C1 O n/O ff Trim C2 C3 An open collector switch is recommended to control the voltage between the ON/OFF pin and the -Vin pin of the converter. The ON/OFF pin is pulled up internally, so no external voltage source is required. The user should avoid connecting a resistor between the ON/OFF pin and the +Vin pin. When the ON/OFF pin is used to achieve remote control, the user must take care to ensure that the pin reference for the control is really the -Vin pin. The control signal must not be referenced ahead of EMI filtering, or remotely from the unit. Optically coupling the information and locating the optical coupler directly at the module will solve any of these problems. Note: If the ON/OFF pin is not used, it can be left floating (positive logic), or connected to the -Vin pin (negative logic). -Sense -Vi With negative logic, when the ON/OFF pin is pulled low, the unit is turned on. -Vo OUTPUT VOLTAGE TRIM Figure 2. Typical Application of HBC Series Industry Standard Positive Trim (suffix –T) The HBC Series converters do not require any external components for proper operation. However, if the distribution of the input voltage to the converter contains significant inductance, the capacitor C1 may be required to enhance performance of the converter. A minimum of a 68µF electrolytic capacitor with the ESR