VTM Current Multiplier VTM48Ex120y025A00 S CUNRTL S High-Efficiency Sine Amplitude Converter Features & Benefits Product Ratings 48V to 12V 25A current multiplier DC DC V = 26 55V I = 25A (Nominal) IN OUT Operating from standard 48V or 24V PRM Regulators V = 6.5 13.8V (No Load) K = 1/4 OUT High efficiency (>96%) reduces system power consumption Product Description 3 High density (85A/in ) The VI Chip current multiplier is a high-efficiency (>96%) Full Chip VI Chip package enables surface mount, Sine Amplitude Converter (SAC) operating from a 26 to 55V DC low-impedance interconnect to system board primary bus to deliver an isolated output. The Sine Amplitude Contains built-in protection features against: Converter offers a low AC impedance beyond the bandwidth of most downstream regulators therefore capacitance normally Overvoltage Lockout at the load can be located at the input to the Sine Amplitude Overcurrent Converter. Since the K factor of the VTM48EF120T025A00 is 1/4, Short Circuit the capacitance value can be reduced by a factor of 16, resulting in Overtemperature savings of board area, materials and total system cost. Provides enable / disable control, The VTM48EF120T025A00 is provided in a VI Chip package internal temperature monitoring compatible with standard pick-and-place and surface mount assembly processes. The co-molded VI Chip package provides ZVS / ZCS resonant Sine Amplitude Converter topology enhanced thermal management due to a large thermal interface area and superior thermal conductivity. The high conversion Less than 50C temperature rise at full load efficiency of the VTM48EF120T025A00 increases overall in typical applications system efficiency and lowers operating costs compared to conventional approaches. Typical Applications The VTM48EF120T025A00 enables the utilization of Factorized Power Architecture which provides efficiency and size benefits High-End Computing Systems by lowering conversion and distribution losses and promoting Automated Test Equipment high-density point-of-load conversion. High-Density Power Supplies Part Numbering Communications Systems Product Number Package Style (x) Product Grade (y) F = J-Lead T = 40 to 125C VTM48Ex120y025A00 T = Through hole M = 55 to 125C For Storage and Operating Temperatures see General Characteristics Section Typical Application Regulator Voltage Transformer VC TM PR SG VC OS PC PC CD L TM (See Application Note AN:024) IL VTM PRM O Transformer Regulator A +OUT +OUT +IN +IN D V IN -OUT -OUT -IN -IN TM Factorized Power Architecture VTM Current Multiplier Rev 3.6 Page 1 of 19 07/2018VTM48Ex120y025A00 Absolute Maximum Ratings The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device. Parameter Comments Min Max Unit +IN to IN 1.0 60 V DC PC to IN 0.3 20 V DC TM to IN 0.3 7 V DC VC to IN 0.3 20 V DC +IN / IN to +OUT / OUT (hipot) 2250 V DC +OUT to OUT 1.0 16 V DC Electrical Specifications Specifications apply over all line and load conditions unless otherwise noted boldface specifications apply over the temperature range of 40C < T < 125C (T-Grade). All other specifications are at T = 25C unless otherwise noted. J J Attribute Symbol Conditions / Notes Min Typ Max Unit Powertrain No external VC applied 26 55 Input Voltage Range V V IN DC VC applied 0 55 V Slew Rate dV / dt 1 V / s IN IN Module latched shutdown, No external VC applied, V UV Turn Off V 24 26 V IN IN UV I = 25A OUT V = 48V 3 15 IN V = 26 55V 17 IN No Load Power Dissipation P W NL V = 48V, T = 25C 5.3 6.5 IN C V = 26 55V, T = 25C 9 IN C VC enable, V = 48V, C = 1000F, IN OUT Inrush Current Peak I 10 20 A INRP R = 471m LOAD DC Input Current I 7 A IN DC Transfer Ratio K K = V / V , I = 0A 1/4 V / V OUT IN OUT Output Voltage V V = V K I R V OUT OUT IN OUT OUT Output Current (Average) I 25 A OUT AVG Output Current (Peak) I t < 10ms, I 25A 37.5 A OUT PK PEAK OUT AVG Output Power (Average) P I 25A 300 W OUT AVG OUT AVG V = 48V, I = 25A 95.0 96.0 IN OUT Efficiency (Ambient) V = 26 55V, I = 25A 93.5 % AMB IN OUT V = 48V, I = 12.5A 94.5 95.5 IN OUT Efficiency (Hot) T % V = 48V, = 100C, I = 25A 94.5 95.6 HOT C IN OUT Efficiency (Over Load Range) % 5A < I < 25A 80 20% OUT VTM Current Multiplier Rev 3.6 Page 2 of 19 07/2018