VTM Current Multiplier VTM48Ex120y025A0R S CUNRTL S C US High-Efficiency, Bidirectional Sine Amplitude Converter Features & Benefits Product Ratings 48V to 12V 25A bidirectional current multiplier DC DC V = 26 55V I = 25A (Nominal) PRI SEC Can power a load connected to either the primary or V = 6.5 13.8V (No Load) K = 1/4 SEC secondary side High efficiency (>96%) reduces system power consumption Product Description 3 High density (85A/in ) The VI Chip bidirectional current multiplier is a Sine Amplitude Converter (SAC) operating from a 26 to 55V primary source DC Full Chip VI Chip package enables surface mount, or a 6.5 to 13.8V secondary source to power a load. The DC low-impedance interconnect to system board bidirectional Sine Amplitude Converter isolates and transforms Contains built-in protection features against: voltage at a secondary:primary ratio of 1/4. The SAC offers a low AC impedance beyond the bandwidth of most downstream Overvoltage Lockout regulators therefore for a step-down conversion capacitance Overcurrent normally at the load can be located at the source to the Sine Short Circuit Amplitude Converter to enable a reduction in size of capacitors. Overtemperature Since the K factor of the VTM48EF120T025A0R is 1/4, the capacitance value on the primary side can be reduced by a Provides enable / disable control, factor of 16 in an application where the source is located on the internal temperature monitoring primary side, resulting in savings of board area, materials and total system cost. ZVS / ZCS resonant Sine Amplitude Converter topology The VTM48EF120T025A0R is provided in a VI Chip package Less than 50C temperature rise at full load compatible with standard pick-and-place and surface mount in typical applications assembly processes. The co-molded VI Chip package provides enhanced thermal management due to a large thermal interface Typical Applications area and superior thermal conductivity. The high conversion efficiency of the VTM48EF120T025A0R increases overall High-End Computing Systems system efficiency and lowers operating costs compared to conventional approaches. Automated Test Equipment The VTM48EF120T025A0R enables the utilization of Factorized High-Density Power Supplies Power Architecture which provides efficiency and size benefits by lowering conversion and distribution losses and promoting Communications Systems high-density point-of-load conversion. Typical Application Part Numbering Product Number Package Style (x) Product Grade (y) +IN +OUT Enable F = J-Lead T = 40 to 125C VTM48Ex120y025A0R PRM A T = Through hole M = 55 to 125C +PRI +SEC IN OUT For Storage and Operating Temperatures see General Characteristics Section VTM Battery +IN +OUT Enable PRI SEC PRM B IN OUT VTM Current Multiplier Rev 1.3 Page 1 of 20 06/2018VTM48Ex120y025A0R 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 MPRI Max Unit +PRI to PRI 1.0 60 V DC PC to PRI 0.3 20 V DC TM to PRI 0.3 7 V DC VC to PRI 0.3 20 V DC +PRI / PRI to +SEC / SEC (hipot) 2250 V DC +SEC to SEC 1.0 16 V DC Primary-Source 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 Primary Voltage Range V V PRI DC VC applied 0 55 V Slew Rate dV / dt 1 V / s PRI PRI Module latched shutdown, No external VC applied, V UV Turn Off V 24 26 V PRI PRI UV I = 25A SEC V = 48V 3 15.0 PRI V = 26 55V 17 PRI No Load Power Dissipation P W NL V = 48V, T = 25C 5.3 6.5 PRI C V = 26 55V, T = 25C 9 PRI C VC enable, V = 48V, C = 1000F, PRI SEC Inrush Current Peak I 10 20 A INRP R = 471m LOAD DC Primary Current I 7 A PRI DC Transfer Ratio K K = V / V , I = 0A 1/4 V / V SEC PRI SEC Secondary Voltage V V = V K I R V SEC SEC PRI SEC SEC Secondary Current (Average) I 25 A SEC AVG Secondary Current (Peak) I t < 10ms, I 25A 37.5 A SEC PK PEAK SEC AVG Secondary Power (Average) P I 25A 300 W SEC AVG SEC AVG V = 48V, I = 25A 95.0 96.0 PRI SEC Efficiency (Ambient) V = 26 55V, I = 25A 93.0 % AMB PRI SEC V = 48V, I = 12.5A 94.5 95.5 PRI SEC Efficiency (Hot) T % V = 48V, = 100C, I = 25A 94.5 95.6 HOT C PRI SEC Efficiency (Over Load Range) % 5A < I < 25A 80.0 20% SEC VTM Current Multiplier Rev 1.3 Page 2 of 20 06/2018