VTM Current Multiplier VTM48Ex040y050B0R S CUNRTL S High Efficiency, Bi-directional, Sine Amplitude Converter Features & Benefits Description The VI Chip bi-directional current multiplier is a Sine Amplitude 48V to 4V 50A bi-directional current multiplier DC DC Converter (SAC) operating from a 26 to 55V primary DC Can power a load connected to either the primary or source or a 2.2 to 4.6V secondary source to power a load. The DC secondary side bi-directional Sine Amplitude Converter isolates and transforms voltage at a secondary:primary ratio of 1/12. The SAC offers a High efficiency (>94%) reduces system power low AC impedance beyond the bandwidth of most downstream consumption regulators therefore for a step-down conversion capacitance 3 normally at the load can be located at the source to the Sine High density (170A/in ) Amplitude Converter to enable a reduction in size of capacitors. Full Chip VI Chip package enables surface mount, Since the K factor of the VTM48EF040T050B0R is 1/12, the low impedance interconnect to system board capacitance value on the primary side can be reduced by a factor of 144 in an application where the source is located on the primary Contains built-in protection features against: side, resulting in savings of board area, materials and total n Overvoltage Lockout system cost. n Overcurrent The VTM48EF040T050B0R is provided in a VI Chip package n Short Circuit compatible with standard pick-and-place and surface mount n Overtemperature assembly processes. The co-molded VI Chip package provides Provides enable/disable control, enhanced thermal management due to a large thermal interface area and superior thermal conductivity. The high conversion internal temperature monitoring efficiency of the VTM48EF040T050B0R increases overall system ZVS/ZCS resonant Sine Amplitude Converter topology efficiency and lowers operating costs compared to conventional approaches. Less than 50C temperature rise at full load in typical applications The VTM48EF040T050B0R enables the utilization of Factorized Power Architecture which provides efficiency and size benefits by lowering conversion and distribution losses and promoting high Typical Applications density point of load conversion. High End Computing Systems Product Ratings Automated Test Equipment V = 26 55V I = 50A PRI SEC (NOM) High Density Power Supplies V = 2.2 4.6V (no load ) K = 1/12 SEC Communications Systems Part Numbering Typical Application Product Number Package Style Product Grade +IN +OUT F = J-Lead T = -40 to 125C Enable VTM48Ex040y050B0R PRM A T = Through hole M = -55 to 125C -IN -OUT +PRI +SEC For Storage and Operating Temperatures see General Characteristics Section VTM Battery +IN +OUT -PRI -SEC Enable PRM B -OUT -IN VTM Current Multiplier Rev 1.3 vicorpower.com Page 1 of 21 11/2016 800 927.9474VTM48Ex040y050B0R 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 +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 -0.5 40 V DC Primary Source Electrical Specifications Specifications apply over all line and load conditions when power is sourced from the primary side, 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 A t t rib u t e Symbol Conditions / Notes Min Typ Max Unit 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, V UV turn off V 24 26 V PRI PRI UV No external VC applied, I = 50A OUT V = 48V 1.5 10 PRI V = 26V to 55V 12 PRI No Load power dissipation P W NL V = 48V, T = 25C 4.7 6.3 PRI C V = 26V to 55V, T = 25C 8 PRI C VC enable, V = 48V, C = 9100F, PRI SEC Inrush current peak I 10 20 A INRP R = 78m LOAD DC input current I 4.5 A PRI DC Transfer ratio K K = V / V , I = 0A 1/12 V / V SEC PRI SEC Secondary voltage V V = V K I R , See Page 13 V SEC SEC PRI SEC SEC Secondary current (average) I 54 A SEC AVG 75 Secondary current (peak) I t < 10ms, I 50A A SEC PK PEAK OUT AVG Secondary power (average) P I 50A 248 W OUT AVG SEC AVG V = 48V, I = 50A 93.1 94.0 PRI SEC Efficiency (ambient) h V = 26V to 55V, I = 50A 90.2 % PRI SEC AMB V = 48V, I = 25A 92.4 93.5 PRI SEC VTM Current Multiplier Rev 1.3 vicorpower.com Page 2 of 21 11/2016 800 927.9474