Not Recommended for New Designs VTM Current Multiplier V048x060y040A S CUNRTLS High Efficiency, Sine Amplitude Converter FEATURES DESCRIPTION The VI Chip current multiplier is a high efficiency (>96%) 48 Vdc to 6 Vdc 40 A current multiplier Sine Amplitude Converter (SAC) operating from a - Operating from standard 48 V or 24 V PRM Regulators 26 to 55 Vdc primary bus to deliver an isolated output. The High efficiency (>96%) reduces system power Sine Amplitude Converter offers a low AC impedance beyond consumption the bandwidth of most downstream regulators therefore capacitance normally at the load can be located at the input to 3 High density (136 A/in ) the Sine Amplitude Converter. Since the K factor of the Full Chip VI Chip package enables surface mount, V048x060y040A is 1/8, the capacitance value can be reduced low impedance interconnect to system board by a factor of 64, resulting in savings of board area, materials and total system cost. Contains built-in protection features against: - Overvoltage Lockout The V048x060y040A is provided in a VI Chip package compatible with standard pick-and-place and surface mount - Overcurrent assembly processes. The co-molded VI Chip package provides - Short Circuit enhanced thermal management due to a large thermal - Overtemperature interface area and superior thermal conductivity. The high Provides enable / disable control, conversion efficiency of the V048x060y040A increases overall internal temperature monitoring system efficiency and lowers operating costs compared to ZVS / ZCS resonant Sine Amplitude Converter topology conventional approaches. The V048x060y040A enables the utilization of Factorized Less than 50C temperature rise at full load Power Architecture which provides efficiency and size in typical applications benefits by lowering conversion and distribution losses and promoting high density point of load conversion. TYPICAL APPLICATIONS High End Computing Systems V = 26 to 55 V I = 40 A (NOM) IN OUT Automated Test Equipment V = 3.3 to 6.9 V(NO LOAD) K = 1/8 OUT High Density Power Supplies PART NUMBERING Communications Systems PART NUMBER PACKAGE STYLE PRODUCT GRADE F = J-Lead T = -40 to 125C y V048 x 060 040 T = Through hole M = -55 to 125C For Storage and Operating Temperatures see Section 6.0 General Characteristics TYPICAL APPLICATION Regulator Voltage Transformer VC TM PR SG VC OS PC PC CD L TM IL (See Application Note AN:024) VTM PRM O Transformer Regulator A +In +Out +In +Out D V IN -In -Out -In -Out TM Factorized Power Architecture VTM Current Multiplier Rev 1.0 vicorpower.com 800 927.9474 Page 1 of 18 01/2014 ANot Recommended for New Designs V048x060y040A 1.0 ABSOLUTE MAXIMUM VOLTAGE RATINGS The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device. MIN MAX UNIT MIN MAX UNIT + IN to - IN . -1.0 60 V VC to - IN -0.3 20 V DC DC PC to - IN -0.3 20 V + IN / - IN to + OUT / - OUT (hipot) . 2250 V DC DC TM to -IN -0.3 7V + OUT to - OUT....................................... -1.0 12 V DC DC 2.0 ELECTRICAL CHARACTERISTICS Specifications apply over all line and load conditions unless otherwise noted Boldface specifications apply over the temperature range of -40C < T < 125 C (T-Grade) All other specifications are at T = 25C unless otherwise noted. J J ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN TYP MAX UNIT 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, V UV turn off V 24 26 V IN IN UV No external VC applied, I = 40A OUT V = 48 V 0.9 7.3 IN V = 26 V to 55 V 8.4 IN No Load power dissipation P W NL V = 48 V, T = 25 C 2.7 3.5 IN C V = 26 V to 55 V, T = 2 C 5.5 IN C VC enable, V = 48 V, C = 4000 F, IN OUT Inrush current peak I 12 25 A INRP R = 144 m LOAD DC input current I 5.5 A IN DC Transfer ratio K K = V /V , I = 0 A 1/8 V/V OUT IN OUT Output voltage V V = V K - I R , Section 11 V OUT OUT IN OUT OUT Output current (average) I 40 A OUT AVG Output current (peak) I T < 10 ms, I 40 A 60 A OUT PK PEAK OUT AVG Output power (average) P I 40 A W 264 OUT AVG OUT AVG V = 48 V, I = 40 A 94.0 94.7 IN OUT V = 26 V to 55 V, I = 40 A 89.3 Efficiency (ambient) hAMB % IN OUT V = 48 V, I = 20 A 94.8 95.6 IN OUT h Efficiency (hot) V = 48 V, T = 100C, I = 40 A % 92.8 94.5 HOT IN C OUT h Efficiency (over load range) 8 A < I < 40 A 87.5 % 20% OUT R T = -40C, I = 40 A m Output resistance (cold) 2.5 4.5 5.9 OUT COLD C OUT Output resistance (ambient) R T = 25C, I = 40 A 3.8 5.8 7.1 m OUT AMB C OUT Output resistance (hot) R T = 100C, I = 40 A 4.5 6.5 9.0 m OUT HOT C OUT Switching frequency F 1.10 1.21 1.30 MHz SW Output ripple frequency F 2.20 2.42 2.60 MHz SW RP C = 0 F, I = 40 A, V = 48 V, OUT OUT IN Output voltage ripple V 145 275 mV OUT PP 20 MHz BW, Section 12 Frequency up to 30 MHz, Output inductance (parasitic) L 600 pH OUT PAR Simulated J-lead model Output capacitance (internal) C Effective Value at6V 45 F OUT INT OUT VTM Standalone Operation. Output capacitance (external) C 4000 F OUT EXT V pre-applied, VC enable IN PROTECTION Overvoltage lockout V Module latched shutdown 55.1 58.5 60.0 V IN OVLO+ Overvoltage lockout T Effective internal RC filter 8 s OVLO response time constant Output overcurrent trip I 47 60 80 A OCP Short circuit protection trip current I 80 A SCP Output overcurrent T Effective internal RC filter (Integrative). 7.7 ms OCP response time constant From detection to cessation Short circuit protection response time T 1 s SCP of switching (Instantaneous) Thermal shutdown setpoint T 125 130 135 C J OTP Reverse inrush current protection Reverse Inrush protection disabled for this product. VTM Current Multiplier Rev 1.0 vicorpower.com 800 927.9474 Page 2 of 18 01/2014