VTM Current Multiplier VTM48EF015T115A00 S CUNRTLS C US High Efficiency, Sine Amplitude Converter FEATURES DESCRIPTION The VI Chip current multiplier is a high efficiency (>94%) Sine 48 Vdc to 1.5 Vdc 115 A current multiplier Amplitude Converter (SAC) operating from a 26 to 55 Vdc - Operating from standard 48 V or 24 V PRMregulators primary bus to deliver an isolated output. The Sine Amplitude High efficiency (>94%) reduces system power Converter offers a low AC impedance beyond the bandwidth consumption of most downstream regulators therefore capacitance normally 3 at the load can be located at the input to the Sine Amplitude High density (392 A/in ) Converter. Since the K factor of the VTM48EF015T115A00 is Full Chip VI Chip package enables surface mount, 1/32, the capacitance value can be reduced by a factor of 1024, low impedance interconnect to system board resulting in savings of board area, materials and total system cost. Contains built-in protection features against: The VTM48EF015T115A00 is provided in a VI Chip package - Overvoltage compatible with standard pick-and-place and surface mount assembly processes. The co-molded VI Chip package provides - Overcurrent enhanced thermal management due to a large thermal Provides enable / disable control, interface area and superior thermal conductivity. The high internal temperature monitoring conversion efficiency of the VTM48EF015T115A00 increases overall system efficiency and lowers operating costs compared ZVS / ZCS resonant Sine Amplitude Converter topology to conventional approaches. Less than 50 C temperature rise at full load The VTM48EF015T115A00 enables the utilization of Factorized in typical applications Power Architecture which provides efficiency and size benefits by lowering conversion and distribution losses and TYPICAL APPLICATIONS promoting high density point of load conversion. High End Computing Systems (NOM) V = 26 to 55 V I = 115 A IN OUT Automated Test Equipment (NO LOAD) V = 0.8 to 1.7 V K = 1/32 OUT High Density Power Supplies Communications Systems PART NUMBER DESCRIPTION VTM48EF015T115A00 -40C to 125C T J TYPICAL APPLICATION Voltage Control Feedback Enable/ Disable Voltage Reference PC PR TM PC +IN +OUT +IN +OUT1 +OUT2 TM VTM48EF015T115A00 PRM 38 to 55 Vdc Input Regulator Load -IN -OUT -IN -OUT1 IF RE SG VC VC -OUT2 PC Current +IN +OUT1 +OUT2 VTM48EF015T1 15A00 Sense -IN Constant -OUT1 VC -OUT2 Vc VTM Current Multiplier Rev 3.5 vicorpower.com 800 927.9474 Page 1 of 17 09/2015VTM48EF015T115A00 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 IM to - IN......................................................... 0 3.15 V DC DC PC to - IN -0.3 20 V + IN / - IN to + OUT / - OUT (hipot)................ 1500 V DC DC TM to -IN -0.3 7 V + IN / - IN to + OUT / - OUT (working)........... 60 V DC DC VC to - IN -0.3 20 V + OUT to - OUT............................................... -1.0 5.5 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 < 125C (T-Grade) All other specifications are at T = 25 C 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 055 V slew rate dV /dt 1 V/s IN IN Module latched shutdown, V UV turn off V 18 26 V IN IN UV No external VC applied, I = 115A OUT V = 48 V 1.5 5.8 IN V = 26 V to 55 V 6.5 IN No Load power dissipation P W NL V = 48 V, T = 25 C 2.2 4.2 IN C V = 26 V to 55 V, T = 25 C 5.5 IN C VC enable, V = 48 V, C = 64400 F, IN OUT Inrush current peak I 7.2 11 A INRP R = 12 m LOAD DC input current I 4.5 A IN DC Transfer ratio K K = V /V , I = 0 A 1/32 V/V OUT IN OUT Output voltage V V = V K - I R , Section 11 V OUT OUT IN OUT OUT 30C < T < 100C, c 115 Output current (average) I Iout max = - (3/14) * Tc + 136.43 A OUT AVG T = 30 C 130 C Output current (peak) I T < 10 ms, I 115 A 200 A OUT PK PEAK OUT AVG Output power (average) P I 115 A 185 W OUT AVG OUT AVG V = 48 V, I = 115 A 90.0 91.7 IN OUT V = 26 V to 55 V, I = 115 A 84.0 IN OUT Efficiency (ambient) h % AMB V = 48 V, I = 57.5 A 91.5 94.0 IN OUT V = 48 V, I = 130 A 89.5 90.9 IN OUT h Efficiency (hot) V = 48 V, T = 100C, I = 115 A 89.0 90.7 % HOT IN C OUT h Efficiency (over load range) 23 A < I < 115 A 80 % 20% OUT Output resistance (cold) R T = -40C, I = 115 A 0.35 0.67 1.0 m OUT COLD C OUT Output resistance (ambient) R T = 25C, I = 115 A 0.50 0.84 1.08 m OUT AMB C OUT Output resistance (hot) R T = 100C, I = 115 A 0.64 1.00 1.18 m OUT HOT C OUT Switching frequency F 1.30 1.40 1.50 MHz SW Output ripple frequency F 2.60 2.80 3.00 MHz SW RP C = 0 F, I = 115 A, V = 48 V, OUT OUT IN Output voltage ripple V 150 200 mV OUT PP 20 MHz BW, Section 11 Frequency up to 30 MHz, Output inductance (parasitic) L 150 pH OUT PAR Simulated J-lead model Output capacitance (internal) C Effective Value at 1.5 V 420 F OUT INT OUT VTM Standalone Operation. Output capacitance (external) COUT 64400 F V pre-applied, VC enable IN PROTECTION Overvoltage lockout V Module latched shutdown 55.1 58.2 60 V IN OVLO+ Overvoltage lockout T Effective internal RC filter 0.2 s OVLO response time constant Output overcurrent trip I 138 190 250 A OCP Short circuit protection trip current I 250 A SCP Output overcurrent T Effective internal RC filter (Integrative). 9.1 ms OCP response time constant From detection to cessation Short circuit protection response time T 1s SCP of switching (Instantaneous) Thermal shutdown setpoint T 125 130 135 C J OTP Reverse inrush current protection Reverse Inrush protection enabled for this product VTM Current Multiplier Rev 3.5 vicorpower.com 800 927.9474 Page 2 of 17 09/2015