Not Recommended for New Designs BCM48B x 040 y 200A00 PRELIMINARY DATASHEET BCM S Bus Converter C NRTL US C US FEATURES DESCRIPTION The V I Chip bus converter is a high efficiency (>94%) Sine 48 Vdc 4 Vdc 200 W Bus Converter Amplitude Converter (SAC) operating from a 38 to 55 Vdc High efficiency (>94%) reduces system primary bus to deliver an isolated, unregulated 3.2 to 4.6 power consumption output. The Sine Amplitude Converter offers a low AC impedance beyond the bandwidth of most downstream 3 High power density (>681 W/in ) regulators therefore capacitance normally at the load can be reduces power system footprint by >40% located at the input to the Sine Amplitude Converter. Since the Contains built-in protection features: transformation ratio of the BCM48BF040T200A00 is 1/12, the - Undervoltage capacitance value can be reduced by a factor of 144x, resulting - Overvoltage Lockout in savings of board area, materials and total system cost. - Overcurrent Protection The BCM48BF040T200A00 is provided in a V I Chip package - Short circuit Protection compatible with standard pick-and-place and surface mount assembly processes. The co-molded V I Chip package provides - Overtemperature Protection 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 BCM48BF040T200A00 increases overall system efficiency and lowers operating costs compared Can be paralleled to create multi-kW arrays to conventional approaches. TYPICAL APPLICATIONS PART NUMBERING High End Computing Systems PART NUMBER PACKAGE STYLE PRODUCT GRADE Automated Test Equipment F = J-Lead T = -40 to 125C BCM48B x 040 y 200A00 High Density Power Supplies T = Through hole M = -55 to 125C For Storage and Operating Temperatures see Section 6.0 General Characteristics Communications Systems TYPICAL APPLICATION PC enable / disable TM L switch TM BCM SW1 O Bus Converter F1 A +In +Out V D IN -In -Out Rev. 1.1 VI CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200 7/2011 Page 1 of 18 vicorpower.com Not Recommended for New Designs PRELIMINARY DATASHEET BCM48B x 040 y 200A00 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 60 V Output current average -2 53 A VIN slew rate (operational) . -1 1 V/ PC to IN -0.3 20 V s Isolation voltage, input to output 2250 V TM to IN . -0.3 7 V +OUT to OUT . -1 10 V Operating IC junction temperature -40 125 C Output current transient Storage temperature -40 125 C (< = 10 ms, < = 10% DC) -3 75 A 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 < 100C (T-Grade) All other specifications are at T = 25C unless otherwise noted. C C ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN TYP MAX UNIT POWERTRAIN Input voltage range, continuous V 38 55 V IN DC Full current or power supported, 50 ms max, 38 Input voltage range, transient V 55 V IN TRANS 10% duty cycle max Quiescent current I Disabled, PC Low 0.5 1.0 mA Q V to V time T V = 48 V, PC floating 450 650 800 ms IN OUT ON1 IN V = 48 V, T = 25C 4.9 6.3 IN C V = 48 V 1.5 10.0 IN No load power dissipation P W NL V = 38 V to 55 V, T = 25C 8 IN C V = 38 V to 55 V 12 IN Worse case of: V = 55 V, C = 9100 F, IN OUT Inrush current peak I INR P 10 20 A R = 73 m LOAD DC input current I At P = 200 W 5 A IN DC OUT Transformation ratio K K = V /V , at no load 1/12 V/V OUT IN Output power (average) P 200 W OUT AVG Output power (peak) POUT PK 10 ms max, POUT AVG 200 W 300 W Output current (average) I 53 A OUT AVG Output current (peak) I 10 ms max, I 53 A 75 A OUT PK OUT AVG V = 48 V, I = 50 A T = 25C 93.5 94.5 IN OUT c Efficiency (ambient) V = 38 V to 55 V, I = 50 A T = 25C 90.5 AMB IN OUT c % V = 48 V, I = 25 A T = 25C 92.5 93.6 IN OUT c Efficiency (hot) V = 48 V, I = 50 A T = 100C 93.4 94.4 % HOT IN OUT c Efficiency (over load range) 10 A < I < 50 A 80.5 % 20% OUT R I = 50 A, T = -40C 1.5 1.75 2.2 m OUT COLD OUT c Output resistance R I = 50 A, T = 25C 1.8 2.2 2.7 m OUT AMB OUT c R I = 50 A, T = 100C 2.3 2.6 3.1 m OUT HOT OUT C Switching frequency F 1.36 1.43 1.50 MHz SW C = 0 F, I = 50 A, V = 48 V, OUT OUT IN Output voltage ripple V 216 350 mV OUT PP 20 MHz BW, Section 10 Frequency up to 30 MHz, Output inductance (parasitic) L 600 pH OUT PAR Simulated J-lead model Output capacitance (internal) C Effective value at 4 V 200 F OUT INT OUT Output capacitance (external) C 0 9100 F OUT EXT Rev. 1.1 VI CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200 7/2011 Page 2 of 18 vicorpower.com