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BCM380P475T1K2A31 Datasheet(PDF) 9 Page - Vicor Corporation |
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BCM380P475T1K2A31 Datasheet(HTML) 9 Page - Vicor Corporation |
9 / 23 page BCM® Bus Converter Rev 1.4 vicorpower.com Page 9 of 23 05/2015 800 927.9474 BCM380y475x1K2A31 Signal Characteristics Specifications apply over all line, load conditions, unless otherwise noted; Boldface specifications apply over the temperature range of -40°C ≤ TINTERNAL ≤ 125°C (T-Grade); All other specifications are at TINTERNAL = 25ºC unless otherwise noted. UART SER-IN / SER-OUT Pins • Universal Asynchronous Receiver/Transmitter (UART) pins. • The BCM communication version is not intended to be used without a Digital Supervisor. • Isolated I2C communication and telemetry is available when using Vicor Digital Isolator and Vicor Digital Supervisor. Please see specific product data sheet for more details. • UART SER-IN pin is internally pulled high using a 1.5 kΩ to 3.3 V. SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN TYP MAX UNIT GENERAL I/O Regular Operation Baud Rate BRUART Rate 750 Kbit/s DIGITAL INPUT SER-IN Pin SER-IN Input Voltage Range VSER-IN_IH 2.3 V VSER-IN_IL 1 V SER-IN rise time tSER-IN_RISE 10% to 90% 400 ns SER-IN fall time tSER-IN_FALL 10% to 90% 25 ns SER-IN RPULLUP RSER-IN_PLP Pull up to 3.3 V 1.5 kΩ SER-IN External Capacitance CSER-IN_EXT 400 pF DIGITAL OUTPUT SER-OUT Pin SER-OUT Output Voltage Range VSER-OUT_OH 0 mA ≥ IOH ≥ -4 mA 2.8 V VSER-OUT_OL 0 mA ≤ IOL ≤ 4 mA 0.5 V SER-OUT rise time tSER-OUT_RISE 10% to 90% 55 ns SER-OUT fall time tSER-OUT_FALL 10% to 90% 45 ns SER-OUT source current ISER-OUT VSER-OUT = 2.8 V 6 mA SER-OUT output impedance ZSER-OUT 120 Ω Enable / Disable Control • The EN pin is a standard analog I/O configured as an input to an internal µC. • It is internally pulled high to 3.3 V. • When held low the BCM internal bias will be disabled and the powertrain will be inactive. • In an array of BCMs, EN pins should be interconnected to synchronize startup and permit startup into full load conditions. • Enable / disable command will have no effect if the EN pin is disabled. SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN TYP MAX UNIT ANALOG INPUT Startup EN to Powertrain active time tEN_START VIN > VIN_UVLO+, EN held low both conditions satisfied for t > tUVLO+_DELAY 250 µs Regular Operation EN Voltage Threshold VENABLE 2.3 V EN Resistance (Internal) REN_INT Internal pull up resistor 1.5 kΩ EN Disable Threshold VEN_DISABLE_TH 1 V |
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