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BCM48BX040Y200B00 Datasheet(PDF) 12 Page - Vicor Corporation |
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BCM48BX040Y200B00 Datasheet(HTML) 12 Page - Vicor Corporation |
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12 / 20 page  BCM® Bus Converter Rev 1.3 vicorpower.com Page 12 of 20 08/2016 800 927.9474 BCM48Bx040y200B00 Using the Control Signals PC, TM Primary Control (PC) pin can be used to accomplish the following functions: n Logic enable and disable for module: Once TON1 time has been satisfied, a PC voltage greater than VPC_EN will cause the module to start. Bringing PC lower than VPC_DIS will cause the module to enter standby. n Auxiliary voltage source: Once enabled in regular operational conditions (no fault), each BCM module PC provides a regulated 5V, 3.5mA voltage source. n Synchronized start up: In an array of parallel modules, PC pins should be connected to synchronize start up across units. This permits the maximum load and capacitance to scale by the number of paralleled modules. n Output disable: PC pin can be actively pulled down in order to disable the module. Pull down impedance shall be lower than 60Ω. n Fault detection flag: The PC 5V voltage source is internally turned off as soon as a fault is detected. n Note that PC can not sink significant current during a fault condition. The PC pin of a faulted module will not cause interconnected PC pins of other modules to be disabled. Temperature Monitor (TM) pin provides a voltage proportional to the absolute temperature of the converter control IC. It can be used to accomplish the following functions: n Monitor the control IC temperature: The temperature in Kelvin is equal to the voltage on the TM pin scaled by 100. (i.e. 3.0V = 300K = 27ºC). If a heat sink is applied, TM can be used to protect the system thermally. n Fault detection flag: The TM voltage source is internally turned off as soon as a fault is detected. For system monitoring purposes microcontroller interface faults are detected on falling edges of TM signal. |
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