Traditionally, fuses and relays served all of those purposes, but they have many disadvantages like complicated wiring looms, sensitivity to vibration/temperature, and difficult diagnostics. All of these problems can be solved by using intelligent power management units (PMUs). Our newly developed PMU unit is at the forefront of technology. It provides 16 high current outputs (and use of multiple units if more outputs are required).
One of the main advantages of the PMU is continuous current sensing and self-resetting functionality if current exceeds the defined level. All output state, voltage and current information can be logged and transmitted via CAN bus to dash displays to inform drivers of potential problems. An additional advantage of the PMU system is the ability to define logic for controlling outputs. This is done with data from analogue input channels or CAN bus data, and math operations can be defined for each channel.
Temperature range AECQ100 GRADE1 (-40 to 125˚C) CPU 32 bits automotive, 90MIPS
Reverse polarity protection Yes, internal
Operating voltage 6-22V, immunity to transients according to ISO 7637
Enclosure IP 60, bespoke CNC machined aluminum
Size (mm) and weight(g) 131x112x32.5, 345g
Connectors 1 x 39 Automotive connector, 1 x M6 stud for battery connection
PC communication CAN (PCAN, ECUMASTER USBCAN)
High current outputs 10 x 25A(cont.), 6 x 15A(cont.) with Overcurrent and overheating protection. Outputs may be paired to increase continuous current capability. Current and voltage is measured for each output
Total current output 150A continuous
Output current control step 100mA
Dedicated output with wiper braking feature
Monitored 5V, 500mA output for powering external sensors.
Analog inputs 16 inputs, 10 Bit resolution, 0-5V (protected), with software selectable 10K Ohm pullup and pulldowns