µPDM4

The Mectric Micro PDM4 is a smart 4 channel power distribution module designed to replace mechanical relays and fuses in aftermarket automotive electrical circuits. The device is fully CAN supported allowing for seamless integration with other devices. Each of the 4 outputs can supply up to 15A continuous load current. Higher loads can be driven by grouping outputs together. Each outputs can be triggered by CAN or a switch input and an optional master ignition switch input. The µPDM4 is constructed from AEC-Q100 Automotive Grade components, ensuring it's reliability in harsh environments.

In applications where installers may need to add a small number of power circuits but don't require the size, cost or complexity of a full scale PDM. The Micro PDM4 is perfect for coupling with new engine harness builds or when adding a new set of fans or pumps to a vehicle.

Features

Processing Features

• 48 MHz, 32bit Automotive Processor
• Controller Area Network (CAN) interface, up to 4 Mbit/s
• Compatible with CAN 2.0A/B and CAN-FD (ISO 11898-1:2015)
• Full output control via CAN
• Accepts changes to config over CAN
• Voltage, current & status info transmitted over CAN

Applications

• Resistive or inductive loads
• EFI relay
• ECU, DBW, Coil, Injector supplies
• Fuel pumps
• Water pumps
• Thermo fans
• Vehicle lighting

Outputs

Output Channel Features

• 4x Output Channels
• 15A Continuous load current per channel (connector pin rating limited)
• 65A Inrush load current per channel
• 65A total device continuous current
• Low frequency PWM capable (up to 200Hz)
• Soft start capable, duty cycle and time programmable
• Over current protection, CAN programmable
• Over temperature protection
• Over voltage protection
• Under voltage shutdown
• Short to ground protection
• Reverse battery protection
• Automatic circuit retry, CAN programmable
• Configurable 5V supply output (shared with Input 5)

Inputs

Input Channel Features

• 5x General Purpose Inputs
  
• Digital logic on each input
• 0-20V measurement on each input
• Configurable 4K7 pullups to 5V0 on each input
• High impedance inputs
• Frequency measurement capable
• Configurable input active levels

Physical

Physical Features

• 12 Pin Deutsch DT Connector
• M6 Power supply stud terminal
• CNC machined billet aluminium case
• Moisture/dust resistant sealed case
• M5 mounting holes
• Fully automotive grade device
• Operating temperature: -40 - 105 °C

Programming

CAN Based Programming

The µPDM4 is fully capable of real time configuration and firmware updates over CAN Bus. This is done using a range of supported USB to CAN adapters and our MectiCal calibration software

Direct CAN Control

The  μPDM4 includes a range of predefined CAN control frames that allow devices such as ECU's or Display Dash's to directly control the outputs without the need for any physical switch inputs.

Direct control frames allow direct override of:

• Output enable
• Output duty & frequency
• Output current limits & retries
• Output enable in 16 bit LSB format compatible with Emtron Tx Datasets

Simplified CAN Programming

To greatly improve the flexibility of the μPDM4, we've included a set of easy to use CAN frames to program specific features. Any device capable of sending a CAN frame such as CAN analysers, ECU's, and Display Dash's can use these frames. Changes made using these frames are stored to permanent memory and as such they only need to be sent once. 

Simplified programming includes:

• Output current limits
• Output retries & retry delay
• Output soft start duty & ramp time
• Output max duty
• Output frequency
• Input pin configuration
• Input switch logic & latching
• Output control logic
• CAN base address & auto speed detection

See the product datasheet for detailed information.