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Power Management System

Hardware Milestone: 0. Software Milestone: 0. Requirements: Interface with the existing bicycle battery voltage (35-40V typical) Provide stable, well-regulated power to each EBM subsystem Automatic shutdown at low voltage level (35V) Additional Aspirations:

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Power Management System

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  1. Hardware Milestone: 0 Software Milestone: 0 • Requirements: • Interface with the existing bicycle battery voltage (35-40V typical) • Provide stable, well-regulated power to each EBM subsystem • Automatic shutdown at low voltage level (35V) • Additional Aspirations: • Avoid wasting battery power with high efficiency design • Minimize complexity • Objectives: • Identify all voltage/current needs from subsystems • Identify subsystem I/O software requirements • Develop “Power Budget” and battery charge life • Research specific solutions and identify component candidates • Design and model hardware schematic • Alpha test under laboratory conditions • Integrate into EBM subsystems and measure performance Power Management System

  2. Hardware Milestone: 0 Software Milestone: 0 Power Management System • Specific power supply parts have not yet been selected pending other subsystem part selection

  3. Hardware Milestone: 0 Software Milestone: 0 Solution being implemented: A mix of DC-DC Buck Converter and LDO Linear Regulators • Requirements from top level: • Step down 35-40V main battery voltage to first subsystem voltage level • Needs from other subsystems: • MCU • Low voltage shutdown command Power Management System Requirements from other subsystems, “Power Budget”:

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