1 / 15

PowerBench Programmable Power Supply Final presentation – part A March 20 th , 2009

PowerBench Programmable Power Supply Final presentation – part A March 20 th , 2009. Gregory Kaplan Dmitry Babin Supervisor: Boaz Mizrahi. Project Overview. A versatile power supply unit with multiple outputs for laboratory use and testing of various electronic devices. Key features.

jacoba
Download Presentation

PowerBench Programmable Power Supply Final presentation – part A March 20 th , 2009

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PowerBenchProgrammable Power SupplyFinal presentation – part AMarch 20th, 2009 Gregory Kaplan Dmitry Babin Supervisor: Boaz Mizrahi

  2. Project Overview A versatile power supply unit with multiple outputs for laboratory use and testing of various electronic devices.

  3. Key features • Programmable source/sink/meter operation • Up to 4 independent channels • Two-way communication with a PC • Portable design • Modularity

  4. Portability features • Compact and lightweight case • USB interface • Sink and meter functions can operate from battery power

  5. Modular design • Configuration can be selected according to client needs: • 2 or 4 channels (with or w/o negative channel) • USB2.0 FS (12Mbit/s) or HS (480Mbit/s) • FPGA upgrade path exists • Can function without battery

  6. High-level overview D U T Power supply Control unit Measurement unit Active load User interface for standalone operation LEDs LCD Keys

  7. Specifications • Source operation • Output voltage: 0.9 to 12.6 V • Output current: 0 to 3.5 A • Programming resolution: < 5 mV • Ripple and noise: < 20 mV peak-to-peak • Settling time: < 1 ms • Programmable current limits • Load operation • Input current: 0 to 3.5 A • Programming resolution: < 5 mA • Settling time: < 0.5 µs • Meter capabilities • Bipolar voltage precision: < 5 mV (5 MHz bandwidth) • Bidirectional current precision: < 5 mA (1 MHz bandwidth)

  8. Expected performance – LDO • An example of the simulated transient response of the LDO circuit is shown below: • Output voltage step: 1V to 12.6V (with load current of 3.5A) • DUT input capacitance: 0μF, 10μF, 100μF, 1000μF • Lead inductance of 0.5μH and lead+contact resistance of 100mΩ (each lead) • Worst-case overshoot: ~ 120mV (~ 1%) • Settling time: <1ms to within 5mV

  9. Expected performance – load • An example of the simulated transient response of the active load circuit is shown below: • Load current step: 1A with a rise/fall time of 500ns (2MHz) • DUT voltage: 12.6V • Overshoot: 95mA • Settling time: 300ns to within 5% • Assumed lead inductance of 0.5uH and lead+contact resistance of 150mOhm

  10. Current status • 1st board (“digital”): • Local power supplies • USB comm. using chip vendor’s software • MCU in-circuit programming • FPGA configuration through JTAG and from the on-board SPI FLASH • Simple test firmware runs in all 3 chips • Misc. periphery to be tested: • Temperature monitoring chip • Real-time clock

  11. Current status • 2nd board (“analog”): • Assembled and will be tested as soon as sufficient firmware support is available

  12. Current status • 3rd board (“panel”): • Basic features not requiring firmware support • More thorough tests will be done as soon as sufficient firmware support is available

  13. Short-term roadmap • Establish a stable and comfortable working environment: • (Re)program any chip directly from PC (inprogress) • Use the LCD and keyboard as a debug console • Start development of the functional firmware and software, and use it to test the “analog” board

  14. Questions ?¿

  15. Statistics 1 project 2 partners 3 boards 17 months ~60 breakfasts at Zoran 129 different electronic components 612 Mb in project folder 996 nets 1221 total parts ~2200 man-hours 4017 solder pads

More Related