SNVU543A November   2016  – December 2016 LM5170 , LM5170-Q1

 

  1.   LM5170-Q1 EVM User Guide
    1.     Trademarks
    2. 1 Features and Electrical Performance
    3. 2 Setup
      1. 2.1 EVM Configurations
      2. 2.2 Bench Setup
      3. 2.3 Test Equipment
    4. 3 Test Procedure
      1. 3.1 Buck Mode Power-Up and Power-Down Sequence
      2. 3.2 Boost Mode Power-Up and Power-Down Sequence
      3. 3.3 Bidirectional Operation Power-Up and Power-Down Sequence
      4. 3.4 Operating the EVM With the Onboard Analog Loop Control Circuit
      5. 3.5 Operating the EVM With External MCU or Other Digital Circuit
    5. 4 Test Data
      1. 4.1  Efficiency
      2. 4.2  Current Regulation and Monitoring
      3. 4.3  Typical Master Enable Power Up and Shutdown
      4. 4.4  Channel Enable and Disable
      5. 4.5  Dual-Channel Interleaving Operation
      6. 4.6  ISETA Tracking
      7. 4.7  Diode Emulation Preventing Negative Currents
      8. 4.8  Dynamic DIR Change
      9. 4.9  Step Load Response
      10. 4.10 OVP
      11. 4.11 Output Short Circuit
    6. 5 Design Files
      1. 5.1 Schematics
      2. 5.2 Bill of Materials
      3. 5.3 Board Layout
  2.   Revision History

3.3 Bidirectional Operation Power-Up and Power-Down Sequence

  1. Refer to Table 2 through Table 5 for proper jumper settings.
  2. Turn on the HV-PS power supply and HV-E-Load.
  3. Turn on the HV-PS power supply and HV-E-Load.
  4. Apply a voltage > 2.5 V and < 6 V at J17-pin 5 (Master Enable).
  5. Apply the direction command (DIR) at J17-pin 9 or J18-pin 9.
  6. Apply an analog voltage gradually rising from 0 V to 1.5 V at J17-pin 11 or J18-pin 11 (ISETA), or a PWM signal of duty ratio of 0 to 48% at J17-pin 13 or J18-pin 13.
  7. Dynamically flip the DIR signal state between 0 (DIR < 1 V) and 1 (DIR > 2 V), the EVM will operate in dynamic bidirectional transition mode.
  8. Perform the test.
  9. After the tests are done, turn off the ISETA or ISETD signal, turn off the DIR signal, remove the voltage at J17-pin 5, and turn off the E-Load, HV-PS and LV-PS.