Texas Instruments UCC21220EVM-009, Руководство пользователя

Страница: 9 / 21

www.ti.com
Power Up and Power Down Procedure
9 SLUUBS2A – November 2017 – Revised December 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
UCC21220EVM-009
5 Power Up and Power Down Procedure
5.1 Power Up
1. Before preceding with the power up test procedure, ensure that the steps in Section 4.2.6 are
complete. Figure 3 can be used as a reference.
2. Enable power supply 1.
3. Enable power supplies 2 and 3. The quiescent current on DMM1 and DMM2 should be approximately
1 mA to 3 mA if everything is set correctly.
4. Enable the function generator outputs.
5. Verify that the following occurs:
1. Stable pulse output appears on channel 1 and channel 2 in the oscilloscope, see Figure 3 .
2. Oscilloscope frequency measurement matches programmed function generator frequency.
3. DMM1 and DMM2 currents should read 14 ± 2 mA under no load conditions. For more information
about the operating current, see the UCC21220 4-A/6-A, Dual Channel Isolated Gate Driver data
sheet.
Figure 3. Example Input and Output Waveforms (Inputs: CH1 and CH2, Outputs: CH3 and CH4)