Texas Instruments TPS26600-02EVM, Руководство пользователя, Страница: 13 / 24

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General Configurations
13 SLVUAV3A – August 2016 – Revised February 2017
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TPS26600-02EVM: Evaluation Module for TPS2660x
4.4.6 Reverse Polarity Test
Follow the instructions to verify the reverse polarity protection feature of the device:
1. Set up the oscilloscope as listed in Table 12 .
Table 12. TPS26600-02EVM Reverse Polarity Test
Oscilloscope Setting CH1 Probe Points CH2 Probe Points
Channel 1 = 10 V / div VOUT1 (TP3) VOUT2 (TP12)
Channel 2 = 10 V / div VIN1 (TP2) VIN2 (TP11)
Trigger source = Channel 1
Trigger level = –12 V ±1 V
Trigger polarity = Falling
Trigger mode = Single
Time base 10 ms / div
2. Set the power supply voltage to 24 V and disable the power supply.
3. Cve terminal of the power supply to either T1/T3 –ve terminal, connect –ve terminal of the
power supply to either T1/T3 +ve terminal.
4. Enable the power supply and verify the reverse polarity protection waveform as shown in Figure 9 .
Figure 9. Reverse Polarity Protection
4.4.7 Instructions to Evaluate the TPS26602
1. Replace either U1 or U2 with the TPS26602PWP or the TPS26602RHF on respective channels.
2. Install jumper on J7/J14 to connect the OVP pin to RTN.
3. Follow the similar test procedure as TPS26600 for evaluation.
4.4.8 Instructions to Evaluate the TPS26601
1. Replace U2 with the TPS26601RHF.
2. Make sure all jumpers are set according to default jumper settings.
3. Follow the similar test procedure as TPS26600 for evaluation.