Texas Instruments TPS65265, User Manual

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5 Power-Up Procedure
Power-up with dedicated enable pin:
1. Apply 4.5 V–17 V to J5
2. Toggle J6 , J7, or J8 to enable VOUT1, VOUT2, and VOUT3, respectively
3. Apply loads to the output connectors
Six bucks power sequence schemes with the pre-defined power up and power down sequence, shown in Table
5-1 .
1. Connect J9 to GND or high
2. Connect J6 to High(or Low), J7 to High(or Low)
3. Apply 4.5 V–18 V to J5
4. Toggle J8 to enable VOUT1, VOUT2, and VOUT3 (power up sequence shown in
Table 5-1 )
5. Apply loads to the output connectors
Table 5-1. Power Sequencing
Mode EN1 EN2 EN3 Start Sequencing Shutdown Sequencing
Low High High Used to start/stop bucks in
sequence buck1→buck2→buck3 Buck3→buck2→buck1
Low Low High Buck2→buck1→buck3 Buck3→buck1→buck2
Low High Low Buck2→buck3→buck1 Buck1→buck3→buck2
High High High Buck1→buck3→buck2 Buck2→buck3→buck1
High Low High Buck3→buck1→buck2 Buck2→buck1→buck3
High High Low Buck3→buck2→buck1 Buck1→buck2→buck3
High/Low Low Low Reserved Reserved Reserved
www.ti.com Power-Up Procedure
SLVUAK9A – DECEMBER 2015 – REVISED MAY 2021
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TPS65265 Buck Converter Evaluation Module User's Guide 9
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