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TPS40322

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SLUSAF8E – JULY 2011 – REVISED JANUARY 2016

8.2.2 Two-Phase, Single Output Configuration from 12-V nominal to 1.2-V DC-to-DC Converter Using the TPS40322

Figure 29 shows the schematic, waveforms, and components for a two-phase, single output synchronous buck converter using the TPS40322 controller.

The design goal parameters are given in Table 7.

Table 6 summaries the channel 2 related pin connection in two-phase mode.

Figure 29. Design Example 2, Two-Phase Converter Schematic

Table 6. Channel 2 Pin Connections in Two-Phase Mode

PIN NAME

CONNECTION

COMP2

Connect to COMP1

EN2/SS2/GSNS

Use as GSNS pin, connect to the output ground

FB2

Connect to BP6

ILIM2/VSNS

Use as VSNS pin, connect to output

PG2

Floating or connect to ground

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