Datasheet

EXTSUP
VOUTA selected
VOUTB selected
A
EXTSUP
B A B
Setup www.ti.com
JP6 – EXTSUP is the jumper used to choose one of the Buck output voltages (VOUTA or VOUTB) to
provide the internal voltage VREG. If no jumper is plugged, VREG is generated from the input voltage.
Figure 7. EXTSUP Jumper Setting
Test Points
• DLYAB Power Good Delay for Buck Controller A and B
• DS Drain-Source Current Sense for Boost FET
• GND (x4) Ground
• PGA Power Good for Buck Controller A
• PGB Power Good for Buck Controller B
• PHA Buck Controller A phase pin
• PHB Buck Controller B phase pin
• SSA Soft Start for Buck Controller A
• SSB Soft Start for Buck Controller B
• VBAT Power Input before the boost regulator stage
• VIN Power Input after the boost regulator stage
• VOUTA Buck Controller A output
• VOUTB Buck Controller B output
2.2 Setup
The input voltage range for the converter is 2 V to 40 V. A load should be applied to the output terminal for
proper operation.
4
TPS4333xEVM SLVU457–April 2011
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