CY8CKIT-059 datasheet(31/140 Pages) INFINEON

31 / 140 page

Document Number: 001-84932 Rev. *N

Page 30 of 139

PSoC® 5LP: CY8C58LP Family

Datasheet

Figure 6-6. Application of Boost Converter powering PSoC device

The boost converter may also generate a supply that is not used

directly by the PSoC device. An example of this use case is

boosting a 1.8 V supply to 4.0 V to drive a white LED. If the boost

converter is not supplying the PSoC devices VDDA, VDDD, and

VDDIO it must comply with the same design rules as supplying

the PSoC device, but with a change to the bulk capacitor

requirements. A parallel arrangement 22 µF, 1.0 µF, and 0.1 µF

capacitors are all required on the Vout supply and must be

placed within 1 cm of the VBOOST pin to ensure regulator

stability.

Figure 6-7. Application of Boost Converter not powering PSoC device

VBOOST

VBAT

VSSB

IND

VDDD

VDDA

VDDIO0

VSSA

VSSD

Boost

Logic

VDDIO1

VDDIO2

VDDIO3

0.1 µF

22 µF

0.1 µF

1.0 µF

22 µF

4.7 µH

10 µH

22 µH

Schottky, 1A

VDDD

0.1 µF

1.0 µF

All components and values are required

0.5–3.6 V

PSoC

External

Load

VBOOST

VBAT

VSSB

IND

VDDD

VDDA

VDDIO0

VSSA

VSSD

Boost

Logic

VDDIO1

VDDIO2

VDDIO3

22 µF

4.7 µH

10 µH

22 µH

Schottky, 1A

VDDD

All components and values are required

0.5–3.6 V

22 µF

0.1 µF

1.0 µF

VDDA, VDDD, and

VDDIO connections

per section 6.2

Power System.

VOUT

PSoC

External

Load

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