Where is the boost converter in Cypress PSOC 5LP CY8CKIT-059 Prototyping kit?
It isn't available.

The target part on that board has the capability to act as a boost converter, but is not connected as one -- the IND pin is not connected, and the VBAT and VBOOST pins are wired to VSS. This disables the boost converter, making it unusable on this board.

The intended implementation for the boost converter is shown on page 12 of the PSoC BoostConv reference.