Datasheet

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Table 1. Hardware Components
Component Description
Input Power DC power supply from plug pack. 20 V is preferred but 16-22-V supply can be used as well (8-22 V @
Light Loads, 16-40 V @Full Load and 16-22 V for all loads).
SW1 (Main Pwr) SW1 - Master power switch for entire EVM
SW2 (DC Bus) SW2 - Power switch for Vin to buck stages only. When off the F2808 DIMM controller card will still
operate (next to the DC bus switch is a resettable fuse)
H-bridge High frequency MOSFET driver including bootstrap diode and H-bridge MOSFET
Feedback Cct-I Shunt regulator and optocoupler based isolated feedback circuit for variable and constant output voltage
regulation
Feedback Cct-II Linear optocoupler based isolated feedback circuit for variable and constant output voltage regulation
Active Load Software controlled switched load (load needs to be connected to the terminals or populated on the
board)
Inrush Current Sensing A simple circuit to sense approximate primary side current for various types of protections and burst
Cct mode
On-board Emulator XDS100, USB / JTAG emulator
SCI-Comm Serial communications UART (connects to an optional GUI, not used in lab exercises)
J1 If a jumper is placed on J1 the F2808/F28044 MCU boots from SCI when power is applied. If not placed,
the F2808/F28044 boots from FLASH.
J3 If a jumper is placed on J3 the F28335, MCU boots from SCI when power is applied. If not placed the
F28335 boots from FLASH.
J5 On-board emulation enable/disable jumper. If a jumper is placed on J5, the on-board emulator is
disabled allowing an external JTAG emulator to be used on the board.
Resonant DC/DC Developer’s Kit Overview4 SPRUGM1 – January 2009
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