IRCS2277S Datasheet, PDF (1/20 Pages) International Rectifier – IRCS2277S Demo Board

Data Sheet rev 0.2
IRCS2277S
IRCS2277S Demo Board
For 3-phase / 380V motor drives
IRCS2277S Demo Board
• Up to 1200V DC-bus capability
• IR2277S device connected for 3-phase
current sensing
• Open drain PWM output (PO)
• Open drain Over Current output (OC)
• Ratiometric analog output for A/D
converters compatibility
• On-board disconnectable 5V reference
• On-board bootstrap supply for high-side
gate drive
• Same board can host IR2177S or
IR22771S or IR21771S, in place of
IR2277S
Stacked boards compatibility
• Connectable on top of IRMD2214SS and
IRMD22141SS demo boards
• Connectable on top of IRMD22381Q demo
board
IRCS2277S Demo Board
(Shown above not including IRMD22381Q demo board)
Introduction
The IRCS2277S demo board is an evaluation board for IR2277S current sensor (see device data sheet for details).
IRCS2277S is designed to read 3-phase motor currents on top of pin-out compatible gate driver boards. The board can
be used for both AC and Brushless motors current sensing by reading the voltage developed on shunt resistors. The
board is a flexible solution for different applications and can be customized by means reconfigurable components
options. Three-phase shunt resistor (with sensing pins) must be placed in the gate driver board. Both PWM and
ratiometric analog outputs are provided for all of the three phases. Both PWM output and Over Current signal are
provided as open collector outputs. Board layout has been studied to reduce noise coupling between high and low
voltage signals.
Application Block Diagram
(Refer to connections section to see
interface pins) This diagram shows
the main blocks and connections of
the demo board and the external
components necessary in a typical
motor drive application.
www.irf.com
page 1/20
May 5^th, 2005