IRCS2277S

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Current - Output: -
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Voltage - Input: -
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Manufacturer: International Rectifier


Features:

• 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




Application

(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.

Description

The IRCS2277S demo board is an evaluation board for IR2277S current sensor (see device data sheet for details). CS2277S 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 of the IRCS2277S 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 areprovided as open collector outputs. Board layout has been studied to reduce noise coupling between high and low voltage signals.