IRCS2277S datasheet(5/20 Pages) IRF

5 / 20 page

Data Sheet rev 0.2

IRCS2277S

www.irf.com

page

5/20

May 5

th, 2005

VRL, VRH, OUTU, OUTV, OUTW

VRL and VRH inputs are the reference voltages for the OUTx analog output of the current sensors.

VRL is the low voltage rail for OUTx and it is connected to VSS by a 0 Ohm resistor. VRH is the high voltage

rail for OUTx and it is connected to a linear 5V regulator by a 0Ohm resistor.

Both VRH and VRL can be disconnected to the respective supplies (VSS and 5V regulator) in order to be

supplied by the controller board.

OUTx are directly connected to the IR2277S devices output.

Note: further information about IR2277S I/Os are described in details in IR2277S data sheet.

VCC supply pin

This is the supply pin for all the devices. On board a green LED indicates the supply power on; Figure 2b

shows the connection.

Figure 2: LED connection

VSS ground pin (GND)

When stacked together, the board ground is shared among the stack. Gate drivers board share the VSS with

DC- (power ground) with a star connection on DC-.

15V

VSS

10k

OCx

10k

(a)

(b)

Green

Yellow

IRCS2277S Scheda tecnica(PDF) 5 Page - International Rectifier