Datasheet

MCP19111

DS22331A-page 38  2013 Microchip Technology Inc.

6.3 Current Sense AC Gain

The current measured across the inductor is a square

wave that is averaged by the capacitor (C

) connected

between +I

SEN

and -I

SEN

. This very small voltage plus

the ripple can be amplified by the current sense AC

gain circuitry. The amount of gain is controlled by the

CSGSCON register.

U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x

— Reserved Reserved Reserved CSGS3 CSGS2 CSGS1 CSGS0

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7 Unimplemented: Read as ‘0’

bit 6-4 Reserved

bit 3-0 CSGS<3:0>: Current Sense AC Gain Setting bits

0000 = 0 dB

0001 = 1.0 dB

0010 = 2.5 dB

0011 = 4.0 dB

0100 = 5.5 dB

0101 = 7.0 dB

0110 = 8.5 dB

0111 = 10.0 dB

1000 = 11.5 dB

1001 = 13.0 dB

1010 = 14.5 dB

1011 = 16.0 dB

1100 = 17.5 dB

1101 = 19.0 dB

1110 = 20.5 dB

1111 = 22.0 dB