X40030_13 Datasheet, PDF (10/23 Pages) Intersil Corporation – Triple Voltage Monitor with Integrated CPU Supervisor

X40030, X40031, X40034, X40035
V_TRIPX PROGRAMMING
NO
DESIRED
V_TRIPX<
PRESENT VALUE
YES
EXECUTE
V_TRIPX RESET SEQUENCE
NEW V_X APPLIED =
OLD V_X APPLIED + | ERROR |
NO
SET V_X = DESIRED V_TRIPX
EXECUTE
SET HIGHER V_X SEQUENCE
APPLY V_CC AND VOLTAGE
> DESIRED V_TRIPX TO V_X
DECREASE V_X
VX = V_CC, VXMON
NOTE: X = 1, 2, 3
LET: MDE = MAXIMUM DESIRED ERROR
MDE⁺
DESIRED VALUE
MDE^–
ACCEPTABLE
ERROR RANGE
ERROR = ACTUAL - DESIRED
NEW V_X APPLIED =
OLD V_X APPLIED - | ERROR |
EXECUTE RESET V_TRIPX
SEQUENCE
OUTPUT SWITCHES?
ERROR < MDE^–
YES
ACTUAL V_{TRIPX -}
DESIRED ^VTRIPX
ERROR > MDE⁺
| ERROR | < | MDE |
DONE
FIGURE 6. V_TRIPX SET/RESET SEQUENCE (X = 1, 2, 3)
10
FN8114.2
August 25, 2008