Rainbow Electronics MAX1718 - Manual (Page 13)

MAX1718
Notebook CPU Step-Down Controller for Intel
Mobile Voltage Positioning (IMVP-II)
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REF
-10%
FROM
D/A
REF
REF
FB
OVP
ZMODE TIME
10k
ERROR
AMP
TOFF
TON
REF
+10%
NEG
R-2R
D/A CONVERTER
CHIP SUPPLY
g m g m
CC
POS
VGATE
D0 D1 D2 D3 S1 SUS S0 D4
ON-TIME
COMPUTE
TON
1-SHOT
1-SHOT
TRIG
V BATT
2V TO 28V
TRIG
Q
Q
S
R
2V
REF
REF
FB
GND
5V
OUTPUT
DL
V CC
V DD
LX
ZERO CROSSING
CURRENT
LIMIT
DH
BST
I LIM
REF
5V
5V
Q
OVP/UVP
DETECT
SKP/SDN
TON
V+
70k Ω
Σ
MAX1718
S
R
Q
MUXES AND SLEW CONTROL
9
1
Figure 2. Functional Diagram