Rainbow Electronics MAX8707 - Manual (Page 20)

MAX8707
Multiphase, Fixed-Frequency Controller for
AMD Hammer CPU Core Power Supplies
20 ______________________________________________________________________________________
Figure 2. MAX8707 Functional Diagram
MAX8707
R-TO-I
CONVERTER
TRC
G M(VPS)
G M(TRC)
CRSP
CRSN
ILIM(PK)
R-TO-I
CONVERTER
VPS
DROOP
CCV
LOAD-TRANSIENT
DETECT COMPARATOR
TRAN
SUSV
DAC
TARGET
FAULT
(UVP + THERMAL)
VROK
PGOOD AND
FAULT DETECT
CSN_
CSP_
ERROR
AMP
SUS
UVLO
REFOK
RUN
REF
GND
V CC
REF
(2.0V)
FAULT
D4
D3
D2
D1
D0
DECODER
REF
TRC
CLAMP
ILIM(AVE)
CURRENT-
LIMIT
COMPARATOR
25mV
160 µS
REF
CHANGE
A = 10
PHASE ENABLE
DETECT
EA[4:1]
PWM_
PGND
4-PHASE
FIXED-FREQ
CURRENT-MODE
PWM LOGIC
SUS
SKIP
DRSKP
RUN
C SLEW
TARGET
WINDOW
COMPARATOR
CHANGE
OSC
OSCILLATOR
FBS
x 4
G M
G
M
GNDS
OFS
TIME
TARGET
SUS
x 4
INTEGRATOR
AMP
VPS
500k Ω
SKIP
SHDN