Rainbow Electronics MAX1585 - Manual (Page 14)

MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
14 ______________________________________________________________________________________
PVSU
2.35V
1V
ONSU
ONSU
OSC
V REF
INTERNAL
POWER-OK
REFOK
100,000
CLOCK CYCLE
FAULT TIMER
FAULT
IN
CLK
REF
150ns
ONE-SHOT
CCSU
FBSU
CCSD
FBSD
ONSD
STEP-UP
SOFT-START
DONE (SUSSD)
SOFT-START
RAMP
GENERATOR TO
V
REF
TO
V
REF
SOFT-START
RAMP GENERATOR
SUSSD
FLTALL
TO AUX_
CHANNELS
(SEE FIGURE 3)
FAULT
CURRENT-MODE
DC-DC
STEP-DOWN
SDOK
SCF
PGSD
LXSD
PVSD
ONSU
PGSU
LXSU
PVSU
GND
REF
PV
FLTALL
FAULT
CURRENT-MODE
DC-DC
STEP-UP
1.25V
REFERENCE
TO INTERNAL
POWER
STARTUP
OSCILLATOR
NORMAL
MODE
OVER
TEMP
FLTALL
MAX1584/
MAX1585
Figure 2. MAX1584/MAX1585 Functional Diagram