Specifications

40 Maxim Industrial Solutions
Programmable logic controllers (PLCs)
Isolated power-supply functions
Benefits
• Simplifies design by supporting high-
load currents
• Cut costs by eliminating external
hot-swap controller and switch
MAX5069
The MAX5069 is a high-frequency, current-mode PWM controller
with dual MOSFET drivers. The IC integrates everything necessary
for implementing AC-DC or DC-DC fixed-frequency power supplies.
Isolated or nonisolated, push-pull and half-/full-bridge power
supplies are easily constructed using either primary- or secondary-
side regulation. An input undervoltage lockout (UVLO) programs the
input-supply startup voltage and ensures proper operation during
brownout conditions. The MAX5069 operates at over 100W.
Reduce system downtime with current-mode PWM controller with integrated
hot-swap
IN
UVLO/EN
NDRVA
NDRVB
V
CC
FB
CS
PGNDAGND
REG5
FLTINT
RT
DT
SCOMP
COMP
HYST
R1
C1
C2
C3
C4
R2
R3
R4
C5
R6
R7
R5
R8
V
OUT
V
IN
Q2
Q1
C6
R
HYST
C7
C8
R9
C10
MAX8515
R13
R14
PS2913
V
CC
R10
R11
R12
MAX5069B
Secondary-side, regulated, isolated power supply. The dashed line encompasses both functions of the optoisolator.