MAX17595EVKIT# Maxim Integrated, MAX17595EVKIT# Datasheet - Page 10

• Manufacturer Part Number: MAX17595EVKIT#
• Description: Power Management IC Development Tools MAX17595 Eval Kit
• Manufacturer: Maxim Integrated

Specifications of MAX17595EVKIT#

• Rohs: yes

The MAX17595 offers a bootstrap UVLO wake-up level
of 20V with a wide hysteresis, and is optimized for imple-
menting isolated and nonisolated universal (85V to 265V
AC) offline single-switch flyback converter or telecom
(36V to 72V) power supplies. The MAX17596/MAX17597
offer a UVLO wake-up level of 4.4V and are well-suited
for low-voltage DC-DC flyback/boost power supplies. An
internal 1% reference (1.21V) can be used to regulate
the output in nonisolated flyback and boost applications.
Additional semiregulated outputs, if needed, can be gen-
erated by using additional secondary windings on the
flyback converter transformer.
The MAX17595/MAX17596/MAX17597 family utilizes
peak-current-mode control and external compensation
for optimizing closed-loop performance. The devices
include cycle-by-cycle peak current limit, and eight
consecutive occurrences of current-limit-event trigger
hiccup mode, which protects external components by
halting switching for a period of 32,768 cycles. .
The
mum
components are rated suitably and the maximum
operating voltages of the MAX17595 are respected.
Maxim Integrated
PIN
13
14
15
16
—
MAX17595
input
EN/UVLO
voltage,
NAME
V
OVI
V
DRV
EP
IN
has
Input Voltage Range ( V
Detailed Description
as
no
Linear Regulator Output and Driver Input. Connect a 1µF bypass capacitor from V
close as possible to the IC.
Internal V
a 1FF minimum ceramic capacitor.
Enable/Undervoltage Lockout. To externally program the UVLO threshold of the input supply,
connect a resistive divider between input supply, EN, and SGND.
Overvoltage Comparator Input. Connect a resistive divider between the input supply, OVI, and
SGND to set the input overvoltage threshold.
Exposed Pad
long
limitation
DRV
as
Peak-Current-Mode Controllers for
Regulator Input. Connect V
MAX17595/MAX17596/MAX17597
the
on
external
Flyback and Boost Regulators
maxi-
IN
)
The MAX17595 implements a rising and falling UVLO
threshold that allows it to be successfully used in univer-
sal input (85V to 265V AC) rectified bus applications, in
rectified 3-phase DC bus applications, and in telecom
(36V to 72V DC) applications.
The MAX17596/MAX17597 are intended to implement
flyback (isolated and nonisolated) and boost convert-
ers. The V
maximum operating voltage of 36V. The MAX17596/
MAX17597 implement rising and falling thresholds on
the V
typical of low-voltage DC-DC applications, down to
an input voltage of 4.5V DC. Therefore, flyback /boost
converters with a 4.5V to 36V supply voltage range can
be implemented with the MAX17596/MAX17597.
The internal functions and driver circuits are designed
to operate from 7.4V (MAX17595) or 5V (MAX17596/
MAX17597) power-supply voltages. The MAX17595/
MAX17596/MAX17597 family has an internal linear regu-
lator that is powered from the V
linear regulator is connected to the V
be decoupled with a 1FF capacitor to ground for stable
operation. The V
ating current of the MAX17595/MAX17596/MAX17597.
The maximum operating voltage on the V
the MAX17595, and 36V for the MAX17596/MAX17597.
IN
IN
FUNCTION
to the input voltage source. Bypass V
pin that assume power-supply startup schemes
IN
Pin Description (continued)
pin of the MAX17596/MAX17597 has a
Internal Linear Regulator (V
DRV
regulator output supplies all the oper-
IN
pin. The output of the
DRV
IN
DRV
IN
pin, and should
to PGND with
pin is 29V for
to SGND as
DRV
10
)