MAX17595_13 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – Peak-Current-Mode Controllers for Flyback and Boost Regulators

EVALUATION KIT AVAILABLE
MAX17595/MAX17596/MAX17597
Peak-Current-Mode Controllers for
Flyback and Boost Regulators
General Description
The MAX17595/MAX17596/MAX17597 is a family of peak-
current-mode controllers for design of wide input-voltage
flyback and boost regulators. The MAX17595 offers
optimized input thresholds for universal input AC-DC
converters and telecom DC-DC (36V to 72V input range)
power supplies. The MAX17596/MAX17597 offer input
thresholds suitable for low-voltage DC-DC applications
(4.5V to 36V). The MAX17597 implements a boost con-
verter. All three controllers contain a built-in gate driver
for external n-channel MOSFETs.
The MAX17595/MAX17596/MAX17597 house
an internal error amplifier with 1% accurate ref-
erence, eliminating the need for an external
reference. The switching frequency is programmable
from 100kHz to 1MHz with an accuracy of 8% , allowing
optimization of magnetic and filter components, result-
ing in compact and cost-effective power conversion. For
EMI-sensitive applications, the MAX17595/MAX17596/
MAX17597 family incorporates a programmable frequen-
cy dithering scheme, enabling low-EMI spread-spectrum
operation.
Users can start the power supply precisely at the desired
input voltage, implement input overvoltage protection, and
program soft-start time. A programmable slope com-
pensation scheme is provided to ensuree stability of the
peak-current-mode control scheme.
Hiccup-mode overcurrent protection and thermal
shutdown are provided to minimize dissipation in
overcurrent and overtemperature fault conditions.
Applications
Universal Input Offline AC-DC Power Supplies
Wide-Range DC-Input Flyback/Boost Battery
Chargers
Battery-Powered Applications
Industrial, Telecom, and Automotive Applications
Benefits and Features
S Peak-Current-Mode Offline (Universal Input AC)
and Telecom (36V to 72V) Flyback Controller—
MAX17595
S Peak-Current-Mode DC-DC (4.5V to 36V) Flyback
Controller—MAX17596
S Peak-Current-Mode Nonsynchronous (4.5V to 36V)
Boost PWM Controller—MAX17597
S Current Mode Control Provides Excellent
Transient Response
S Low 20µA Startup Supply Current
S 100kHz to 1MHz Programmable Switching
Frequency with Optional Synchronization
S Programmable Frequency Dithering for Low-EMI
Spread-Spectrum Operation
S Adjustable Current Limit with External Current-
Sense Resistor
S Fast Cycle-By-Cycle Peak Current Limiting
S Hiccup-Mode Short-Circuit Protection
S Overtemperature Protection
S Programmable Soft-Start and Slope Compensation
S Input Overvoltage Protection
S Space-Saving, 3mm x 3mm TQFN Package
Ordering Information/Selector Guide appears at end of
data sheet.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX17595.related.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6178; Rev 2; 6/13