MAX17595_15 Datasheet, PDF (1/22 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–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 converter. All three
controllers contain a built-in gate driver for external
n-channel MOSFETs.
The MAX17595–MAX17597 house an internal error amplifier
with 1% accurate reference, eliminating the need for an
external reference. The switching frequency is programma-
ble from 100kHz to 1MHz with an accuracy of 8%, allow-
ing optimization of magnetic and filter components, resulting
in compact and cost-effective power conversion. For
EMI-sensitive applications, the MAX17595–MAX17597
family incorporates a programmable frequency 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 compensation
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 and Telecom Applications
Benefits and Features
●● Programmable Switching Frequency Allows
Optimization of the Magnetic and Filter Components,
Resulting in Compact, Cost-Effective, Efficient
Isolated/Non-Isolated Power Supplies
• 100kHz to 1MHz Programmable Switching
Frequency with Optional Synchronization
• Peak Current Mode Control Provides Excellent
Transient Response
-- Offline (Universal Input AC) and Telecom (36V to 72V)
Flyback Controller—MAX17595
-- DC-DC (4.5V to 36V) Flyback Controller—
MAX17596
-- Nonsynchronous (4.5V to 36V) Boost PWM
Controller—MAX17597
• 3mm x 3mm TQFN Package
●● Programmable Frequency Dithering Enables Low-
EMI Spread-Spectrum Operation
●● Integrated Protection Features Enhance System
Reliability
• Adjustable Current Limit with External Current-
Sense Resistor
• Fast Cycle-By-Cycle Peak Current Limiting
• Hiccup-Mode Short-Circuit Protection
• Overtemperature Protection
• Programmable Soft-Start and Slope Compensation
• Input Overvoltage Protection
Ordering Information/Selector Guide appears at end of
data sheet.
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 4; 5/15