EVALUATION KIT AVAILABLE
MAX17595/MAX17596/
MAX17597
Peak-Current-Mode Controllers
for Flyback and Boost Regulators
General Description
Benefits and Features
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.TheMAX17596/MAX17597offerinputthresholds
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.
● 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
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.
• 3mm x 3mm TQFN Package
● Programmable Frequency Dithering Enables Low-
EMI Spread-Spectrum Operation
● Integrated Protection Features Enhance System
Reliability
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.
• Adjustable Current Limit with External Current-
Sense Resistor
• Fast Cycle-By-Cycle Peak Current Limiting
• Hiccup-Mode Short-Circuit Protection
• Overtemperature Protection
Hiccup-mode overcurrent protection and thermal
shutdown are provided to minimize dissipation in
overcurrent and overtemperature fault conditions.
• Programmable Soft-Start and Slope Compensation
• Input Overvoltage Protection
Ordering Information/Selector Guide appears at end of
data sheet.
Applications
● Universal Input Offline AC-DC Power Supplies
● Wide-Range DC-Input Flyback/Boost Battery Chargers
● Battery-Powered Applications
● Industrial and Telecom Applications
19-6178; Rev 5; 5/17