MAX17596
Peak-Current-Mode Controllers for Flyback and Boost Regulators
Enable Compact, Cost-Effective, and Highly Flexible Isolated/Nonisolated Power Supplies
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Key Features
Applications/Uses
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 36 |
| Topology | Flyback |
| Application (VIN) | Base Station (24V) Industrial (24V) |
| Control Loop | Current Mode |
| Feedback | Linear Opto |
| Switching Frequency (kHz) | 1000 |
| Duty Cycle (%) (max) | 48 |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TQFN-CU/16 |
| Budgetary Price (See Notes) | 0.98 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Peak-Current-Mode Controllers for Flyback and Boost Regulators | Jun 26, 2017 | |
| App Note | Designing Flyback Converters Using Peak-Current-Mode Controllers | ||
| User Guide | EE-SIM Design and Simulation Environment User Guide |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 36 |
| Topology | Flyback |
| Application (VIN) | Base Station (24V) Industrial (24V) |
| Control Loop | Current Mode |
| Feedback | Linear Opto |
| Switching Frequency (kHz) | 1000 |
| Duty Cycle (%) (max) | 48 |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TQFN-CU/16 |
| Budgetary Price (See Notes) | 0.98 |
Key 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
Applications/Uses
- Battery-Powered Applications
- Industrial and Telecom Applications
- Universal Input Offline AC-DC Power Supplies
- Wide-Range DC-Input Flyback/Boost Battery Chargers
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 converter. 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 reference, 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, resulting in compact and cost-effective power conversion. For EMI-sensitive applications, the MAX17595/MAX17596/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.
Technical Docs
| Data Sheet | Peak-Current-Mode Controllers for Flyback and Boost Regulators | Jun 26, 2017 | |
| App Note | Designing Flyback Converters Using Peak-Current-Mode Controllers | ||
| User Guide | EE-SIM Design and Simulation Environment User Guide |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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