MAX5014
Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies
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Overview
Features and Benefits
- Wide Input Range: (18V to 110V) or (13V to 36V)
- Current-Mode Control
- Leading-Edge Blanking
- Internally Trimmed 275kHz ±10% Oscillator
- Low External Component Count
- Soft-Start
- High-Voltage Startup Circuit
- Pulse-by-Pulse Current Limiting
- Thermal Shutdown
- SO-8 Package
Product Details
The MAX5014/MAX5015 integrate all the building blocks necessary for implementing DC-DC fixed-frequency isolated power supplies. These devices are current-mode controllers with an integrated high-voltage startup circuit suitable for isolated telecom/industrial voltage range power supplies. Current-mode control with leading-edge blanking simplifies control-loop design and internal ramp compensation circuitry stabilizes the current loop when operating at duty cycles above 50% (MAX5014). The MAX5014 allows 85% operating duty cycle and could be used to implement flyback converters, whereas the MAX5015 limits the operating duty cycle to less than 50% and can be used in single-ended forward converters. A high-voltage startup circuit allows these devices to draw power directly from the 18V to 110V input supply during startup. The switching frequency is internally trimmed to 275kHz ±10%, thus reducing magnetics and filter component costs.
The MAX5014/MAX5015 are available in 8-pin SO packages. An evaluation kit (MAX5015EVKIT) is also available.
Warning: The MAX5014/MAX5015 are designed to operate with high voltages. Exercise caution.
Applications
- Industrial Power Supplies
- Isolated Power Supplies
- Networking Power Supplies
- Telecom Power Supplies
Product Categories
Product Lifecycle
Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
