Analog Devices Inc. MAX15159 Multiphase Boost/Flyback Controllers

Analog Devices Inc. MAX15159 Multiphase Boost/Flyback Controllers are high-voltage devices with enhanced low-side MOSFET gate driver capability supporting 120kHz to 1MHz switching frequencies. MAX15159 supports single-phase or dual-phase boost/flyback configurations. Two devices can be stacked up for triple-phase or quad-phase operation. The output voltage can be dynamically set through a 1.5V to 2.2V reference input (REFIN) for modular design support. The switching frequency is controlled by an external resistor setting the internal oscillator or by synchronizing the regulator to an external clock.

Features

Wide operating range
- 8V to 120V input voltage range for boost and flyback configurations, -8V to -120V input voltage range for inverting buck-boost configurations
- Single-/dual-/triple-/quad-phase operation
- 120kHz to 1MHz switching frequency range
- -40ºC to +125ºC temperature range
Robust fault protection improves reliability
- Adjustable input undervoltage lockout (UVLO)
- Adjustable cycle-by-cycle peak current limit and fast overcurrent protection (OCP)
- Thermal shutdown

Integration reduces design footprint
- Feedback sample and hold to support no-opto feedback in an isolated flyback converter
- Low-side MOSFET driver integrated
- Multiphase synchronization and interleaved operation
- Active phase current balance control

Applications

Communications
Industrial

Multiphase flyback
IEEE802.3bt powered devices

Analog Devices Inc. MAX15159 Multiphase Boost/Flyback Controllers

Features

Applications

Simplified Application Diagram

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