Maxim MAX17290/MAX17292 PWM Boost Controllers
Maxim MAX17290/MAX17292 PWM Boost Controllers are high-efficiency, synchronous step-up DC-DC controllers that operate over a 4.5V to 36V input voltage range with 42V input transient protection. The input operating range can be extended to as low as 2.5V in Bootstrapped mode. The MAX17290 and MAX17292 use a constant-frequency, pulse-width modulating (PWM), peak current-mode control architecture. These devices are offered with a wide variety of functions. Those functions include one or more of the following functions: a synchronization output (SYNCO) for 180° out-of-phase operation, an overvoltage protection function using a separate input pin (OVP), and a reference input pin (REFIN) to allow on-the-fly output voltage adjustment. The MAX17290 and MAX17292 operate in different frequency ranges. All versions can be synchronized to an external master clock using the FSET/SYNC input.
Features
Reduces Solution Size and Cost
All-Ceramic Capacitor Solution Allows Ultra-Compact Solution Size
100kHz to 1MHz (MAX17290) and 1MHz to 2.5MHz (MAX17292) Switching-Frequency with External Synchronization
Increases Design Flexibility
Bootstrapped Mode Allows Input Voltage to be 2.5V
Adjustable Slope Compensation
Reduces Power Dissipation
>90% Peak Efficiency
Low 4μA (typ.) Shutdown Current
Operates Reliably
42V Input Voltage Transient Protection
Fixed 9ms Internal Software Start Reduces Input Inrush Current
PGOOD Output and Hiccup Mode for Enhanced System Protection
Overtemperature Shutdown
Reduced EMI Emission with Spread-Spectrum Control
Applications
Distributed Supply Regulation
General-Purpose Point-of-Load
Offline Power Supplies
Telecom Hardware
Functional Diagram
Functional Diagram
Maxim MAX17290EVKIT & MAX14292EVKIT Evaluation Kits are fully assembled and tested PCBs that are designed to evaluate the MAX17290 or MAX14292 devices. Each evaluation kit contains a 16W DC-DC boost converter for battery-operated, harsh environment, front-end pre-boost applications. The converter included in the kit integrates a low-side FET driver and current-mode, control loop circuitry for output-voltage regulation, making it ideal for boost or SEPIC converters. Each evaluation kit can be synchronized with an external clock source within the 100kHz to 1MHz (MAX17290EVKIT) range or 1MHz to 2.5MHz (MAX17292EVKIT) range.
