MICROCHIP ARD00777

The MIC45212 is a synchronous, step-down regulator module, featuring a unique adaptive ON-time control architecture. The module incorporates a DC-to-DC controller, power MOSFETs, bootstrap diode, bootstrap capacitor and an inductor in a single package, simplifying the design and layout process for the end user. This highly integrated solution expedites system design and improves product time-to-market. The internal MOSFETs and inductor are optimized to achieve high efficiency at a low output voltage. The fully optimized design can deliver up to 14A current under a wide input voltage range of 4.5V to 26V, without requiring additional cooling. The MIC45212-1 uses the HyperLight Load (HLL) while the MIC45212-2 uses the Hyper Speed Control (HSC) architecture, which enables ultra-fast load transient response, allowing for a reduction of output capacitance. The MIC45212 offers 1% output accuracy that can be adjusted from 0.8V to 0.85*VIN with two external resistors. Additional features include thermal shutdown protection, input undervoltage lockout, adjustable current limit and short-circuit protection. The MIC45212 allows for safe start-up into a pre-biased output.

• No Compensation Required
• Up to 14A Output Current

• 93% Peak Efficiency

• Output Voltage: 0.8V to 0.85*VIN with ±1% Accuracy
• Adjustable Switching Frequency from 200kHz to 600kHz
• Enable Input and Open-Drain Power Good Output
• Hyper Speed Control (MIC45212-2) Architecture enables Fast Transient Response
• HyperLight Load (MIC45212-1) improves Light Load Efficiency
• Supports Safe Start-up into Pre-Biased Output
• -40℃ to +125℃ Junction Temperature Range
• Thermal Shutdown Protection
• Short-Circuit Protection with Hiccup mode
• Adjustable Current Limit
• Available in 64-Pin 12mmx12mmx4mm QFN Package

• High-Power Density Point-of-Load Conversion
• Servers, Routers, Networking, and Base Stations
• FPGAs, DSP and Low-Voltage ASIC Power Supplies
• Industrial and Medical Equipment