MIC28510YJL Adjustable Synchronous Buck Regulator

75 V, 4 A Hyper Speed Control™ Synchronous DC/DC Buck Regulator

Image of Micrel's MIC28510YJL Adjustable Synchronous Buck RegulatorThe SuperSwitcher II™ family features Microchip's Hyper Speed Control™, delivering ultra-fast transient response and minimizing output capacitance, while achieving highest power density. The MIC28510 is a wide-input, synchronous switching regulator IC that provides step-down conversion with better than 94 percent peak efficiency. With an input voltage as high as 75 V and a maximum output current of 4 A, the solution eliminates the need for a costly dual-stage conversion approach for point-of-load applications. The MIC28510 delivers up to 100 W of power in a 13cm2 device.

The MIC28510 integrates low-RDSON, high and low-side power switches to provide a highly efficient output down to 0.8 V. The MIC28510 is also Any Capacitor™ stable, independent of output ESR, thus solving the stability problem power supply designers faced with distributed output capacitance.

By combining an exceptionally wide input voltage range, superior stability and transient response with innovative packaging the chip ensures the best power density and thermal performance across the entire load range. The solution delivers unprecedented performance and flexibility, placing the MIC28510 in the sweet spot for designers tackling the industry’s most demanding applications.

Features
  • Hyper Speed Control™ architecture enables:
    • High Delta V Operation (VIN = 75 V and VOUT = 0.8 V)
    • Small output capacitance
  • 4.5 V to 75 V voltage input
  • 4 A output current capability, with up to 95% efficiency
  • Adjustable output down to 0.8 V
  • +1% FB accuracy
  • 100 kHz to 500 kHz switching frequency
  • Any Capacitor™ stable
    • Zero-ESR to high-ESR output capacitors
  • Internal compensation
  • Foldback current-limit and “hiccup” mode short-circuit protection
  • Thermal shutdown
  • Supports safe startup into a pre-biased load
  • -40°C to +125°C junction temperature range
  • 28-pin, 5 mm x 6 mm MLF® package
Applications
  • Base stations
  • Power-over-Ethernet
  • Home security systems
  • Solar inverters

MIC28510YJL Adj Buck Regulator

ImageManufacturer Part NumberDescriptionAvailable Quantity
MIC28510YJL-TR datasheet linkIC REG BUCK ADJ 4A SYNC 28MLFMIC28510YJL-TRIC REG BUCK ADJ 4A SYNC 28MLF997 - Immediate
MIC28510YJL-TR product page link
MIC28510-12V-EV datasheet linkBOARD EVAL FOR MIC28510 12VMIC28510-12V-EVBOARD EVAL FOR MIC28510 12V0MIC28510-12V-EV product page link
MIC28510-5V-EV datasheet linkBOARD EVAL FOR MIC28510 5VMIC28510-5V-EVBOARD EVAL FOR MIC28510 5V0MIC28510-5V-EV product page link
Published: 2013-07-02