Micrel Expands Hyper Speed Control Family Of Synchronous DC-DC Controllers

Micrel’s unique Hyper Speed ControlTM architecture significantly reduces the required output capacitance and allows for excellent transient response, while making high delta-V operation (VIN=28V, VOUT=0.8V) possible. The solution is ideal for set-top boxes, gateways, routers, computer peripherals, and applications with low voltage distributed power requirements. The MIC2166 is currently available in volume quantities with pricing starting at $0.93 for 1K.

“A host of customer friendly features such as internal 5V VDD regulator and PowerGood output, combined with Micrel’s unique Hyper Speed ControlTM architecture, offer terrific benefits such as reduced BOM cost and world class transient response,” stated Doyle Slack, director of analog marketing, Micrel. “The MIC2166 is Any CapacitorTM stable – stability is maintained from zero ESR to high ESR, thereby allowing a great degree of flexibility for the designer.”

The MIC2166 operates at 600 kHz switching frequency, operates over a supply range of 4.5V to 28V and can be used to provide up to 25A of output current. The device achieves up to 95 percent efficiency, while still switching at high frequencies over a broad load range. An UVLO feature is provided to ensure proper operation under power-sag conditions which prevents the external power MOSFET from overheating. A digital soft start feature is included to reduce the inrush current. Short Current Sensing on the Bottom MOSFET with hiccup ensures protection in case of output short circuit. The MIC2166 includes an enable (EN) input to shutdown the converter and a Power Good output that allows simple sequencing. The device is stable with any output capacitor (zero to high ESR). The MIC2166 is available in a 10-pin ePad MSOP package with a junction operating range from –40 ºC to +125 ºC.