Summit Microelectronics Intros SMM150 Digital Power Supply
Summit Microelectronics Inc. (San Jose, CA) announced its new SMM150 digital power supply marginer that can easily be designed to work with either point-of-load (POL) dc-dc power modules or monolithic embedded dc-dc converters to improve the performance and reliability of enterprise server, data communications and telecommunications equipment through precision power subsystem control. The device trims the output voltage of the power supply to ±0.5% accuracy, and margins the output voltage above or below the nominal set-point from +300 mV to VDD.
The SMM150 is suitable for servers, switches, routers and base stations. The SMM150 uses a precise on-board reference, a 10-bit ADC and control loop to measure and control the output voltage of the dc-dc converter. When a margin/trim request is received, the SMM150 will adjust the trim pin or feedback pin of the converter, to provide the correct margined output voltage from +300 mV to VDD. During this period, the SMM150 controls the output voltage accurately to ±0.5% using Summit's Active DC Output Control (ADOC™) technology. The SMM150 can margin by either a remote I2C command, or by driving the margin up/down pins.
The SMM150 is programmed via the I2C bus to set margin high and low voltages, and the values are held in a non-volatile store on the device and are absolute values. The SMB150 operates directly from +2.7 V to +5.5 V, and the operating temperature range is +0 °C to +70 °C. It is available in a 5 mm x 5 mm QFN-28 package, and a 2.7 mm x 3.6 mm CSP package that are lead-free and RoHS-standard compliant.
Available now in production quantities, the device is priced at $2.60 for QFN-28 packaged units in quantities of 1,000 units (CSP package pricing available from factory).
