Maxim Integrated Products has introduced the MAX17497, a one-chip solution for all the power requirements on the communications and metrology boards in smart meters.
A high level of integration eases design, adds flexibility, increases accuracy, improves reliability, and lowers the total solution cost and footprint. This single power regulator is designed for smart meter/smart grid applications as well as factory automation.
The MAX17497 integrates the control circuitry required for the universal-input (85V to 265V), non-isolated flyback power supplies. It adds a secondary-side synchronous buck regulator with integrated MOSFETs.
All these integrated functions support the supplies for a powerline communication (PLC) driver or RF transceiver, the PLC/RF modem (2.5V/3.3V), a circuit-breaker relay, and the tightly regulated supplies for the sensitive metrology and application system on chips (SoCs).
Designed to operate at 250kHz/500kHz, the flyback regulator avoids the frequencies used in smart meter communications and thus mitigates frequency interference and delivers robust performance. The high-flyback-regulator and secondary buck-regulator frequency allows for optimization of the magnetic and filter components in the smart meter.
The MAX17497 fits in a small, 3mm x 3mm TQFN package. It operates over the -40ºC to +125ºC temperature range and
Pricing: Start at $1.45 (1000-up, FOB USA).
Datasheet: Click here.