Lattice Semiconductor, a service-driven developer of innovative, low-cost, low power programmable design solutions, has announced power management solutions that will significantly simplify and increase the reliability of power failure protection circuitry in solid state drives (SSD).
Power failure protection circuitry prevents data loss by using the on-board hold-up capacitor to provide supplemental power during the critical period when data is fully saved into the Flash memory. Traditionally, these circuits use either a super capacitor or a tantalum capacitor bank, along with a voltage boost converter, to store the energy.
The company’s innovative Lattice Power Manager II device simplifies and lessens the cost of power failure protection circuitry by integrating the charging and power switchover circuit of the hold-up capacitor. Regarding tantalum hold-up capacitor applications, it eradicates the need for a voltage boost converter. The power failure circuitry implemented through the Power Manager II device can be used across a range of solid state drive architectures.
The Power Manager II device enables the integration of super capacitor or tantalum capacitor charging and switchover, hot swap control, power fail interrupt, and sequencing. The device’s precision voltage monitoring has 0.7% accuracy, a fast response of 48 microseconds and on-chip CPLD, significantly improving the reliability of the power failure protection circuitry in an SSD. Faster system response, voltage doubler, capacitor voltage monitor, and control circuitry reduce the amount of capacitance needed to provide backup power during a power outage.
Lattice’s programmable Power Manager II family is comprised of six devices that can monitor and control as many as 12 power supplies. Within the Power Manager II family, the low-power POWR607 device is ideally suited for portable SSD architectures, controlling up to six supplies and incorporating two high-voltage MOSFET drivers. The POWR1014 and POWR1220 devices are suited for enterprise or PCIe SSD architectures. The POWR1220 device is capable of managing up to 12 voltages and driving 4 N-Channel MOSFETs for the most demanding SSD architectures. This device consists of a programmable threshold, precision differential input comparator block with an accuracy of 0.7%, a 48-macrocell CPLD, programmable hardware timers, a 10-bit analog to digital converter, and a trim block for trimming and margining supplies.
All of Lattice’s programmable mixed-signal product families are supported by development kits and reference designs that enable product development that is fast and easy.
Lattice Semiconductor is a service-driven developer of advanced low-cost, low power programmable design solutions. The company’s FPGA, CPLD and programmable power management devices help customers unlock their innovation.
For more information, visit the company’s Web site at www.latticesemi.com
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