DC/DC converters simplify design and minimize part count
The 1 MHz ZMDI ZSPM401x product line comprises three families and 18 products: the ZSPM4011 1 A family, the ZSPM4012 2 A family, and the ZSPM4013 3 A family. Thanks to their high level of integration, the ICs require only 4 external devices – 3 capacitors and 1 inductor. Each family comes in fixed-output voltage options of 1.5, 1.8, 2.5, 3.3 and 5 V to reduce external part counts, while allowing for quick part selection and easy design. An input voltage range of 6 V to 24 V (3 A option is 6 V to 20 V) lets designers target more applications with one basic ‘cookie-cutter’ design technique.
Each family also offers a variable output voltage option of 0.9 V to 5 V for maximum part flexibility. At 5 V in and 1.8 V out, the parts offer 90% efficiency. At 6 V in and 3.3 V out, efficiency increases to 93%. The high efficiency of the design eliminates the need for any external thermal protection. Additional features are input supply under-voltage lockout, soft-start for controlled startup with no overshoot, and full protection for over-current, over-temperature, and Vout over-voltage.
Synchronous switching at 1 MHz (±10%) and internal compensation minimizes the number and size of external parts, minimizing board real estate. A typical, low standby mode of 5 µA maximizes energy efficiency while reducing the application’s power budget. All of the ICs are designed to operate over a robust temperature range from -40 to +125 degrees C.
Target applications for these devices span an array of consumer and communications products, including notebooks, tablets, smart phones, portable GPS systems, printers, cable modems, voice-over-IP (VOIP) phones, and wireless access points based on the IEEE802.11 wireless local-area-network (LAN) standard.
The ZSPM4011, ZSPM4012, and ZSPM4013 ICs come in 3mm x 3mm 16-pin PQFN packages, featuring a 9mm2 footprint.
Available in sample quantities now, the families are priced at $1.81 for 1Ku for the ZSPM4011, $1.84 for 1Ku for the ZSPM4012, and $1.89 for 1Ku for the ZSPM4013. Evaluation kits consisting of an evaluation board and user manual are available from ZMDI, along with white papers and application notes.
More information about the ZSPM401x families at
www.zmdi.com/products/smart-power-management
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