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New Products
October 12, 2012
NXP Achieves Ultra-Low Output Voltage Ripple with 6-MHz DC/DC Converter
NXP Semiconductors N.V. announced its state-of-the-art DC6M DC/DC switching regulator family featuring a very high 6-MHz frequency, an ultra-low output voltage ripple performance of 7 mV, and high efficiency up to 95 percent. The DC6M family supports up to 650 mA supply current in a very small wafer-level chip-scale package (WLCSP6), measuring only 1.36 x 0.96 x 0.47 mm. With an input voltage range from 2.3 to 5.5 V, the new DC/DC converters are ideally suited for battery-driven portable devices such as smartphones, as well as other consumer devices where reliable, efficient power management is essential and space is limited.
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With a typical output voltage ripple of only 7 mV, the DC6M family (including the DC6M4, DC6M5 and DC6M6) minimizes disturbances to the output voltage signal caused by the switching mechanism, thus enabling a stable signal, enhancing energy efficiency, and overcoming a common limitation of most other DC/DC converters today. In addition, the high switching frequency of 6 MHz allows the usage of SMD inductors as small as 470 nH in a flat 0805 package size (available with heights as small as 0.8 mm), further reducing the space required in the design. To illustrate, a typical smartphone application area occupied by a step-down converter and its surrounding components can be reduced by 40 percent when using a 6-MHz DC/DC converter, instead of a 3-MHz alternative. Further, the DC6M buck converter supports the ability to disable the device, which reduces the quiescent current down to 0.2 µA.
"DC/DC switching regulators offer built-in efficiency advantages over other voltage regulators. Providing best-in-class performance in a very flat package, our DC6M step-down regulators open exciting new possibilities for engineers in designing sub-systems with higher efficiency, cleaner signals and much smaller footprint -- whether they use the DC6M as a standalone or in combination with LDOs," said Frank Hildebrandt, international product marketing manager, standard linear product line, NXP Semiconductors.
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The DC6M DC/DC switching regulators are the latest additions to NXP's high-quality DC power management products, including DC/DC converters, low-dropout (LDO) voltage regulators, and voltage references.
Key Features
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The NXP DC6M4, DC6M5 and DC6M6 DC/DC step-down switching regulators provide the following features:
* High 6 MHz switching frequency, which allows the usage of very small inductors (470 nH)
* Availability in output currents of 425, 500 and 650 mA
* Output signal with very low disturbances; output ripple typically at 7 mV
* Very high efficiency of up to 95%; optimized for loads from 40 to 650 mA
* Ability to disable the device, which reduces the quiescent current down to 0.2 µA
* Input voltage range from 2.3 to 5.5 V, and an output voltage range from 1.2 to 2.85 V, supporting requirements of battery-driven portable devices
* Very small WLCSP6 package (1.36 x 0.96 x 0.47 mm)
* High power dissipation of 800 mW
* Many additional options, including voltage switch; a forced PWM mode for Pulse Width Modulation (instead of automatic Pulse Frequency Modulation/PWM switch); or the SMIA standard (XSHUTDOWN/powergood) option
Availability
Qualification samples of the DC6M6 series (supporting 650 mA) are available immediately. Indicative pricing for 1,000 pieces is $0.65 USD.
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