NB685
Wide Vin 4.5-26V, 12A, Low Iq, High Current Synchronous Buck Converter with +/-1A LDO and Buffered Reference
Active Part Numbers:
NB685GQ-P NB685GQ-Z
Meaning of P & Z 
Recommended Inductors
Molded Inductor 0.68µH
Molded Inductor 0.68µH
NB685 Resources
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PLANNING FOR SUDDEN POWER FAILURES WITH THE MP5515Power failures tend to cause a domino effect of disruptions, resulting in system failures and data loss, as well as damage to servers and equipment. This article describes how to use the MP5515 to protect solid-state drives (SSDs) against sudden power failure. There are three main issues if an SSD experiences a power failure: The MP5515 is an input power conditioning PMIC that provides a compact...
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VERSAL HBM – FULL POWER MANAGEMENT DEVICE (OPTIMIZED FOR EFFICIENCY) -
VERSAL HBM – M/H DEVICE (OPTIMIZED FOR EFFICIENCY) -
VERSAL HBM – L DEVICE (OPTIMIZED FOR EFFICIENCY) -
VERSAL AI EDGE – FULL POWER MANAGEMENT (OPTIMIZED FOR EFFICIENCY) -
VERSAL AI EDGE –M/H DEVICE (OPTIMIZED FOR EFFICIENCY) -
INSIDE XBOX SERIES X: ENGINEERING DESIGN & TEARDOWN OF POWER DELIVERY TO SOC, GPU, CPU & MEMORYThe Microsoft Game Stack Channel gave an in-depth overview of the new Xbox Series X design, including its improved memory and processing power. This video includes a portion of their presentation that discusses how the new Xbox is being powered by MPS products, increasing its overall power density, efficiency, and power delivery. Reach out to our engineering team to see how we can improve power fo...
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ARTIX ULTRASCALE+ AU20P/25P MINIMUM RAILS – LOWEST COST -
MP4581 & MP4541: SYNCHRONOUS, HIGH-VOLTAGE BUCK CONVERTERSThe MP4581 and MP4541 support a 100V and 80V maximum input voltage, respectively, with up to 0.8A of output current in a compact SOIC-8EP package. Up to 94% peak efficiency Fewer external components required makes layout easier Integrated high-side and low-side FETs 15μA quiescent current Supports satellite video, e-bike GPS tracking, industrial power supplies, industrial gateways, printer ...
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MP5470: UNBOXING AND GETTING STARTEDOur engineers walk you through unboxing and getting started with the evaluation kit for the MP5470, a power management IC with four buck converters and configurable settings. The EV5470-L-00A evaluation board provides the ability to test and configure the 4V to 16V PMIC for your application.
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VERSAL PREMIUM - FULL MANAGEMENT (OPTIMIZED FOR EFFICIENCY) REFERENCE DESIGN -
SWITCH NODE LAYOUT CONSIDERATIONS FOR EMCThe switch node of a switching regulator or power converter circuit is a critical conduction path that requires special attention when designing the PCB layout. This circuit node is where one or more power semiconductor switches (such as a MOSFET or diode) connect to a magnetic energy-storing device (such as an inductor or transformer winding). The switching signals of this circuit node contain fa...
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VERSAL PREMIUM - M, H DEVICES (OPTIMIZED FOR EFFICIENCY) REFERENCE DESIGN -
VERSAL PREMIUM –L PS OVERDRIVE (OPTIMIZED FOR EFFICIENCY) REFERENCE DESIGN -
VERSAL PREMIUM –L DEVICE (OPTIMIZED FOR EFFICIENCY) REFERENCE DESIGN -
UNDERSTANDING DATASHEET THERMAL PARAMETERS AND IC JUNCTION TEMPERATURESThere is much confusion regarding how to make meaningful design decisions when converting a datasheet’s thermal resistance parameters. This introductory article will help today’s hardware engineers understand how to decipher the thermal parameters found in datasheets — including whether to choose theta vs. psi, how to calculate these values, and most importantly, how to apply the...
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QUICK TIPS TO DIAGNOSE AND STABILIZE AN UNSTABLE SWITCHING POWER SUPPLYAn unstable power supply can cause severe system issues, such as audible noise from the passive components, unexpected jittering in the switching frequency, extreme oscillations on the output voltage during load transient events, and failures in the semiconductor switches. While there are various reasons for instability, an un-tuned compensation network accounts for majority of instability issues ...
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USING EXTERNAL KNOBS TO IMPROVE TRANSIENT PERFORMANCE OF BUCK REGULATORS WITH AN INTEGRATED COMPENSATION NETWORKThe high power density requirement and board-level space constraints in modern applications — such as lighting, ADAS, and USB — call for higher integration in buck regulators. There is a trend to integrate MOSFETs and compensation networks inside the chip. This integration of the compensation network’s passive components saves cost, board space, and design iterations. However, it...
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THE MPQ888X: THE POWER OF AN ANALOG CONVERTER, THE FLEXIBILITY OF A DIGITAL DEVICEUnderstand the configurable parameters of the MPQ8886. See how to set up and adjust the evaluation board.
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AUTOMOTIVE WIRELESS POWER SOLUTIONS FOR 15W QI STANDARDLearn about front-end performance for wireless power. See the advantages of the MPQ4280 and how it compares with competitors.
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VU57P ULTRASCALE+ EXTENDED PORTFOLIO HIGHEST SIZE POWER MANAGEMENT REFERENCE DESIGN -
ANALOG SIGNAL VS. DIGITAL SIGNALSA signal is an electromagnetic or electrical current that carries data from one system or network to another. In electronics, a signal is often a time-varying voltage that is also an electromagnetic wave carrying information, though it can take on other forms, such as current. There are two main types of signals used in electronics: analog and digital signals. This article discusses the correspond...
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ZYNQ ULTRASCALE+ MPSOC 8 RAIL DISCRETE POWER MANAGEMENT REFERENCE DESIGNThis is a scalable design for powering the AMD Xilinx Zynq UltraScale+ MPSoC family (ZU2 to ZU19). This discrete solution combines a small footprint with excellent efficiency and tight regulation. An external sequencer meets power up and power down sequencing requirements.
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ZYNQ ULTRASCALE+ MPSOC 7 RAIL DISCRETE POWER MANAGEMENT REFERENCE DESIGNThis is a scalable design for powering the AMD Xilinx Zynq UltraScale+ MPSoC family (ZU2 to ZU19). This discrete solution combines a small footprint with excellent efficiency and tight regulation. An external sequencer meets power up and power down sequencing requirements.
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THE PAST AND PRESENT OF COT CONTROLTo obtain a lower dynamic ripple, engineers often have to balance tradeoffs between the bandwidth and stability of a system’s power supply, whether they’re looking at a wireless PA system or the core of a CPU. Constant-on-time (COT) control is gaining traction in the power management industry, and is widely used in the computing field for the core IC’s power supply. As artificia...
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