MPQ8634B
16V, 20A, Sync, Step-Down Converter with Adjustable Current Limit, Programmable Frequency, and Voltage Tracking
Active Part Numbers:
MPQ8634BGLE-P MPQ8634BGLE-Z
Meaning of P & Z 
Evaluation Tools
EVQ8634B-LE-00A Evaluation Kit High-Efficiency, 16V, 20A, Synchronous Step-Down Converter Evaluation Board
The EVQ8634B-LE-00A is an evaluation board for the MPQ8634B, a high-efficiency, monolithic, synchronous step-down converter.
The evaluation board can deliver 20A of continuous load current over a wide operating input range. High efficiency can be achieved over a wide output current load range. The MPQ8634B adopts internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.
This evaluation board can be turned on or off via a remote on/off input (EN) that is referenced to ground. This input is compatible with popular logic devices.
MPQ8634B Resources
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OPTICAL NETWORK TERMINAL (ONT) UNITSAn optical network terminal (ONT) unit is a device that connects fiber optics cables to other wiring such as Ethernet and phone lines by converting the signal from optical to electrical and vice versa. Though they draw power from an electrical source, these devices also often have battery backup options in case of a power outage. It is typically part of a larger GPON (gigabyte passive optical netw...
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SMALL CELL BASE STATIONSSmall cell base stations are more useful than ever with the ubiquity of smartphones, rising data usage, and the advent of 5G. However, small cell base station designs must meet these demands as well as weight and volume restrictions, without sacrificing performance or significantly increasing power consumption. Todays wireless market demands reliability and flexibility wherever possible, so new pr...
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SERVERS (DDR POWER)Cloud computing, AI and machine learning, and other game-changing innovations are spreading across the technology industry and becoming ubiquitous in consumers everyday lives. However, supporting the increased data and processing needs of these technologies requires servers and data centers to be able to deliver at higher rates than ever before. Servers have to handle ever-increasing amounts of da...
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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) -
VERSAL AI EDGE –L DEVICE (OPTIMIZED FOR EFFICIENCY) -
WIFIMPS works closely with Qualcomm to create power solutions for all their WiFi products supporting 802.11ax including WiFi6 standards with 2.4GHz/5GHz/6GHz bands The MPS components on these reference designs are carefully selected to meet price and performance objectives of these designs. Please contact your regional MPS contact or use the displayed link below for assistance
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OUTPUT VOLTAGE RIPPLE MEASUREMENT AND REDUCTION FOR DC/DC VOLTAGE REGULATORSMany modern servers, as well as telecom and networking equipment, have multiple voltage regulators on the system board to provide power to ICs or sub-circuits. These power rails often have very tight voltage tolerances (<1%). Power integrity measurement, such as measuring ripple voltage in full bandwidth, becomes crucial to meet the system design requirement. This article provides measurement gui...
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PMBUS COMPATIBLE, MONOLITHIC 30A DC/DC REGULATOR CAN PARALLEL UP TO EIGHT PHASES AND OUTPUT MORE THAN 240AThe need to optimize efficiency and address complex power requirements of high-end processors, FPGAs, and ASICs are making active power management a critical design requirement in datacenter servers, telecoms systems, and networking equipment applications. At the same time, engineers designing power schemes are expected to minimize board space while reducing the development time between the initia...
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POWER OVER ETHERNET (POE) POWER SUPPLY PROCESS ACROSS IEEE 802.3AF/AT/BT PROTOCOLAlthough there are various power supply types, this article will focus on Power over Ethernet (PoE) power supplies. In particular, PoE power supplies where the power sourcing equipment (PSE) supplies power to the powered device (PD) terminal equipment through the network cable. Figure 1 shows common PoE power supply equipment, including the PoE switch as well as power-receiving equipment (e.g. wir...
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HOW TO OPTIMIZE A POWER OVER ETHERNET (POE) PD DESIGNPower over Ethernet (PoE) solutions enable Ethernet cables to transmit DC power while simultaneously transmitting data in parallel to IP terminal devices — all without changing the existing wire connections set by the Ethernet standard. Transmitting power and data in one cable simplifies installation, enhances reliability, and reduces cost by eliminating the need for a power and Ethernet line, whi...
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MPS POWER MANAGEMENT SOLUTIONS FOR POWER OVER ETHERNET (POE) SWITCHESModern devices are increasingly powered by Power over Ethernet (PoE), such as IP phones, wireless APs, and IP cameras. Customer premise equipment (CPE) and small base stations in the 5G era also require PoE power. Figure 1 shows common applications powered by PoE. This article discusses MPS’s comprehensive suite of power management solutions for a wide range of switches, including PSE, boo...
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UNDERSTANDING POWER OVER ETHERNET AND POE CONTROLLERS AND CONVERTERSThis introduction to power over Ethernet (PoE) covers the basics of PoE standards, how PoE structure functions, and how PoE works between the PSE and PD. PoE enables an Ethernet cable to transmit DC power while also transmitting data in parallel to IP terminal devices. PoE power delivery includes two equipment types: Power-sourcing equipment (PSE) or a power provider, and powered devices (PDs) or ...
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FEASIBILITY AND ACCURACY ANALYSIS OF INPUT POWER ESTIMATIONPFC converters are widely used in the industry to provide DC output voltage from the main lines, and to maintain a high power factor (PF) and low current distortion at the same time. In some of these applications, such as telecom, server, workstation power supplies, and plug-in electric vehicles, the active input power needs to be measured in real time in order to monitor energy consumption, as we...
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FULLY INTEGRATED POE PD INTERFACE: MP8030The MP8030 is a fully integrated, 71W PoE PD interface with a high-efficiency flyback/forward controller, and is compatible with 802.3af/at/bt specifications. Power Over Ethernet, or PoE, devices can transmit both network and power signals with a single cable. By using an N-channel MOSFET in place of a diode and integrating a MOSFET at Gate 2, the MP8030 significantly reduces voltage drop, reduces...
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FEASIBILITY AND ACCURACY ANALYSIS OF INPUT POWER ESTIMATION FOR BOOST PFC CONVERTER WITHOUT ADDITIONAL SENSORThe most commonly used boost PFC converters in the industry only sample input voltage, output voltage, and inductor current, and control the switching frequency and duty cycle. This presentation discusses the feasibility of estimating real-time input power based on this limited information in a boost converter, using the HR1211 as an example. The influences of major non-ideal effects, including tu...
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OPTIMIZE SWITCH-MODE POWER MODULES TO ACHIEVE ULTRA-LOW RIPPLE AND NOISEThis presentation summarizes optimal power solution designs that provide low noise and high efficiency. We explore a design example with more specifics and final test results that meet the outlined requirements. These test results demonstrate how a highly integrated switch-mode power module with a filtering circuit design can effectively power RF data converters with multi-gigabit sampling rates. ...
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VERSAL HBM – FULL POWER MANAGEMENT (OPTIMIZED FOR SIZE) REFERENCE DESIGN -
VERSAL HBM – M/H DEVICE (OPTIMIZED FOR SIZE) -
VERSAL HBM – L DEVICE (OPTIMIZED FOR SIZE) -
DESIGNING A MULTI-PHASE BUCK CONVERTER WITH DIGITAL CONTROLLERSOver recent decades, server and computing system complexity has increased alongside power delivery (PD) requirements. This makes regulator design more challenging because it requires a tradeoff between higher efficiency and a fast dynamic response, as well as between reduced power loss and the size of the MOSFETs. Servers require power supplies with high current, low voltages, and fast transient ...
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COMPACT ISOLATED POWER MODULES: THE MID SERIESMPS’s family of small, isolated power modules is perfect for biasing the digital isolators in RS485, RS232, and CAN communication, as well as other industrial and network applications. Higher channel density in PLC systems means less space per channel, making it critical for solutions to minimize board space. The MID power module family provides a tiny solution that integrates a transformer and a ...
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