company blog about Supply Murata Non-Isolated DC-DC Converters:MYMGK/MYSGK/OKL/MYLSM Series

Supply Murata Non-Isolated DC-DC Converters:MYMGK/MYSGK/OKL/MYLSM Series

Shenzhen Mingjiada Electronics Co., Ltd. is a renowned distributor of electronic components, committed to providing our customers with high-quality service through our expertise, integrity, technical know-how and extensive experience.

Supply Advantages:

1. Quality and Authenticity Guarantee

Direct sourcing from manufacturers/authorised channels: We have established long-term partnerships with over 500 renowned semiconductor manufacturers worldwide; 100% of our products are genuine and feature batch traceability.

Strict quality control: Certified to ISO 9001 and ISO 14001; we implement end-to-end inspections to eliminate counterfeit and refurbished products.

2. Ample Stock and Rapid Dispatch

Extensive inventory: We operate smart warehouses in Shenzhen, Hong Kong, Taiwan and other locations, stocking over 2 million SKUs, with more than 5,000 high-demand products always in stock.

Rapid dispatch: 98 per cent of orders are dispatched within 24 hours; urgent orders can be delivered within 48 hours, significantly shortening procurement lead times.

3. Product Coverage and One-Stop Service

Comprehensive product coverage: Microcontrollers (MCUs), microprocessors (MPUs), power management ICs, field-programmable gate arrays (FPGAs), digital signal processors (DSPs), analogue-to-digital converters/digital-to-analogue converters (ADCs/DACs), power devices, sensors and more, covering the consumer electronics, automotive, industrial, telecommunications and Internet of Things (IoT) sectors.

One-Stop Ordering: We provide a complete solution ranging from product selection and quotations to delivery and after-sales support, streamlining the procurement process.

Procurement Flexibility: We support both single-unit orders (samples) and large-scale production orders.

I. MYMGK Series: General-Purpose, Medium-Power, Compact Converters

The MYMGK series is Murata’s flagship range of general-purpose, medium-power, cost-effective, non-isolated DC-DC step-down converters. Utilising a miniature LGA surface-mount package, these devices feature a compact design and high integration, balancing size with power supply performance. Suitable for most small-to-medium power supply applications in consumer and standard industrial settings, this series is one of the company’s most versatile core product lines.

1. Key Electrical Parameters

The series’ input voltage primarily covers a wide range of 4.5V to 15V, with mainstream output current ratings of 6A, 12A and 20A. The output voltage can be flexibly adjusted via an external precision resistor within a range of 0.7V to 5.0V, making it suitable for the low-voltage power supply requirements of FPGAs, MCUs and small processors. The product features a fixed switching frequency, with steady-state conversion efficiency reaching over 95 per cent; it maintains excellent energy efficiency even under light load conditions, effectively reducing equipment power consumption and heat generation.

2. Core Performance and Structural Advantages

The MYMGK series employs a fixed-frequency synchronous buck architecture, offering rapid load response. Both voltage regulation and load regulation are maintained within ±1 per cent, ensuring extremely high output voltage accuracy and outstanding power supply stability. The module incorporates multiple protection mechanisms, including overcurrent protection, short-circuit protection, under-voltage lock-out (UVLO) and over-temperature protection. It features self-recovery from short-circuit faults, significantly enhancing operational reliability. With an operating temperature range of –40°C to +85°C, it meets the wide-temperature requirements of standard industrial and consumer electronics applications, whilst having passed rigorous thermal cycling and high-temperature bias reliability tests to ensure a long service life. The package utilises a standardised surface-mount design, suitable for automated assembly production, thereby reducing mass production costs.

3. Typical Application Scenarios

Widely used in smart home devices, small and medium-sized industrial control boards, IoT terminals, standard automotive electronic modules, audio-visual equipment, office electronics and other small-to-medium power supply scenarios, providing stable low-voltage power to various main control chips, logic circuits and sensor systems.

II. MYSGK Series: High-Power, High-Speed Response Converters

The MYSGK series comprises Murata’s high-power, high-dynamic-response non-isolated DC-DC converters, positioned for mid-to-high-end high-power power supply applications. Utilising the MonoBK integrated micro-package, they achieve extremely high output currents within an extremely compact form factor, balancing high-density integration with exceptional power supply performance. They are specifically designed for precision equipment characterised by significant load fluctuations and stringent dynamic response requirements.

1. Key Electrical Parameters

Typical models in the series feature an input voltage range of 4.5 V to 15 V and an adjustable output voltage range of 0.7 V to 1.8 V. They are characterised by an ultra-high continuous output current of 30 A, with a peak output power of up to 54 W. With a fixed switching frequency of 425 kHz and a start-up delay of just 3.9 ms, the module delivers an extremely fast load step response, capable of handling sudden changes in high-current loads of up to 15 A whilst keeping output voltage fluctuations within 3 per cent. The module offers outstanding energy efficiency, with a maximum conversion efficiency of 95.7 per cent, whilst maintaining low losses and low heat generation even under high-power operating conditions.

2. Core Performance and Structural Advantages

Measuring just 14.0 × 11.0 × 8.3 mm, the MYSGK series is one of the smallest PoL converters in its power class, maximising PCB layout space savings. It offers excellent thermal derating performance, enabling stable high-power output without forced air cooling, with a maximum operating ambient temperature of 105°C, demonstrating outstanding high-temperature resistance and ageing resistance. It offers a comprehensive feature set, supporting remote ON/OFF logic control and Power Good (PG) status signal output, enabling precise control of power sequencing. It incorporates comprehensive protection against overvoltage, undervoltage, overcurrent, short-circuit and overheating; the short-circuit protection utilises a ‘hiccup’ mechanism, allowing continuous short-circuit operation without damage, making it suitable for demanding operating conditions. It also supports pre-biased start-up to prevent voltage spikes at start-up from damaging downstream precision components.

3. Typical Application Scenarios

Primarily suited to high-power, high-dynamic-load scenarios such as data communications, telecommunications base stations, high-end industrial servers, field-programmable gate arrays (FPGAs), high-speed CPUs and distributed bus architecture (DBA) systems; it serves as the core power supply module for high-end precision electronic equipment.

III. OKL Series: Classic, Highly Reliable Standardised Converters

The OKL series comprises Murata’s classic range of highly reliable, standardised, non-isolated DC-DC converters. Featuring mature technology and strong compatibility, they are widely adopted across the industry. They are characterised by stability, durability, low noise and high consistency, making them suitable for all types of standardised equipment with stringent power supply reliability requirements.

1. Key Electrical Parameters

This series offers a wide range of input voltages from 3.3 V to 24 V, with output currents covering the mainstream range of 3 A to 15 A. Output voltage accuracy reaches up to ±0.5 per cent, and ripple and noise control is excellent, with ripple and noise below 1 per cent of the output voltage at a bandwidth of 20 MHz. The entire product range maintains high conversion efficiency, achieving over 94% efficiency at full load, with balanced efficiency across both high and low load conditions, making it suitable for equipment requiring continuous and stable operation.

2. Core Performance and Structural Advantages

The OKL series has been thoroughly validated in the market over the long term, featuring mature manufacturing processes, stable quality control and excellent batch consistency. It employs an optimised synchronous buck topology, resulting in low switching noise and minimal electromagnetic interference; it meets the EMC requirements of most equipment without the need for complex external filtering circuits. It incorporates comprehensive protection circuits, supports remote start/stop and power supply status monitoring, and is suitable for scenarios involving the coordinated operation of multiple power supplies. With an operating temperature range of –40°C to +100°C, these modules are resistant to extreme temperature fluctuations and offer strong resistance to vibration and damp heat, enabling long-term, stable operation in complex environments such as industrial and outdoor settings. Their standardised pinout and packaging design ensures high compatibility, allowing them to directly replace similar generic modules in the industry and offering exceptional adaptability.

3. Typical Application Scenarios

Widely used in industrial automation equipment, auxiliary power supplies for telecommunications base stations, security surveillance equipment, medical auxiliary electronic systems, on-board auxiliary modules for rail transport, and test and measurement instruments—all scenarios where power supply stability and reliability are of the utmost importance.

IV. MYLSM Series: Low-Current, High-Precision, Low-Power Converters

The MYLSM series comprises Murata’s range of miniature, non-isolated DC-DC converters designed for low-current, high-precision and low-power applications. Featuring an extremely compact form factor, minimal power consumption and excellent voltage regulation accuracy, they are specifically engineered for lightweight, miniaturised precision electronic equipment.

1. Key Electrical Parameters

The series features an input voltage range of 4.5 V to 17 V, an adjustable output voltage range of 1.0 V to 5.25 V, and a rated output current of 2.5 A, classifying it as a low-current precision power supply module. It offers extremely high voltage regulation accuracy, with a voltage deviation of less than ±0.8% across all operating conditions, as well as excellent load regulation and line regulation, enabling it to precisely meet the power supply requirements of precision low-voltage devices. With extremely low quiescent power consumption and minimal standby power loss, it is well-suited to long-term operation in low-power devices.

2. Key Performance and Structural Advantages

The MYLSM series utilises an ultra-compact surface-mount package, occupying minimal PCB space and adapting to the compact layouts of miniaturised devices. The module features high integration and minimal external circuitry, requiring only a small number of external capacitors for normal operation, thereby reducing the complexity and cost of the overall system design. It offers high operational stability, a low temperature drift coefficient, and no significant fluctuations in voltage output across a wide temperature range. Equipped with overcurrent, short-circuit and over-temperature protection functions, its reliability far exceeds that of standard discrete power supply solutions, whilst meeting industrial-grade wide-temperature operating standards and demonstrating excellent environmental adaptability.

3. Typical Application Scenarios

Primarily used in low-power, high-precision, low-power-consumption power supply scenarios such as micro-sensor modules, wearable electronic devices, portable instruments and meters, small IoT terminals, precision analogue circuits, and low-speed MCU control systems.

V. Key Differences Between the Four Series and Selection Summary

All four series are Murata non-isolated synchronous buck DC-DC converters, sharing the common advantages of high efficiency, high stability and multiple protection features. The key differences lie in power rating, response speed and application focus; selection can be tailored to specific requirements:

- MYLSM Series: Low current, high precision and low power consumption, suitable for micro-precision low-power devices;

- MYMGK Series: Medium power, high cost-effectiveness and strong versatility, suitable for the vast majority of consumer and general industrial low-to-medium power applications;

- OKL Series: High reliability, low noise and standardised, suitable for industrial and telecommunications equipment operating under harsh conditions and requiring high stability;

- MYSGK Series: High power, fast response and ultra-compact size, suitable for high-power dynamic load applications such as high-end FPGAs, CPUs and data communications.