Winner of the Energy Conservation Grand Prize:
Sanken’s High-efficient Digital Power Management ICs [MD6750 Series]

Our high-efficient digital power management ICs — MD6750 series — won the Minister of Economy, Trade and Industry Award (Power-saving Field), as the highest award in the Product & Business Model Category at the FY2022 Energy Conservation Grand Prize sponsored by the Energy Conservation Center, Japan (ECCJ; supported by the Ministry of Economy, Trade and Industry).

Here are the advantages the awarded MD6750 series brought out: a 30% decrease in the number of components used in a power supply circuit; a 20% decrease in the size of power supplies; and a 2% increase in conversion efficiency at all load ranges.

With this award, ECCJ honored us for this estimated energy-saving effect as a promising efficiency enhancer for power supply circuits that are indispensable to meet the global growth of electronic equipment products.

Energy-saving System Achieved by Digital Control and Bridgeless PFC

Demand for Power Supplies to Be More Efficient

A social trend toward growing needs for energy conservation has led to more strict requirements imposing electronic equipment to have better efficiency even in light-load operations, such as during standby mode or internet communications.
For example, the ErP (Energy-related Products; former Eco-design) Directive, which is a new regulation set by the EU, has been implemented to strengthen the regulations on efficiency at light to medium loads.
Energy-saving performance significantly relies on a power supply circuit, which converts outlet-supplied AC power into DC power indispensable to any electronic equipment like a TV.
To address such recent demand for higher efficiency, we developed the products — MD6750 series — that will help your application easily support advanced digital controls.

Energy-saving System Achieved by Digital Control and Bridgeless PFC

Efficiency Comparison* under OLED TV Specs:
MD6752 vs. Typical Analog Power Supply

Higher efficiency at all loads from light to heavy!

  • Efficiency increase at 100% load
     88.9%→91.5% ▶ +2.6%
  • Efficiency increase at 30% load
     88.5%→92.0% ▶ +3.5%
  • Efficiency increase at 10% load
     79.0%→81.2% ▶ +2.2%

* Using 500 W power supply prototypes: an MD6752 digital power supply (synchronous rectification) vs. a typical analog power supply (diode rectification).

Energy-saving Effect Estimations*

  • Estimation when all the OLED/4K-LCD TVs domestically shipped are MD6750-applied:
      ▶ 23.79M kWh will be saved per year (OLED: 0.85M units + over-4K LCD: 3.56M units)
  • Estimation when all the OLED TVs globally shipped are MD6750-applied:
      ▶ 70.50M kWh will be saved per year (9.80M units)

* The number of units and the values of energy-saving effects are based on our own research.

Best Mix of Digital and Analog Technologies

Our MD6750 series achieves analog-digital integration by bringing together the MCU chip and the high-breakdown-voltage analog chip into a single package.

For Conventional Analog Power Supply ICs:

  • Performs optimal control depending on operating conditions
  • Enables GUI-based development and evaluation
    → Reduces adjustment workloads and costs
  • Supports additional functions other than power supply control

For General Digital Power Supply MCUs:

  • Requires no external power supply IC or gate drive IC for MCUs
    → Reduces costs
  • Simplifies design process through dedicated circuits

Product Overview


For devices requiring high power supplies such as:

  • Audiovisual Equipment (e.g., OLED TV)
  • Office Automation Equipment (e.g., Server, Multifunction Printer)
  • Industrial Equipment
  • Communication Equipment

MD6750 Series Selection Guide

Part Number /Data SheetPFC StageLLC StageVCC Power SupplyPackage
MD6751 Bridgeless
dual boost
(about 500 W)
Voltage mode
(about 200 W)
MD6752 Current mode
(about 500 W)
Externally supplied
MD6752S SSOP32

Related Information

Please also check the following page if you want to learn more about the MD6750 series, what digital power supplies can benefit, and so on.
▶ What Is a Digital Power Supply? Sanken’s Digital Power Management ICs: “MD67xx Series”

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