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
Applications
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 Sheet | PFC Stage | LLC Stage | VCC Power Supply | Package |
|---|---|---|---|---|
MD6751  | Bridgeless dual boost (about 500 W) | Voltage mode (about 200 W) | Self-supplied | SOP28 |
| 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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