High-Efficiency Buck Converters from Diodes Incorporated Provide Wide-Ranging POL Design Versatility

Rhea-AI Summary

Diodes Incorporated (Nasdaq: DIOD) has expanded its synchronous buck converter portfolio with the introduction of AP62500 and AP62800 models, offering continuous output currents of 5A and 8A. These converters are designed for flexibility, accommodating mass-market consumer products like power supplies, televisions, and home appliances. The AP62500 operates within a 4.5V to 18V input range, while the AP62800 ranges from 4.5V to 17V, both adjustable down to 0.6V. Key features include low on-resistance for improved efficiency, selectable frequencies (400kHz, 800kHz, 1.2MHz), and multiple operating modes. Priced at $0.325 and $0.570 respectively for 1,000 piece quantities, these devices aim to enhance compact designs with low electromagnetic interference and excellent transient response.

Positive

• Expansion of synchronous buck converter portfolio with two new models (AP62500 and AP62800)
• Targeted for mass-market applications, enhancing potential for sales growth
• Low on-resistance figures improve step-down conversion efficiency
• Wide input voltage ranges and adjustable output voltages offer design flexibility
• Competitive pricing at $0.325 and $0.570 for AP62500 and AP62800 respectively

Negative

• None.

PLANO, Texas--(BUSINESS WIRE)-- Diodes Incorporated (Diodes) (Nasdaq: DIOD) has announced new additions to its synchronous buck converter portfolio. With continuous output current ratings of 5A and 8A respectively, the AP62500 and AP62800 offer the flexibility engineers need to develop point-of-load (POL) solutions that are optimized for either efficiency or size. Enabling compact implementations with minimal component count, these devices are targeted at use in mass-market consumer products, such as 5V and 12V distributed power bus supplies, television sets and monitors, white goods and small home appliances, FPGA, DSP, and ASIC supplies, home audio, network systems, gaming consoles, consumer electronics, and general purpose point of loads.

Both buck converters have wide input voltage ranges—with the AP62500 covering 4.5V to 18V, and the AP62800 covering 4.5V to 17V (making both suitable for 5V and 12V rail applications). Their output voltages can be adjusted down to 0.6V. Three different switching frequencies may be selected (400kHz, 800kHz, and 1.2MHz), allowing engineers to prioritize elevated conversion efficiency or focus on having a compact form factor. In addition, the devices have three selectable operating modes; pulse frequency modulation (PFM) for improved light-load efficiency, pulse width modulation (PWM) for reduced output voltage ripple, and ultrasonic (USM) for avoiding audible frequency range while ensuring the switching frequency stays above 20kHz.

On-resistance (R_DS(ON)) figures are kept low in relation to both the high-side MOSFET (47mΩ for AP62500; 22mΩ for AP62800) and low-side MOSFET (18mΩ for AP62500; 10mΩ for AP62800). This helps to improve step-down conversion efficiency levels. An ultra-low quiescent current (IQ) is also achieved while in PFM mode (195μA typical), further enhancing light-load efficiencies.

The design of these buck converters minimizes electromagnetic interference (EMI) issues. A proprietary gate-driver design mitigates switching-node ringing without having to extend MOSFET turn-on/turn-off times, which would otherwise impact high-frequency switching capabilities. Constant on-time (COT) control results in fast transient response and low-output voltage ripple, as well as facilitates better loop stabilization. Soft-start time adjustability is another important feature to protect against the risk of damage from inrush currents.

In 1,000 piece quantities, the AP62500 is available at $0.325 and the AP62800 is available at $0.570. They are both supplied in 12-pin V-QFN2030 packages.

About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, delivers high-quality semiconductor products to the world’s leading companies in the automotive, industrial, computing, consumer electronics, and communications markets. We leverage our expanded product portfolio of discrete, analog, and mixed-signal products and leading-edge packaging technology to meet customers’ needs. Our broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 32 sites, including engineering, testing, manufacturing, and customer service, enables us to be a premier provider for high-volume, high-growth markets. For more information visit www.diodes.com.

The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries.

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© 2023 Diodes Incorporated. All Rights Reserved

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FAQ

What are the new products announced by Diodes Incorporated?

Diodes Incorporated announced the launch of two synchronous buck converters, AP62500 and AP62800.

What are the output current ratings for the new buck converters?

The AP62500 has a 5A output current rating, while the AP62800 has an 8A rating.

What is the price of the AP62500 and AP62800 models?

The AP62500 is priced at $0.325 and the AP62800 is priced at $0.570 for 1,000 piece quantities.

What applications are targeted by the new buck converters?

These converters are aimed at mass-market consumer products like televisions, home appliances, and power supplies.

What input voltage range do the AP62500 and AP62800 models cover?

The AP62500 covers an input range of 4.5V to 18V, while the AP62800 covers 4.5V to 17V.