Alpha and Omega Semiconductor Launches EZBuck with Enhanced Light Load Operation

The AOZ3015 is a high-efficiency and easy-to-use synchronous PWM buck regulator with an input voltage range of 4.5V to 18V. It provides 3A of continuous output current at over 90% efficiency and maintains 85% efficiency while in 10mA light load operation. When operating in low output current conditions, the AOZ3015 will operate in a proprietary pulse energy mode (PEM) to obtain high efficiency. Under heavy load steady-state conditions, the AOZ3015 will operate in fixed frequency and Continuous-Conduction Mode (CCM).

“AOS’s proprietary EZBuck technology helps bring our customers compact and high efficiency DC/DC solutions that we can scale to their power requirements.” said Dr. Yenju Wang, Product Marketing Director at AOS. “The high-efficiency light load operation feature AOZ3015 makes it an ideal for those power supplies with a stand-by mode mandated by many government agencies worldwide.”

Technical Highlights
Input Voltage Range: 4.5V to 18V
MOSFET On-Resistance (typ): High-side (85mOhms), Low-side (50mOhms)
Switching Frequency: 500KHz
Package: E-Pad SO-8
Efficiency at 10mA (12V to 5V): 85%
Efficiency at 3A (12V to 5V): 92%

Pricing and Availability
The AOZ3015 is immediately available in production quantities with a lead-time of 12 weeks. The unit price for 1,000 pieces is $0.80.