AOZ22559QI
AOZ22559QI is 25V/15A Synchronous Regulator manufactured by Alpha & Omega Semiconductors.
Description
The AOZ22559QI is a high-efficiency, easy-to-use DC/DC synchronous buck regulator that operates up to 25 V. The device is capable of supplying 15 A of continuous output current with an output voltage adjustable down to 0.6 V (±1.0%).
A proprietary constant on-time PWM control with input feed-forward results in ultra-fast transient response while maintaining relatively constant switching frequency over the entire input voltage range. A low 70 ns minimum on-time enables very low output voltages at ultra-high operating frequencies.
Integrated AC ripple injection enables all-ceramic low ESR output filter capacitors and smaller PCB footprint with no external ponents needed.
Selectable PFM mode optimizes light load efficiency while forced PWM mode maintains constant frequency for lower harmonic noise.
The device features multiple protection functions such as VCC under-voltage lockout, cycle-by-cycle current limit, output over-voltage protection, short-circuit protection, and thermal shutdown.
The AOZ22559QI is available in a 4 mm × 4 mm QFN-30L package and is rated over a -40°C to +85°C ambient temperature range.
Features
- Wide input voltage range
- 5.5 V to 25 V
- Support Intel ITDC up to 15 A
- Support Intel ICCMAX up to 30 A
- Output voltage adjustable down to 0.6 V (±1.0%)
- Low RDS(ON) internal NFETs
- 11 mΩ high-side
- 4 mΩ low-side
- Constant on-time with input feed-forward
- Programmable on-time up to 3.5 μs and down to 70 ns
- Programmable Switching Frequency Range up to 1MHz
(For 12 VIN to 1 VOUT)
- Selectable PFM or forced PWM light load operation
- Ceramic capacitor stable
- Remote sense
- Adjustable current limit setting
- Adjustable soft-start
- Power Good output
- Integrated bootstrap diode
- Under-voltage protection and over-voltage protection
- Cycle-by-cycle current limit
- Short-circuit protection
- Thermal shutdown
- Thermally enhanced 30-pin 4 mm × 4 mm QFN
Applications
- pact PCs and gaming systems
- Set-top boxes and LCD TVs
- Server...
