
Analog Devices Inc. Quad Buck Regulator Integrated Power Solution
Analog Devices ADP5054 quad buck regulator integrated power solution combines four high-performance buck regulators in a 48-lead LFCSP package. ADP5054 meets demanding performance and board space requirements. The device provides a direct connection to high input voltages up to 15V with no pre-regulators.
Channel 1 and Channel 2 integrate high-side power MOSFETs and low-side MOSFET drivers. Designers can use external NFETs in low-side power devices to achieve an efficiency-optimized solution and deliver a programmable output current of 2A, 4A, and 6A. Combining channel 1 and channel 2 in a parallel configuration provides a single output with up to 12A of current.
Channel 3 and channel 4 integrate both high-side and low-side MOSFETs to deliver an output current of 2.5A. Combining channel 3 and channel 4 in a parallel configuration provides a single output with up to 5A of current.
Designers can program or synchronize the switching frequency of the ADP5054 to an external clock from 250kHz to 2MHz. An individual 1/2x frequency configuration is available for each channel. Developed with an individual precision enable pin on each channel, the ADP5054 offers easy power-up sequencing. The internal low 1/f noise reference is implemented in ADP5054 for noise-sensitive applications.
The ADP5054 quad buck regulator integrated power solution is ideal for FPGA & processor applications, small cell base stations, security & surveillance, and medical applications.
Features
- Wide input voltage range: 4.5V to 15V
- ±1.5% output accuracy over full temperature range
- 250kHz to 2MHz adjustable switching frequency with individual 1/2x frequency option
- Power regulation
- Channel 1 and channel 2: programmable 2A/4A/6A sync buck regulators with low-side FET driver
- Channel 3 and channel 4: 2.5A sync buck regulators
- Flexible Parallel Operation
- Single 12A output (channel 1 and channel 2 in parallel)
- Single 5A output (channel 3 and channel 4 in parallel)
- Low 1/f noise density (~40µVrms @ 0.8VREF 10Hz to 100KHz)
- Precision enable with 0.8V accurate threshold
- Active output discharge switch
- FPWM/PSM mode selection
- Frequency synchronization input or output
- Power-good flag for channel 1 output
- UVLO, OCP, and TSD protection
- 48-lead, 7mm × 7mm LFCSP
- −40°C to +125°C operational junctional temperature range
Applications
- FPGA and processor applications
- Small cell base stations
- Security and surveillance
- Medical applications
Typical Application Circuit
