Analog Devices Inc. ADP5055 Buck Regulator
Analog Devices Inc. ADP5055 Buck Regulator
Analog Devices Inc. ADP5055 Triple Buck Regulators are an integrated power solution that combines three high performance buck regulators in a compact package. The ADP5055 can interface directly to input voltages up to 18V without the use of a pre-regulator. All channels on the ADP5055 integrate high-side and low-side power MOSFETs for an optimized efficiency solution. Channel 1 and Channel 2 provide 3.5A or 7.0A programmable output current, or provide a single output with up to 14.0A in parallel operation. Channel 3 provides 1.5A or 3.0A programmable output current.
The switching frequency of the Analog Devices Inc. ADP5055 is programmable or synchronized to an external clock. The ADP5055 includes an enable pin (ENx) on each channel to facilitate power-up sequencing or to set adjustable undervoltage lockout (UVLO) thresholds.
The Analog Devices Inc. ADP5055 integrates a high-precision 8-bit digital-to-analog converter (DAC) that enables dynamic voltage scaling (DVS) of the output voltage through a PMBus®-compatible 2-wire interface. The PMBus interface provides additional flexible configurations such as start-up and shutdown sequence control, individual forced pulse width modulation or power-saving mode (FPWM or PSM) selection, output discharge switch and power good signal.
The ADP5055 triple buck regulator is available in a compact 5.0mm x 5.50mm land grid array (LGA) package with a junction temperature range of -40°C to +150°C.
Analog Devices Inc. ADP5055 Features
Wide input voltage range: 2.75V--18.0V
Bias input voltage range: 4.5V--18.0V
PMBus compatible interface with configurable address
FB1 voltage accuracy (default): -0.62% to +0.69% (-40°C≤Tj ≤+125°C)
Channel 1 and Channel 2: 7.0A synchronous buck regulator (9.4A minimum valley current limit threshold)
Channel 1 and Channel 2: 14.0A output, parallel operation
Channel 3: 3.0A Synchronous Buck Regulator (4.2A Minimum Valley Current Limit Threshold)
Adjustable switching frequency range: 250kHz to 2500kHz
External compensation for fast load transient response
Precision Enable Pin, 0.615V Accurate Threshold
8-bit precision DAC for DVS
Adjustable feedback voltage range: 408mV to 790.5mV (1.5mV steps)
Upper and lower threshold limit settings
Programmable power-up and power-down sequencing
Optional active output discharge switch
Selectable FPWM/PSM Mode Selection
Frequency synchronization input or output
Power good flags on optional channels
UVLO, overcurrent protection and TSD protection
Junction Temperature Range: -40°C to +150°C
5.00mm x 5.50mm LGA-43 package
application
small cell base station
Field Programmable Gate Array (FPGA) and Processor Applications
Security and Surveillance
medical application
