Analog Devices Inc. ADP5014 Integrated Power Solution

Analog Devices Inc. ADP5014 Integrated Power Solution incorporates four high-performance, low-noise buck regulators. Due to its low output noise (~25μ Vrms when V_OUT ≤ V_REF), the buck regulators enable the powering up of the noise-sensitive signal chain products. Each channel of the ADP5014 includes high-side and low-side power MOSFETs. Channel 1 and Channel 2 provide a programmable output current of 2A or 4A. ADP5014's Channel 3 and Channel 4 have a programmable output current of 1A or 2A. Combining Channel 1 and Channel 2 or Channel 3 and Channel 4 in parallel configuration can deliver a single output with up to 8A or 4A respectively. Designers can program or synchronize the ADP5014's switching frequency from 500kHz to 2.5MHz using an external clock. The ADP5014 from Analog Devices offers two enable modes. The manual mode has four individual precision enable pins to enable each regulator manually. Alternatively, the sequence mode has one grouped precision enable signal with programmable power-up and power-down delay timers on each rail for specific rail sequence requirements.

Features

2.75V to 6V input voltage range
0.5V to 0.9 × PVINx programmable output voltage range
~25μVrms output noise when V_OUT ≤ V_REF
±1.0% output accuracy over full temperature range
500kHz to 2.5MHz adjustable switching frequency
Power Regulation
- Channel 1 and Channel 2: programmable 2 A/4 A sync buck regulators, or single 8 A output in parallel
- Channel 3 and Channel 4: programmable 1 A/2 A sync buck regulators, or single 4 A output in parallel
Flexible parallel operation
Precision enable with 0.6V threshold

Manual or sequence mode for power-up and power-down sequence
Selective FPWM or PSM operation mode
Precision undervoltage comparator
Frequency synchronization input or output
Active output discharge switch
Power-good flag on selective channels via factory fuse
UVLO, OVP, OCP, and TSD protection
40-lead, 6mm × 6mm LFCSP package
−40°C to +125°C junction temperature

Applications

RF transceiver, high-speed analog-to-digital converter (ADC)/digital-to-analog converter (DAC), mixed-signal ASIC
FPGA and processors

Security and surveillance
Medical

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. ADP5014 Integrated Power Solution

Additional Resources

Article - Comprehensively Understand and Analyze Switching Regulator Noise

Modeling and Control for a Current-Mode Buck Converter with a Secondary LC Filter

Modern signal processing system design utilizing ADCs, PLLs, and RF transceivers demands lower power consumption and higher system performance. Selecting proper power supplies for those noise sensitive devices is always the pain point for system designers. There is always a trade-off between high efficiency and high performance.

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