Analog Devices Inc. DC3248A Evaluation Board for LTM4659
Analog Devices DC3248A Evaluation Board circuit features the LTM4659, a high-efficiency, 10A step-down power μModule® regulator. The input voltage range is 2.25V to 5.5V, and the output voltage range is 0.5V to VIN. A derating may be necessary for specific VIN, VOUT, frequency, and thermal conditions. The DC3248A evaluation board offers the SSTT pin, allowing users to program output tracking, soft start period, and monitor die temperature.
The MODE/SYNC pin synchronizes the switching frequency to an external clock. It is a clock output or sets the PWM mode. It can be externally synchronized to a clock from 1MHz to 2.6MHz. The Pulse Width Modulation (PWM) modes of operation are Forced Continuous Mode (FCM) for low noise or Pulse-Skipping Mode (PSM) for high efficiency at light load. The LTM4659 defaults to FCM during synchronization and operates in PSM when the FREQ and MODE/SYNC pins are connected to VIN.
The LTM4659 uses external compensation. Users can tune the compensation circuit to ensure the loop is stable and that the desired transient performance can be achieved. For output loads that demand more than 10A of current, multiple LTM4659s can be paralleled to run out-of-phase to provide more output current without increasing input and output voltage ripples. The LTM4659 data sheet must be read with this evaluation board manual before working on or modifying the Analog Devices DC3248A evaluation board.
Features
- Tiny surface mount, 4mm × 4mm × 1.43mm LGA
- Silent Switcher®2 architecture
- Ultralow Electromagnetic Interference (EMI) noise
Required Equipment
- One 0V to 30V DC, 20A power supply
- Electronic load with 20A sink capacity
- Four digital multimeters (DMM)
Additional Resources
Board Layout
Related Product
Analog Devices Inc. LTM4659 10A Step-Down DC-DC μModule® Regulator
The device includes power MOSFETs, a switching controller, the inductor, and all support components.