In the era of high-density integration of digital circuits, the efficiency, flexibility and reliability of power supply systems have become core challenges.
Chipanalog has launched a new CA-PM4644BA wide voltage input four-channel DC/DC buck converter module, which provides high-precision power supply solutions for FPGA, communication storage and other scenarios with three advantages: multiple outputs, flexible expansion and ultra-high integration.
01 Product Overview
CA-PM4644BA is a step-down DC/DC converter with wide input voltage and 4A output for all four channels. The four channels can also be used in parallel to provide a maximum output current of 16A. The device adopts BGA77 package, and integrates switch control circuit, power MOSFET, power inductor, decoupling capacitor and other circuit components. Therefore, only a few external components are required, such as input capacitor, output capacitor, feedback resistor, etc., to form a complete step-down four-way DC/DC regulator. The input voltage range of CA-PM4644BA is 4V~15V, and the output voltage can be set in the range of 0.6V~5.5V by changing the feedback external resistor.
CA-PM4644BA application circuit is often used as a load power supply, which can provide high-precision voltages of different specifications such as 1.0V, 1.2V, 1.5V, 1.8V, 3.3V, 5V, etc. for digital circuits in the whole system, such as FPGA control circuits, motherboards and CPUs, communication storage and other circuits, and provide a maximum output current of 4A. CA-PM4644BA can also flexibly configure 4 channels for parallel use, continuously providing output currents of up to 8A (two-phase parallel) and 16A (four-phase parallel).
02 Features
Multiple outputs, flexible expansion: one "core" meets the needs of multiple scenarios Four-channel independent power supply: single-channel 4A output capacity, four channels can independently power different loads (such as 1.8V/3.3V/5V multi-voltage requirements). Parallel output up to 16A: Four channels can be flexibly connected in parallel, supporting 8A (two-phase) and 16A (four-phase) high current output, suitable for high-power core power supply such as CPU/GPU. Wide voltage coverage: input 4V-15V, output 0.6V-5.5V adjustable, accurately matching the power supply requirements of digital circuits. Highly integrated design: Simplify the system and save space. BGA77 package (9mm×15mm×5.01mm), internally integrated switching circuits, MOSFET, inductors, capacitors and other core components, only a small amount of resistors and capacitors are required on the periphery to work. Reduce PCB area occupation and help high-density circuit design. Efficient and stable: A reliable choice in harsh environments. Efficiency is as high as 95% (5V input, 3.3V/1A output), reducing system power consumption and temperature rise. ±1.5% output voltage accuracy, combined with COT control mode, to achieve fast dynamic response and low ripple. -40℃~125℃ wide temperature operation, supporting industrial and automotive environment applications. Multiple protections: Built-in input overvoltage protection, output overcurrent/overvoltage protection, support soft start and temperature monitoring functions to protect the system from damage to the equipment under abnormal conditions.
03 Typical application scenarios
FPGA/ASIC power supply: provides 1.0V/1.2V low voltage, high-precision power supply for multi-core processors and logic units.
Communication base station and server: Supports multi-channel power management for 5G base station BBU and data center storage modules.
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