GXSC Power Module Regulator Replaces LTM4644 for DSP Applications

In the design of Digital Signal Processing (DSP) systems, the stability, efficiency, and integration of the power supply module directly impact the core performance of the system. The GXSC‘s four-channel DC/DC step-down micro-module voltage regulator features multi-channel output and high-precision regulation, making it an ideal power module for complex power supply scenarios in FPGA, DSP, and ASIC applications.

The GXSC voltage regulator employs a miniature module package, with outputs that can be connected in parallel to form an array, delivering up to 16A current capability. This design meets the power supply requirements of DSPs across various power levels. The package integrates a switching controller, power FET, inductor, and supporting components.

In terms of voltage regulation, the GXSC voltage regulator chip operates within an input voltage range of 4V to 14V or 2.375V to 14V (using an external bias power supply), supporting an output voltage range of 0.6V to 5.5V. Its high-efficiency design enables each channel to deliver 4A continuous (5A peak) output current, requiring only large-capacity input and output capacitors, making it suitable for multi-voltage rail requirements of DSP cores and peripherals. Additionally, the wide operating temperature range of -40°C to 125°C, along with triple protection mechanisms against overvoltage, overcurrent, and overtemperature, further enhances reliability in industrial environments.

Main features of the GXSC voltage regulator:

Each output channel can provide a current of 4A

Four-Channel Output Step-Down μModule Regulator

Wide input voltage range: 4V to 14V

2.375V to 14V (external set)

Output voltage range: 0.6V to 5.5V

Each channel can provide a 4A DC and 5A peak output current

Maximum power consumption of 5.5W (TA=60°C, no heatsink)

Voltage regulation with ±1.5% accuracy

Current mode control, fast transient response

Higher output current can be achieved by paralleling

Output voltage tracking function

Internal temperature detection diode output

External frequency synchronization

Overvoltage, overcurrent, and overtemperature protection

Supports 9mm x 15mm x 5.01mm BGA package

In summary, the GXSC voltage regulator perfectly meets the power supply requirements of DSP systems through features such as multi-channel independent regulation, high-precision voltage stabilization, and high integration. Its successful application cases in multi-rail load regulation, FPGA, DSP, and ASIC fields fully validate the engineering reliability of this device.