Digital PoL converters boost FPGA, processor power

Article By : Murata

Murata’s OKDx-T/90 digital PoL converter has non-linear transient response that reduces Vout deviation due to large load changes.

Murata has unveiled its 90A/162W OKDx-T/90 to its OKD digital PoL DC-DC converters module series. 90A/162W OKDx-T/90 provides 6A to 60A solutions, and is suited for FPGA and processor applications. It requires Vin of 7.5V to 14V and provides a user-adjustable Vout 0.6V to 1.8V DC with efficiency of 94%. This series has three different package configurations:

1. SIP measuring just 2.0in x 0.37in x 0.75in (50.8mm x 9.51mm x 19.05mm)
2. Horizontal mounting TH (Through-Hole)
3. SMT versions measuring 2.0in x 0.75in x 0.39in (50.8mm x 19.05mm x 10mm)

The OKDx-T/90 is ideal for space-constrained embedded applications where performance is critical to the application. Critical performance parameters are fully accessible through the PMBus via the Murata Power Design GUI software. The OKDx-T/90-W12 series converters are delivered with a default firmware configuration suitable for a wide operating range in terms of input voltage, output voltage and loading conditions.

 

Figure 1: Surface mount, horizontal through-hole and SIP packages.
 

The converter’s proprietary digital control power management functions include a range of features like its non-linear transient response that enhance the dynamic response time, reducing Vout deviation due to large load changes. Its phase spreading attribute reduces input capacitor requirements and efficiency losses. The synchronisation feature eliminates beat frequency reflection, resulting in less EMI filtering and digital current sharing ensures near 100% current sharing accuracy with up to four modules operating in parallel. The converters provide dynamic loop compensation, where the feedback loop parameters are automatically calculated and configured depending on the unique application-specific operating conditions. Additional standard features include output short circuit, over current, over voltage, over temperature and input under voltage protection. Voltage margining, tracking, power good, remote sense and remote on/off are also features commonly used in advanced power architectures.

The converters are suitable for any application requiring high current processor power, particularly in areas such as networking, computing/servers, telecom, powering FPGAs, CPUs, programmable logic, mixed voltage systems, advanced computing and all distributed power applications.