IR Voltage Regulators Offer Increased Efficiencies
International Rectifier (IR) has expanded its Supirbuck range of point-of-load (POL) voltage regulators for energy-efficient high-performance server, storage, telecom and netcom applications. The new devices are said to offer greater efficiency and functionality over previous generation devices for energy saving and easy on-board implementation. The IR3837M, IR3838M and IR3839M Supirbuck voltage regulators and trackers integrate a high-performance controller with latest generation IR Mosfets in a slim 5mm x 6mm PQFN package.
They deliver 14A, 10A and 6A output current respectively to achieve more than 96 per cent peak efficiency. Features include single-rail input voltage of 4.5V to 16V, external reference for margining purposes, internal digital soft-start, plus external synchronisation to reduce noise and EMI in multi-rail systems. The devices are configurable for DDR memory tracking or sequencing and offer Power Good output for under-voltage and over-voltage detection with tracking capability to eliminate the numerous external components typically required to implement these functions with alternative solutions.
A +/-1 per cent accurate 0.6V reference in 0-125C temperature range is also offered for very precise regulation, as well as a 5V external bias option to improve light load efficiency. The devices eliminate the need for traditional dual-stage POL conversion and save energy, size and cost by operating directly from 12Vin. While optimised for 12V input voltage, high efficiencies are also achieved in applications with 9.6V, 5V or 3.3V input voltages. As a result of programmable switching frequencies up to 1.5MHz and small footprint, the new voltage regulators shrink size and cost, in addition to achieving higher power density.
Moreover, the common footprint of the devices provides design flexibility and allows cut-and-paste layout for fast time to market. Additional Supirbuck features include programmable hiccup current limit, enhanced pre-bias start up, thermal protection, enable pin with voltage monitoring capability and a -40C to 125C operating junction temperature (Tj). Datasheets and application notes are posted on the International Rectifier website. The IRDC3837, IRDC3838 and IRCD3839 Supirbuck reference designs are also available.
An interactive, web-based tool is also offered to enable the rapid selection and simulation of selected Supirbuck products. Based on a designer's given input and output parameters, the Supirbuck online tool selects suitable devices for a given application. Once basic requirements are entered, the tool allows the user to capture schematics, create a reference design along with associated bill of materials (BOM), view waveforms and perform complex thermal and application analysis quickly to accelerate development time.
They deliver 14A, 10A and 6A output current respectively to achieve more than 96 per cent peak efficiency. Features include single-rail input voltage of 4.5V to 16V, external reference for margining purposes, internal digital soft-start, plus external synchronisation to reduce noise and EMI in multi-rail systems. The devices are configurable for DDR memory tracking or sequencing and offer Power Good output for under-voltage and over-voltage detection with tracking capability to eliminate the numerous external components typically required to implement these functions with alternative solutions.
A +/-1 per cent accurate 0.6V reference in 0-125C temperature range is also offered for very precise regulation, as well as a 5V external bias option to improve light load efficiency. The devices eliminate the need for traditional dual-stage POL conversion and save energy, size and cost by operating directly from 12Vin. While optimised for 12V input voltage, high efficiencies are also achieved in applications with 9.6V, 5V or 3.3V input voltages. As a result of programmable switching frequencies up to 1.5MHz and small footprint, the new voltage regulators shrink size and cost, in addition to achieving higher power density.
Moreover, the common footprint of the devices provides design flexibility and allows cut-and-paste layout for fast time to market. Additional Supirbuck features include programmable hiccup current limit, enhanced pre-bias start up, thermal protection, enable pin with voltage monitoring capability and a -40C to 125C operating junction temperature (Tj). Datasheets and application notes are posted on the International Rectifier website. The IRDC3837, IRDC3838 and IRCD3839 Supirbuck reference designs are also available.
An interactive, web-based tool is also offered to enable the rapid selection and simulation of selected Supirbuck products. Based on a designer's given input and output parameters, the Supirbuck online tool selects suitable devices for a given application. Once basic requirements are entered, the tool allows the user to capture schematics, create a reference design along with associated bill of materials (BOM), view waveforms and perform complex thermal and application analysis quickly to accelerate development time.
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