World’s smallest point of load converters

Jon Lawson

Murata has launched a series of miniature ‘Mono Block’ type surface mount point-of-load (PoL) DC-DC converters

The MYMGK series of non-isolated converters are available in two models, a 6 Amp and a 20 Amp. Each version is available with two output voltage range options for powering FPGAs and CPUs used in data, telecommunications and networking communications equipment, and in equipment using distributed bus architecture.

Measuring just 9.0 x 7.5 x 5.0 mm, the 6 Amp MYMGK1R806FRSR has a programmable output voltage in the range 0.7 to 1.8 VDC from a + 5 VDC input.

The MYMGK00506ERSR also can deliver up to 6 Amp output in the range 0.7 to 5.0 VDC from a + 12 VDC nominal input.

The 20 Amp models measure 10.5 x 9.0 x 5.6 mm and include the MYMGK1R820FRSR, operating from a + 5 VDC nominal input and the MYMGK1R820ERSR, from a + 12 VDC nominal. The output voltage can be programmed in the range 0.7 to 1.8 VDC.

Across the range control signals include remote on/off and a power good indication. Safety and protection features include under input voltage lock out (UVLO), output short circuit and output over current.

The use of increasingly compute intensive devices such as programmable logic, FPGAs and CPU is demanding high reliable power supplies that have can quickly respond to load variations, good transient response, a low core voltage high current supply.

The converters provide fast transient response with a minimum of external output capacitors, helping to reduce the board size of a design.

These highly efficient ultra compact converters, typically between 87.8 % to 95 % model and load dependent, meet the industrial and telecom requirements for size, efficiency and power density, especially in high temperature operation with a high level of thermal derating performance.