May 29, 2015 – Linear Technology Korea (CEO Hong Sa-gwak) announced the launch of the LTM4630-1, a dual 18A or single 36A µModule® (micromodule) that provides high precision output voltage regulation for 28nm and sub-28nm FPGAs. The core voltage of cutting-edge digital devices requires extremely accurate voltage regulation under steady-state (DC) conditions and during fast load current transients. The LTM4630-1 provides precise output voltage regulation under the following two conditions. The first condition (a) provides a maximum total DC error of ±0.8% across line, load, and temperature ranges (–40°C ~ 125°C), while the second condition (b) provides a total error of ±3% with minimal output capacitance including transient conditions. To power high power 28nm and sub-28nm digital devices in the mid-range, the LTM4630-1 can be used in parallel to achieve current sharing up to a maximum of 144A (i.e., 4 devices x 36A). The LTM4630-1 includes a DC/DC regulator, inductor, and MOSFETs in a 16mm x 16mm x 5.01mm BGA package.

The LTM4630-1 adjusts output voltage in the range of 0.6V ~ 1.8V and regulates input voltage range of 4.5V ~ 15V. Users can optimize the transient response of the LTM4630-1, while by adjusting the loop response of the µModule regulator, output capacitance can be reduced with external resistors and capacitors. Using minimal output ceramic capacitors (5 pieces of 220µF), the LTM4630-1's ±3% output voltage regulation window delivers 36A to a 1.2V load while measuring 25% load step transient response at 12VIN. At 20A and 36A load currents with 12VIN, 1.2VOUT, efficiency is 87.5% and 86% respectively. The corresponding power loss values are 3.2W and 6.5W respectively. The LTM4630-1 delivers the full 36A current at a maximum ambient temperature of 60°C from 12VIN ~ 1VOUT with no air flow. Load current decreases by approximately 6A for every 10°C rise in ambient temperature above 60°C.

The LTM4630-1 is offered in two VOUT DC precision grades of ±0.8% and ±1.5%. Based on quantities of 1000 units, pricing is $37.15 and $36.05 per unit respectively. For more information, refer to www.linear.com/product/LTM4630-1.

Dual 18A or Single 36A µModule® Regulator