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News
50A to 300A, Scalable µModule Regulator Needs 60% Less Capacitance to Power Sub-28nm GPUs, FPGAs, ASICs & Processors
2016-09-08 | ReturnCompared to competing power POL module regulators, the LTM4650-1A requires 60% less capacitance because of three main features (12VIN, 1VOUT, 0A to 25A load step, 25A/µs):
(1) Guaranteed ±0.8% total DC voltage accuracy allows more margin (less capacitance) for the AC variation due to a load transient response to satisfy a given processor core voltage tolerance window.
(2) The device can be externally adjusted (compensated) for optimum loop response to deliver load transients with fewer output capacitors. This enables use of important capacitors.
(3) The device operates with phase interleaving, which reduces input and output current ripple, reducing the requirement for load capacitance.
The LTM4650-1 includes a dual output DC/DC regulator, inductors and MOSFETs in a 16mm x 16mm x 5.01mm BGA package. The LTM4650-1 regulates an output voltage ranging from 0.6V to 1.8V from an input voltage within 4.5V to 15V. Delivering 50A, 92% efficiency is recorded at 5VIN, 1.8VOUT and 86% at 12VIN, 1.0VOUT. The LTM4650-1 delivers the full 50A current up to 70℃ ambient, from 12VIN to 1.0VOUT with 200LFM airflow. The LTM4650-1 can be operated in parallel to increase output current, up to six in parallel for 300A of output current. The LTM4650-1 is pin-compatible with the lower current LTM4630-1 (dual 18A or single 36A); so users can choose the correct part depending on load current without changing PCB layout.
The LTM4650-1 is rated for operation from –40ºC to 125ºC. 1,000-piece pricing starts at $46.75 each. For more information, visit http://www.linear.com/product/LTM4650-1
Summary of Features: LTM4650-1
1. ±0.8% Maximum Total DC Output Error Over Line, Load & Temperature (LTM4650-1A)
2. ±3% Total Output Error with Minimum Output Capacitance, Including Transients
3. Dual 25A or Single 50A Output
4. 4.5V to 15V Input, 0.6V to 1.8V Output Voltage Range
5. Differential Remote Sense Amplifier
6. Current Mode Control/Fast Transient Response
7. Current Sharing Up to 300A
8. 16mm × 16mm × 5.01mm BGA Package
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Source:http://www.linear.com/