Linear Technology Corporation launches a dual output 18a or a single output 36A DC / DC miniature module (μModule) bucking regulator LTM4630, which provides up to 144A when 4 devices are currently flowing. The LTM4630 is a complete DC / DC regulator system with 16mm x 16mm x 4.41mm LGA encapsulation, including inductors, MOSFETs, DC / DC controllers, and compensation circuits. The device adopts high-efficiency and low calorie encapsulation impedance. When 1 Vin is generated from 36A, the efficiency is 86%, and the efficiency is 88% at 5 Vin. The LTM4630 provides 36A without the need for an external heat sink (no air flow), 65 ° C (200LFM) and 69 ° C (400LFM). If you use an external heat sink, the highest working ambient temperature can increase approximately 10 ° C.
The LTM4630 has excellent heat dissipation, scalable and large output power capabilities, which are small, and flat packages, thus enable system designers to enable alignment of more dense circuit boards. Typical applications include Mezzanine boards (eg, ATCA and μTCA); for new processors, ASICs, and recently launched load points for less than 28 nm FPGAs; and high speed serdes.
System designers do not need to change the printed circuit board layout, they can exchange 4 pin-compatible microforms regulators to achieve different power levels: LTM4628 dual output (8A), LTM4620 and LTM4620A (dual output 13a) and LTM4630 (Dual Output 18a). The output of each product is running in phase of 180 ° to minimize output ripple (when output is output) and input ripple, so that the number and volume of more fiberly can be used.
The LTM4630 is used to convert 12 VIN to high power (up to 144A) load point voltages as low as 0.6V. The input voltage ranges from 4.5V to 15V (maximum of 16V), and the output range is from 0.6V to 1.8V. The internal distal detection amplifier passes the voltage drop caused by the voltage of the load end and compensates for the voltage drop caused by the printed circuit board, and provides an output adjustment of ± 1.5% accuracy over the entire temperature, voltage and load.
The LTM4630 provides fast short circuit protection, which minimizes Iout to prevent the micro module regulator from overheating and protect the load and upstream power. Once the short circuit is eliminated, the LTM4630 recovers work. The rated operating temperature of the LTM4630 ranges from -40 ° C to 125 ° C. A thousand batches is $ 35.05 per piece.
Single output 36A, dual output 18a, up to 144A DC / DC μModule buck type regulator
Overview of performance: LTM4630
● Dual output 18a or single output 36A
● Input voltage range: 4.5V to 15V
● Output voltage range: 0.6V to 1.8V
● The maximum total DC output error is ± 1.5% over the entire voltage, load and temperature range.
● Differential distal detection amplifier
● Current mode control / fast transient response
● Adjustable switching frequency
● Cross-flow
● Using multiple LTM4630 to achieve multi-phase consolidated joint flow, current can be as high as 144A
● Frequency synchronization
● Internal Temperature Monitor
● Compatible with LTM4620 and LTM4620A (dual output 13a, single output 26a), and LTM4628 (dual output 8a, single output 16a) pin
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