Power Electronics

Multiphase Boost Controller Delivers High Power

Linear Technology’s LTC3862 is a 2-phase boost controller that delivers high output power, enabling up to 12 power stages (12 phases) to be paralleled and clocked out-of-phase to minimize input and output filtering requirements.

Device type: 2-phase boost controller
Input voltage range: 4 V to 36 V
Output voltage: depends on choice of external components
Quiescent Current: 3 mA max (80 µA in shutdown)
Efficiency: controller can regulate a 48-V at 5-A output with up to 97% efficiency from an input source ranging from 12 V to 36 V using only two-phases
Features: peak-current mode architecture allows easy loop compensation and multi-phase operation with accurate phase-to-phase current matching; fixed programmable operating frequency from 75 kHz to 500 kHz; synchronizable with phase-lock-loop from 50 kHz to 650 kHz; adjustable soft-start; programmable maximum duty cycle; on-board 5-V LDO; undervoltage lockout protection; a precise RUN pin threshold with programmable hysteresis; user-adjustable leading edge blanking.
Operating temperature range: -40°C to 85°C, -40°C to 125°C, or -40°C to 150°C
Packaging: narrow SSOP-24 and 5-mm x 5-mm QFN-24 packages
RoHS compliant? yes
Target applications: high-power audio amplifiers, automotive fuel-injection systems, networking and industrial power supplies
Pricing: starts at $3.29 each in quantities of 1000.
Availability: available now

Data sheet posted on web? yes, see http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1042,C1031,C1115,P85098,D26473
TAGS: Products
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