PI3101-00-HVIZ【PDF 1/18 页】DC/DC CONVERTER 3.3V 18A SMD

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Series

Cool-Power

PI3101

36-75V Input, 3.3V / 18A / 60W Output

Very High Density Isolated DC-DC Converter (400W/in 3 )

Description

The Cool-Power TM PI3101 is a very high density

isolated DC-DC converter implementing a high

efficiency soft-switching power architecture. The

Features

? Efficiency up to 87%

? High switching frequency minimizes input filter

PI3101 operates over a wide range input of 36V to

75Vdc, delivering ~60W of output power (3.3Vout @

18A), yielding an unprecedented power density of

400W/in 3 . The PI3101 is available in a space saving

surface mountable 0.87” x 0.65” x 0.265” package,

achieving ~50% space reduction versus

conventional solutions.

The switching frequency of 900kHz allows for small

input and output filter components which further

reduces the total size and cost of the overall system

solution. The output voltage is sensed and fed back

to the internal controller using a proprietary isolated

magnetic feedback scheme which allows for high

bandwidth and good common mode noise immunity.

The PI3101 requires no external feedback

compensation and offers a total solution with a

minimum number of external components. A rich

requirements and reduces output capacitance

Proprietary “Double-Clamped” ZVS Buck-Boost

Topology

Proprietary isolated magnetic feedback

Small footprint (0.57 in 2 ) enables PCB area

savings

Very low profile (0.265 in)

Wide input voltage range operation (36-75Vdc)

On/Off Control, positive logic

+10/-10% Trim

Temperature Monitor (TM) & Over-Temperature

Protection (OTP)

Input UVLO & OVLO and output OVP

Over current protection with auto restart

Adjustable soft-start

2250V input to output isolation

feature set is offered, including output voltage trim

Applications

capability, output over-voltage protection, adjustable

soft-start, over-current protection with auto-restart,

over and under input voltage lockout and a

temperature monitoring and protection function that

provides an analog voltage proportional to the die

Power Over Ethernet (PoE)

Communications

Telecom Systems

Network Power

temperature as shut down and alarm capabilities.

Package Information

Surface Mountable 0.87” x 0.65” x 0.265”

package

Typical Application Schematic Diagram

PI3101-00-HVIZ

36-75Vin, 3.3Vout, 18A

Very High Density Isolated DC-DC Converter

Figure 1 Picor PI3101 Shown With System Fuse, Filter,

Decoupling And Extended Soft Start

Picor Corporation ? picorpower.com

PI3101-00-HVIZ

Rev 1.1, April 29 th , 2010

Page 1 of 18

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