特性 Features

? Up to 22-A Output Current

? 3.3-V Input Voltage

? Wide-Output Voltage Adjust

(0.8 V to 2.5 V)

? Efficiencies up to 93 %

? 120 W/in3 Power Density

? On/Off Inhibit

? Output Voltage Sense

? Pre-Bias Startup

? Margin Up/Down Controls

? Under-Voltage Lockout

? Auto-Track? Sequencing

? Output Over-Current Protection

(Non-Latching, Auto-Reset)

? Over-Temperature Protection

? Operating Temp: –40 to +85 °C

? IPC Lead Free 2

? Safety Agency Approvals:

UL 1950, CSA 22.2 950, EN60950

VDE (Pending)

? Point-of-load Alliance (POLA)

Compatible

描述 Description

The PTH03020 series of non-isolated

power modules offers OEM designers a

combination of high performance, small

footprint, and industry leading features.

As part of a new class of power modules

these products provide designers with the

flexibility to power the most complex

multi-processor digital systems using

off-the-shelf catalog parts.

The series employs double-sided surface

mount construction and provides highperformance

step-down power conversion

for up to 22 A of output current from a

3.3-V input bus voltage. The output voltage

of the PTH03020W can be set to

any value over the range, 0.8 V to 2.5 V,

using a single resistor.

This series includes Auto-Track?.

Auto-Track simplifies the task of supply

voltage sequencing in a power system by

enabling modules to track each other, or

any external voltage, during power up and

power down.

Other operating features include an

on/off inhibit, output voltage adjust (trim),

and margin up/down controls. To ensure

tight load regulation, an output voltage

sense is also provided. A non-latching

over-current trip and over-tempterature

shutdown provide load fault protection.

Target applications include complex

multi-voltage, multi-processor systems

that incorporate the industry’s high-speed

DSPs, micro-processors and bus drivers.