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1FEATURES

2· Up to 18 A Output Current

· 12-V Input Voltage

· Wide-Output Voltage Adjust

(1.2 V to 5.5 V/(0.8 V to 1.8 V)

· Efficiencies up to 95%

· 195 W/in3 Power Density

· On/Off Inhibit

· Output Voltage Sense

· Pre-Bias Startup

· Under-Voltage Lockout

· Auto-Track? Sequencing

· Margin Up/Down Controls

· Output Over-Current Protection

(Non-Latching, Auto-Reset)

· Over-Temperature Protection

· Operating Temperature: –40°C to 85°C

· Point-of-Load Alliance (POLA?) Compatible

· Safety Agency Approvals:

UL/IEC/CSA-22.2 60950-1

APPLICATIONS

· Complex multi-voltage, multi-processor

systems

DESCRIPTION

The PTH12020 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 18A of output current from a 12-V input bus voltage. The output voltage of the W-suffix parts

can be set to any value over the range, 1.2V to 5.5V. The L-suffix parts have an adjustment range of 0.8V to

1.8V. The output voltage is set using a single resistor.

This series includes Auto-Track? sequencing. Auto-Track sequencing 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), margin up/down

controls, and the ability to start up into an existing output voltage or prebias. For improved load regulation, an

output voltage sense is provided. A non-latching over-current trip and overtemperature shutdown feature protects

against load faults.

Target applications include complex multivoltage, multiprocessor systems that incorporate the industry's

high-speed DSPs, microprocessors and bus drivers.

For start-up into a non-prebiased output, review page 14 in the Application Information section.

For start-up into a prebiased output, review page 18 in the Application Information section.