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.