PTH12020L数据手册电源-板安装的直流转换器规格书PDF

描述 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.

特性 Features

• 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

POLA, TMS320 are trademarks of Texas Instruments.