Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPTH12020LAH

18-A, 12-V INPUT NON-ISOLATED WIDE-OUTPUT

FEATURES APPLICATIONS

NOMINAL SIZE = 1.5 in x 0.87 in

(38,1 mm x 22,1 mm)

DESCRIPTION

PTH12020W/L

www.ti.com

............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009

ADJUST POWER MODULE

• Complex multi-voltage, multi-processor

• Up to 18 A Output Current

systems

• 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/in

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

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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2 POLA, TMS320 are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (27 pages)

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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 18-A, 12-V INPUT NON-ISOLATED WIDE-OUTPUT ADJUST POWER MODULE FEATURES APPLICATIONS • 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.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 ELECTRICAL CHARACTERISTICS TA = 25°C, VI =12 V, VO = 3.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com ELECTRICAL CHARACTERISTICS TA = 25°C, VI =12 V, VO = 1.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 PTH12020W TYPICAL CHARACTERISTICS (VI = 12 V) (1) (2) EFFICIENCY vs LOAD CURRENT OUTPUT RIPPLE vs LOAD CURRENT 100 100 POWER DISSIPATION vs LOAD CURRENT 6 VO = 1.2 V VO = 1.5 V VO = 1.8 V VO = 2 V VO = 2.5 V VO = 3.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com PTH12020W TYPICAL CHARACTERISTICS (VI = 12 V) (1) (2) EFFICIENCY vs LOAD CURRENT OUTPUT RIPPLE vs LOAD CURRENT (See Note A) (See Note A) VO = 1.5 V VO = 1.2 V VO = 1.8 V VO = 1.8 V 4 Output Ripple − mV 80 VO = 1 V VO = 0.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 DEVICE INFORMATION TERMINAL FUNCTIONS TERMINAL NAME DESCRIPTION NO. VI 2 The positive input voltage power node to the module, which is referenced to common GND. VO 6 The regulated positive power output with respect to the GND node.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com APPLICATION INFORMATION ADJUSTING THE OUTPUT VOLTAGE The VOAdjust control (pin 4) sets the output voltage of the PTH12020W/L. The adjustment range is from 1.2 V to 5.5V for the W-suffix modules, and 0.8V to 1.8V for L-suffix modules.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 Table 3. Output Voltage Set-Point Resistor Values PTH12020W PTH12020L VOUT (V) RSET (kΩ) VOUT (V) RSET (kΩ) VOUT RSET (kΩ) 1.200 Open 2.70 3.51 0.800 Open 1.225 318.0 2.75 3.34 0.825 312.0 1.250 158.0 2.80 3.18 0.850 152.0 1.275 105.0 2.85 3.03 0.875 98.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com Capacitor Recommendations for the PTH12020 Series of Power Modules Input Capacitor The recommended input capacitance is determined by the 560 µF minimum capacitance and 800 mArms minimum ripple current rating.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 Table 4.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com Designing for Very Fast Load Transients The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1A/µs.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 Features of the PTH Family of Non-Isolated Wide Output Adjust Power Modules Introduction The PTH/PTV family of non-isolated, wide-output adjustable power modules are optimized for applications that require a flexible, high performance module that is small in size.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com POWER-UP INTO A NON-PREBIASED OUTPUT — AUTO-TRACK™ FUNCTION The Auto-Track function is unique to the PTH/PTV family, and is available with all POLA products.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 Q1VDS (2 V/div) VO (2 V/div) II (2 A/div) t − Time − 40 ms/div Figure 13. Power-Up from Track Control NOTE: If a prebias condition is not present, it is highly recommended that the Track control pin be used for controlled power-up and power-down.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com Typical Auto-Track Application The basic implementation of Auto-Track allows for simultaneous voltage sequencing of a number of Auto-Track compliant modules.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 2 U1 Track VI = 12 V 3 Vo 1 = 3.3 V 6 VI VO PTH12050W Inhibit GND 4 1 Adjust 5 + + CI1 CO1 RSET1 2.0 kΩ 8 U3 VCC 7 SENSE RESET 2 5 RTRK # RESIN 1 3 50 Ω TL7712A REF 0.1 µF 9 Up Dn RESET 8 5 Track Sense CT 2 GND CREF 10 U2 6 CT 3.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com POWER-UP INTO A PREBIASED OUTPUT — START-UP USING INHIBIT CONTROL The capability to start up into an output prebias condition is now available to all the 12-V input, PTH series of power modules. (Note that this is a feature enhancement for the many of the W-suffix products) [1].
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 10 9 Up VI = 12 V 2 VI 5 Sense GND 1 7 C1 330 mF 10 9 R3 11 k0 TL7702B 8 7 R4 100 kW C5 0.1 mF PTH12010L Inhibit 3 8 VCC SENSE 5 RESET 2 RESIN 1 REF 6 RESET 3 CT GND 4 R5 C6 10 k0 0.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.com Remote Sense Products with this feature incorporate an output voltage sense pin, VO Sense. A remote sense improves the load regulation performance of the module by allowing it to compensate for any IR voltage drop between its output and the load.
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PTH12020W/L www.ti.com ............................................................................................................................................................. SLTS208I – MAY 2003 – REVISED MARCH 2009 Margin Up/Down Controls The PTH12060, PTH12010, PTH12020, and PTH12030 products incorporate Margin Up and Margin Down control inputs. These controls allow the output voltage to be momentarily adjusted [1], either up or down, by a nominal 5%.
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PTH12020W/L SLTS208I – MAY 2003 – REVISED MARCH 2009 ............................................................................................................................................................. www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
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