Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPTV03020WAH

18-A, 3.3-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE

FEATURES APPLICATIONS

DESCRIPTION

PTV03020W

SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007

www.ti.com

• Multivoltage Digital Systems

• Up to 18-A Output Current

• High-Density Logic Circuits

• 3.3-V Input Bus

• High-End Computers and Servers

• Wide-Output Voltage Adjust

• 3.3-V Intermediate Bus Architectures

(0.8 V to 2.5 V)

• Efficiencies up to 96%

• On/Off Inhibit

• Output Voltage Sense

• Prebias Start-Up

• Undervoltage Lockout

• Auto-Track™ Sequencing

• Output Overcurrent Protection

(Nonlatching, Auto-Reset)

• Overtemperature Protection

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

• Safety Agency Approvals:

UL/cUL 60950, EN60950 VDE

• POLA™ Compatible

The PTV03020W is a ready-to-use nonisolated power module, and part of a new class of complete dc/dc

switching regulators from Texas Instruments. These regulators combine high performance with double-sided,

surface-mount construction, to give designers the flexibility to power the most complex multiprocessor digital

systems using off-the-shelf catalog parts.

The PTV03020W series is produced in a 12-pin, single in-line pin (SIP) package. The SIP footprint minimizes

board space, and offers an alternate package option for space conscious applications. Operating from a 3.3-V

input bus, the series provides step-down conversion to a wide range of output voltages, at up to 18 A of output

current. The output voltage can be set to any value over the range, 0.8 V to 2.5 V, using a single external

resistor.

This series includes Auto-Track™. Auto-Track simplifies the task of supply-voltage sequencing in a power

system by enabling the output voltage of multiple modules to accurately track each other, or any external voltage,

during power up and power down.

Other operating features include an on/off inhibit, and the ability to start up into an existing output voltage or

prebias. For improved load regulation, an output voltage sense is provided. A nonlatching overcurrent trip and

overtemperature shutdown protect against load faults.

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

high-speed microprocessors, bus drivers, and the TMS320™ DSP family.

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, Auto-Track, 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 (19 pages)

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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 18-A, 3.3-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE FEATURES APPLICATIONS • Up to 18-A Output Current • 3.3-V Input Bus • Wide-Output Voltage Adjust (0.8 V to 2.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 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. STANDARD APPLICATION VOSense Track 9 Track VI 5, 6 PTV03020W VI Inhibit GND 12 C1* 680 mF (Required) Inhibit 7 Sense GND 10, 11 VO VO 3, 4 VOAdj 1, 2 C2* 22 mF Ceramic (Required) 8 C3* 330 mF (Optional) RSET# 1% 0.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 ELECTRICAL CHARACTERISTICS operating at 25°C free-air temperature, VI = 3.3 V, VO = 2.5 V, C1 = 680 µF, C2 = 22 µF, C3 = 0 µF, and IO = IO max (unless otherwise noted) PARAMETER TEST CONDITIONS IO Output current Natural convection airflow VI Input voltage range Over IO load range MIN TYP MAX 0 2.95 (2) Set-point voltage tolerance VO η IO (trip) A 3.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 TYPICAL CHARACTERISTICS (3.3-V INPUT) (9) (10) EFFICIENCY vs OUTPUT CURRENT OUTPUT VOLTAGE RIPPLE vs OUTPUT CURRENT 100 VO- Output Ripple Voltage - mVPP 50 Efficiency - % 90 80 VO = 2.5 V VO = 1.5 V 70 VO = 1 V VO = 0.8 V 60 40 30 VO = 1.5 V 20 10 VO = 2.5 V VO = 0.8 V 0 50 0 3 6 9 12 15 18 0 3 IO - Output Current - A 6 9 12 15 18 IO - Output Current - A Figure 1. Figure 2.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 DEVICE INFORMATION TERMINAL FUNCTIONS TERMINAL DESCRIPTION NAME NO. VI 5, 6 The positive input voltage power node to the module, which is referenced to common GND. VO 3, 4 The regulated positive power output with respect to the GND node. GND 1, 2, 10, 11 This is the common ground connection for the VI and VO power connections. It is also the 0-Vdc reference for the control inputs.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 APPLICATION INFORMATION Capacitor Recommendations for the PTV03020W Power Module Input Capacitors The required input capacitors are a 22-µF ceramic and a minimum of 680-µF electrolytic type. For VO > 1 V and IO > 11 A , the 680-µF capacitance must be rated for 750 mArms ripple current capability. For all other conditions, the ripple current rating must be at least 500 mArms.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 Capacitor Table Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The recommended number of capacitors required at both the input and output buses is identified for each capacitor type. Note: This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 Table 1. Input/Output Capacitors (continued) Capacitor Characteristics Capacitor Vendor, Type/Series (Style) TDK, Ceramic X5R (SMD) Quantity Working Voltage (V) Value (µF) Max ESR at 100 kHz (Ω) Max Ripple Current at 85°C (Irms) (mA) 6.3 100 0.002 — 6.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 VOSense VO VO PTV03020W GND GND VOAdj CO RSET, 1% GND Figure 6. VO Adjust Resistor Placement Table 3. Calculated Values of RSET for Other Output Voltages (1) VO RSET VO RSET 0.800 Open 1.450 9.82 kΩ 0.825 318 kΩ 1.500 8.94 kΩ 0.850 158 kΩ 1.550 8.18 kΩ 0.875 104 kΩ 1.600 7.51 kΩ 0.900 77.5 kΩ 1.650 6.92 kΩ 0.925 61.5 kΩ 1.700 6.40 kΩ 0.950 50.8 kΩ 1.750 5.93 kΩ 0.975 43.2 kΩ 1.800 5.51 kΩ 1.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 Features of the PTH/PTV Family of Nonisolated, Wide-Output Adjust Power Modules POLA™ Compatibility The PTH/PTV family of nonisolated, wide-output adjustable power modules from Texas Instruments are optimized for applications that require a flexible, high-performance module that is small in size. Each of these products are POLA™ compatible.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 From the moment a valid input voltage is applied, the soft-start control introduces a short time delay (typically less than 5 ms) before allowing the output voltage to rise. The output then progressively rises to the module set-point voltage. Figure 8 shows the soft-start power-up characteristic of the PTV03020W, operating from a 3.3-V input bus and configured for a 1.8-V output.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 VO (1 V/div) II (5 A/div) Q1 VDS (5 V/div) t - Time = 5 ms/div Figure 10. Inhibit Waveform Overcurrent Protection (OCP) For protection against load faults, the modules incorporate output overcurrent protection. Applying a load that exceeds the overcurrent threshold causes the regulated output to shut down. Following shutdown, a module periodically attempts to recover by initiating a soft-start power up.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 volt-for-volt basis. By connecting the Track pin of a number of these modules together, the output voltages follow a common signal during power up and power down. The control signal can be an externally generated master ramp waveform, or the output voltage from another power supply circuit (3). For convenience, the Track input incorporates an internal RC-charge circuit.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 2 U1 Track +3.3 V 3 VO PTH03050W Inhibit GND 4 1 Adjust 5 + + C I1 U3 3 2.21 kΩ 5 SENSE C4 0.1 µF RESET 4 1 TPS3808G33 R TRK # 50 Ω CT 10 U2 GND C3 CO1 RSET1 6 VCC MR Vo1 = 2.5 V 6 VI 9 Up Dn 8 5 Track Sense 2 4700 pF 2 VI VO PTH03060W Inhibit 3 Adjust GND 1 7 4 + # RTRK = 100 Ω / N N = Number of Track pins connected together C I2 Vo2 = 1.2 V 6 RSET2 + CO2 17.4 kΩ Figure 11.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 Prebias Start-Up Capability A prebias start-up condition occurs as a result of an external voltage being present at the output of a power module prior to its output becoming active. This often occurs in complex digital systems when current from another power source is backfed through a dual-supply logic component, such as an FPGA or ASIC.
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PTV03020W www.ti.com SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007 ground signal applied to the Inhibit control input), the input voltage must always be greater than the applied prebias source. This condition must exist throughout the power-up sequence of the power system. VI = 3.3 V Track VI Sense VO = 1.5 V PTV03020W GND VO + Vadj IO VCCIO VCORE + C2 C1 RSET 8.87 kW + C3 ASIC Figure 16.
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PACKAGE OPTION ADDENDUM www.ti.com 13-Nov-2010 PACKAGING INFORMATION Orderable Device PTV03020WAH Status (1) ACTIVE Package Type Package Drawing SIP MODULE EVC Pins Package Qty 12 40 Eco Plan (2) Pb-Free (RoHS) Lead/ Ball Finish SN MSL Peak Temp (3) Samples (Requires Login) N / A for Pkg Type Request Free Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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