Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPTV12020WAH

PTV12020W/L

www.ti.com

SLTS231C –NOVEMBER 2004–REVISED FEBRUARY 2007

16-A, 12-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE

Check for Samples: PTV12020W/L

FEATURES

APPLICATIONS

• Up to 16-A Output Current

• Multivoltage Digital Systems

• 12-V Input Voltage • High-End Computing

• Wide-Output Voltage Adjust • Networking

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

• Efficiencies up to 93%

• 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/IEC/CSA-22.2 60950-1

• POLA™ Alliance Compatible

DESCRIPTION

The PTV12020 series of nonisolated power modules are part of a new class of complete dc/dc switching

regulator modules 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 PTV12020 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 12-V input bus,

the series provides step-down conversion to a wide range of output voltages, at up to 16 A of output current. The

output voltage of the W-suffix parts can be set to any value over the range of 1.2 V to 5.5 V. The L-suffix parts

have an adjustment range of 0.8 V to 1.8 V. The output voltage is set 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 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 13 in the Application Information section.

For start-up into a prebiased output, review page 17 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.

2POLA, 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 (23 pages)

PAGE 1
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 16-A, 12-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE Check for Samples: PTV12020W/L FEATURES APPLICATIONS • • • • • • 1 2 • • • • • • • • • • • Up to 16-A Output Current 12-V Input Voltage Wide-Output Voltage Adjust (1.2 V to 5.5 V)/(0.8 V to 1.
PAGE 2
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
PAGE 3
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 ELECTRICAL CHARACTERISTICS operating at 25°C free-air temperature, VI = 12 V, VO = 3.3 V, C1 = 560 µF, C2 = 22 µF, C3 = 0 µF, and IO = IO(max) (unless otherwise noted) PARAMETER PTV12020W TEST CONDITIONS IO Output current Natural convection airflow VI Input voltage range Over IO load range MIN TYP 0 10.
PAGE 4
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com ELECTRICAL CHARACTERISTICS operating at 25°C free-air temperature, VI = 12 V, VO = 1.8 V, C1 = 560 µF, C2 = 22 µF, C3 = 0 µF, and IO = IO(max) (unless otherwise noted) PARAMETER PTV12020L TEST CONDITIONS IO Output current Natural convection airflow VI Input voltage range Over IO load range MIN TYP 0 10.
PAGE 5
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 PTV12020W Characteristic Data; 1.2 V to 5.5 V EFFICIENCY vs OUTPUT CURRENT OUTPUT VOLTAGE RIPPLE vs OUTPUT CURRENT 150 VO = 5 V VO = 3.3 V V O − Output Voltage Ripple − mV PP 100 Efficiency − % 90 80 VO = 2.5 V VO = 1.8 V 70 VO = 1.5 V VO = 1.2 V 60 50 120 VO = 5 V 90 VO = 3.3 V 30 0 0 2 4 6 8 10 12 14 16 IO − Output Current − A 0 4 6 8 10 12 IO − Output Current − A Figure 1. Figure 2.
PAGE 6
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com PTV12020L Characteristic Data; 0.8 V to 1.8 V EFFICIENCY vs OUTPUT CURRENT OUTPUT VOLTAGE RIPPLE vs OUTPUT CURRENT 100 VO = 1.5 V V O − Output Voltage Ripple − mV PP 100 VO = 1.2 V VO = 1.8 V Efficiency − % 90 80 70 VO = 0.8 V VO = 1 V 60 80 60 VO = 1.8 V 20 VO = 1 V 0 50 0 2 4 6 8 10 12 14 0 16 4 6 VO = 0.8 V 8 10 12 IO − Output Current − A Figure 6. Figure 7.
PAGE 7
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 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 Inhibit VOAdjust 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.
PAGE 8
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com APPLICATION INFORMATION ADJUSTING THE OUTPUT VOLTAGE The VO Adjust control (pin 8) sets the output voltage of the PTV12020 product. The adjustment range is from 1.2 V to 5.5 V for the W-suffix modules and 0.8 V to 1.8 V for L-suffix modules. The adjustment method requires the addition of a single external resistor, RSET, that must be connected directly between the VOAdjust and GND (pin 1 or 2).
PAGE 9
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 Use Equation 1 to calculate the adjust resistor value. See Table 2 for parameters, Rs and Vmin. Equation 1. Output Voltage Adjust Table 2. Adjust Formula Parameters PARAMETER R set + 10 kW 0.8 V V out * V min * R s kW (1) PART NUMBER VMIN (V) PTV12020W PTV12020L 1.2 0.8 VMAX (V) 5.5 1.8 Rs(kΩ) 1.82 7.87 Table 3.
PAGE 10
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com Capacitor Recommendations for the PTV12020 Series of Power Modules Input Capacitors The required input capacitors are a 22-µF ceramic and 560-µF electrolytic type. For VO > 2.1 V and IO ≥ 11 A, the 560-µF capacitance must be rated for 1,200 mArms ripple current capability. For other conditions, VO > 2.1 V at IO < 11 A and VO ≤ 2.1 V for all loads, the ripple current rating must be at least 750 mArms.
PAGE 11
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 Table 4. Input/Output Capacitors Capacitor Characteristics Quantity Working Voltage (V) Value (µF) Max ESR at 100 kHz (Ω) Max Ripple Current at 85°C (Irms) (mA) 25 330 0.090 775 25 560 0.065 1205 12.5 × 15 1 1 EEUFC1E561S 25 1,000 0.060 1100 12.5 × 13.5 1 1 EEVFK1E102Q (VO≤ 3.4V) 35 680 0.060 1100 12.5 × 13.5 1 1 EEVFK1V681Q (VO≤ 3.4V) United Chemi-Con 25 680 0.
PAGE 12
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com Designing for Fast Load Transients The transient response of the dc/dc converter has been characterized using a load transient with a di/dt of 1 A/µs. The typical voltage deviation for this load transient is given in the data sheet specification table using the optional value of output capacitance.
PAGE 13
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 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. Auto-Track was designed to simplify the amount of circuitry required to make the output voltage from each module power up and power down in sequence.
PAGE 14
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com 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. If Track control is not used, the output voltage starts up and overshoots by as much as 10%, before settling at the output voltage setpoint.
PAGE 15
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 Typical Auto-Track Application The basic implementation of Auto-Track allows for simultaneous voltage sequencing of a number of Auto-Track compliant modules. Connecting the Track inputs of two or more modules forces their track input to follow the same collective RC-ramp waveform, and allows their power-up sequence to be coordinated from a common Track control signal.
PAGE 16
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com 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 3.3 µF 4 VI VO PTH12060W Vo 2 = 1.
PAGE 17
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 VTRK (1 V/div) VTRK (1 V/div) V01 (1 V/div) V01 (1 V/div) V02 (1 V/div) V02 (1 V/div) t − Time − 400 µs/div t − Time − 20 ms/div Figure 15. Simultaneous Power Up With AutoTrack Control Figure 16.
PAGE 18
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com VO1 (1 V/div) VO2 (1 V/div) IO2 (5 V/div) t − Time − 10 ms/div Figure 17. Prebias Startup Waveforms 10 9 Up VI = 12 V 2 VI 5 Sense GND 7 1 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 0.68 mF VI GND 7 1 6 Adjust 4 R1 2 kW Tra ck 2 VO PTH12020W Inhibit 3 + 8 Dn Tra ck VO1 = 3.
PAGE 19
PTV12020W/L www.ti.com SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 voltage applied to the Track control pin, the output sinks current during the period that the track control voltage is below that of the back-feeding source. For this reason, it is recommended that Auto-Track be disabled when not being used. This is accomplished by connecting the Track pin to the input voltage, VI.
PAGE 20
PTV12020W/L SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007 www.ti.com Remote Sense Products with this feature incorporate an output voltage sense pin, VOSense. 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. An IR drop is caused by the high output current flowing through the small amount of pin and trace resistance.
PAGE 21
PACKAGE OPTION ADDENDUM www.ti.
PAGE 22
PAGE 23
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.