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PTH05020W —5-V Input

22-A, 5-V Input Non-Isolated

Wide-Output Adjust Power Module

SLTS207C – MAY 2003 – REVISED DECEMBER 2003

Standard Application

Features

• Up to 22 A Output Current

• 5-V Input Voltage

• Wide-Output Voltage Adjust

(0.8 V to 3.6 V)

• Efficiencies up to 96 %

• 155 W/in³ Power Density

• On/Off Inhibit

• Output Voltage Sense

• Pre-Bias Startup

• Margin Up/Down Controls

• Under-Voltage Lockout

Rset = Required to set the output voltage to a value

higher than 0.8 V. (See spec. table for values)

= Required electrolytic 1,000 µF

out

= Optional 330 µF electrolytic

• Auto-Track™ Sequencing

• Output Over-Current Protection

(Non-Latching, Auto-Reset)

• Over-Temperature Protection

• Operating Temp: –40 to +85 °C

• IPC Lead Free 2

• Safety Agency Approvals:

UL 1950, CSA 22.2 950, EN60950

VDE (Pending)

• Point-of-Load Alliance (POLA)

Compatible

Margin Up

Margin Down

1,000 µF

(Required)

OUT

330 µF

(Optional)

Inhibit

GND

OUT

Sense

Track

SET

(Required)

0.1 W, 1 %

PTH05020W

(Top View)

10 9 8

543

Auto-Track™

Sequencing

Pin Configuration

Pin Function

1 GND

3 Inhibit *

Adjust

Sense

out

7 GND

8 Track

9 Margin Down *

10 Margin Up *

* Denotes negative logic:

Open = Normal operation

Ground = Function active

Description

The PTH05020 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 high-

performance step-down power conversion

for up to 22 A of output current from a

5-V input bus voltage. The output volt-

age of the PTH05020W can be set to

any value over the range, 0.8 V to 3.6 V,

using a single resistor.

This series includes Auto-Track™.

Auto-Track 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),

and margin up/down controls. To ensure

tight load regulation, an output voltage

sense is also provided. A non-latching

over-current trip and over-temperature

shutdown provides load fault protection.

Target applications include complex

multi-voltage, multi-processor systems

that incorporate the industry’s high-speed

DSPs, micro-processors and bus drivers.

NOMINAL SIZE = 1.5 in x 0.87 in

(38,1 mm x 22,1 mm)

Summary of content (19 pages)

PAGE 1
PTH05020W —5-V Input 22-A, 5-V Input Non-Isolated Wide-Output Adjust Power Module SLTS207C – MAY 2003 – REVISED DECEMBER 2003 Features NOMINAL SIZE = • Up to 22 A Output Current • 5-V Input Voltage • Wide-Output Voltage Adjust (0.8 V to 3.6 V) • Efficiencies up to 96 % • 155 W/in³ Power Density • On/Off Inhibit • Output Voltage Sense • Pre-Bias Startup • Margin Up/Down Controls • Under-Voltage Lockout 1.5 in x 0.
PAGE 2
PTH05020W —5-V Input 22-A, 5-V Input Non-Isolated Wide-Output Adjust Power Module SLTS207C – MAY 2003 – REVISED DECEMBER 2003 Ordering Information Output Voltage (PTH05020Hxx) Package Options (PTH05020xHH) (1) Code W Code AH AS Voltage 0.8 V – 3.6 V (Adjust) Description Horiz. T/H SMD, Standard (3) Pkg Ref. (EUK) (EUL) (2) Notes: (1) Add “T” to end of part number for tape and reel on SMD packages only.
PAGE 3
PTH05020W —5-V Input 22-A, 5-V Input Non-Isolated Wide-Output Adjust Power Module SLTS207C – MAY 2003 – REVISED DECEMBER 2003 Environmental & Absolute Maximum Ratings Characteristics Symbols Track Input Voltage Operating Temperature Range Solder Reflow Temperature Storage Temperature Mechanical Shock Vtrack Ta Treflow Ts Mechanical Vibration Weight Flammability — — (Voltages are with respect to GND) Conditions Over Vin Range Surface temperature of module body or pins — Per Mil-STD-883D, Method 2002
PAGE 4
PTH05020W—5-V Input Typical Characteristics 22-A, 5-V Input Non-Isolated Wide-Output Adjust Power Module SLTS207C – MAY 2003 – REVISED DECEMBER 2003 Characteristic Data; Vin =5 V Safe Operating Area; Vin =5 V (See Note A) Efficiency vs Load Current (See Note B) Over Output Voltage Range 100 90 Efficiency - % VOUT 3.3 V 2.5 V 1.8 V 1.5 V 1.
PAGE 5
Application Notes PTH03020W & PTH05020W Capacitor Recommendations for the PTH03020 & PTH05020 Series of Power Modules Input Capacitor The recommended input capacitor(s) is determined by the 1,000 µF (1) minimum capacitance and 700 mArms minimum ripple current rating. Ripple current and <100 mΩ equivalent series resistance (ESR) values are the major considerations, along with temperature, when designing with different types of capacitors.
PAGE 6
Application Notes continued PTH03020W & PTH05020W Table 2-1: Input/Output Capacitors Capacitor Vendor, Type Series (Style) Capacitor Characteristics Quantity Working Voltage Value(µF) Max. ESR at 100 kHz 105°C Maximum Ripple Current (Irms) Physical Size (mm) Input Bus Output Bus 10 V 10 V 25 V 10 V 560 1000 1000 1000 0.090 Ω 0.068 Ω 0060 Ω 0.080 Ω 755 mA 1050 mA 1100 mA 850 mA 10×12.5 10×16 12.5×13.5 10×10.2 2 1 1 1 1 1 1 1 6.3 V 6.3 V 10 V 10 V 470 1000 680 1000 0.020 Ω 0.013 Ω 0.
PAGE 7
Application Notes PTH03020W & PTH05020W Adjusting the Output Voltage of the PTH03020W & PTH05020W Wide-Output Adjust Power Modules The Vo Adjust control (pin 4) sets the output voltage of the PTH03020W and PTH05020W products. The adjustment range of the PT03020W (3.3-V input) is from 0.8 V to 2.5 V 1, and the PTH05020W (5-V input) from 0.8 V to 3.6 V. The adjustment method requires the addition of a single external resistor, Rset, that must be connected directly between the Vo Adjust and GND pins 2.
PAGE 8
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Point-of-Load Alliance The PTH family of non-isolated, wide-output adjust power modules from Texas Instruments are optimized for applications that require a flexible, high performance module that is small in size. These products are part of the “Point-of-Load Alliance” (POLA), which ensures compatible footprint, interoperability and true second sourcing for customer design flexibility.
PAGE 9
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) For protection against load faults, all modules incorporate output over-current protection. Applying a load that exceeds the regulator’s over-current threshold will cause the regulated output to shut down. Following shutdown a module will periodically attempt to recover by initiating a soft-start power-up.
PAGE 10
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Auto-Track™ Function The Auto-Track function is unique to the PTH family, and is available with the all “Point-of-Load Alliance” (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 11
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Figure 3–5; Sequenced Power Up & Power Down Using Auto-Track U1 10 9 8 5 Track PTH05020W VIN Inhibit Vo1 =3.3 V 6 GND + 3 C IN VO 1 + 2 +5 V 4 7 C OUT R2 698 C1 0.1 µF U2 R1 100 k 9 8 5 Track 2 + C IN 0V Figure 3–6; Simultaneous Power Up with Auto-Track Control HORIZ SCALE: 10 ms/Div 10 Q1 BSS138 PTH05010W VIN Inhibit 3 VO Vo2 =1.
PAGE 12
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Margin Up/Down Controls Notes: The PTHxx060W, PTHxx010W, PTHxx020W, and PTHxx030W 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 %. This provides a convenient method for dynamically testing the operation of the load circuit over its supply margin or range.
PAGE 13
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Pre-Bias Startup Capability Notes Only selected products in the PTH family incorporate this capability. Consult Table 3-1 to identify which products are compliant. 1. Startup includes the short delay (approx. 10 ms) prior to the output voltage rising, followed by the rise of the output voltage under the module’s internal soft-start control.
PAGE 14
Application Notes PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Remote Sense The PTHxx060W, PTHxx010W, PTHxx020W, and PTHxx030W products incorporate an output voltage sense pin, Vo Sense. The Vo Sense pin should be connected to Vout at the load circuit (see data sheet standard application). A remote sense improves the load regulation performance of the module by allowing it to compensate for any ‘IR’ voltage drop between itself and the load.
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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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.