TI PTR08060W

PTR08060W
www.ti.com
SLTS289 – AUGUST 2007
6-A, 4.5-V to 14-V INPUT, NON-ISOLATED,
ADJUSTABLE WIDE-OUTPUT, SWITCHING REGULATOR
FEATURES
APPLICATIONS
•
•
•
•
•
•
•
1
•
•
•
•
•
•
•
Up to 6-A Output Current
Wide Input Voltage Range (4.5 V to 14 V)
Wide-Output Voltage Adjust
(0.6 V to 5.5 V)
Efficiencies Up To 96%
ON/OFF Inhibit
Undervoltage Lockout (UVLO)
Output Overcurrent Protection
(Nonlatching, Auto-Reset)
Overtemperature Protection
Ambient Temp. Range: –40°C to 85°C
Space Saving Vertical SIP Package
Instrumentation
Consumer Electronics
Servers
General-Purpose Circuits
DESCRIPTION
The PTR08060W is a highly integrated, low-cost switching regulator module that delivers up to 6 A of output
current. Occupying approximate PCB area of a standard TO-220 linear regulator IC, the PTR08060W provides
output current at a much higher efficiency and with much less power dissipation, thereby eliminating the need for
a heat sink. Their small size (0.65 x 0.41 in), high efficiency, and low cost makes these modules attractive for a
variety of applications.
The input voltage range of the PTR08060W is from 4.5 V to 14 V, allowing operation from either a 5-V or 12-V
input bus. Using state-of-the-art switched-mode power-conversion technology, the PTR08060W can step down to
voltages as low as 0.6 V. The output voltage can be adjusted to any voltage over the range, 0.6 V to 5.5 V, using
a single external resistor. Operating features include an undervoltage lockout (UVLO), on/off inhibit and output
overcurrent protection. Target applications include servers, test and measurement applications, and high-end
consumer products.
VI
VO
VO
VI
PTR08060W
Inhibit
Inhibit
CI
100 mF
(Required)
GND
GND
VOAdjust
RSET
1%, 0.05 W
CO
100 mF
(Required)
L
O
A
D
GND
UDG-07115
1
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.
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.
Copyright © 2007, Texas Instruments Incorporated
PTR08060W
www.ti.com
SLTS289 – AUGUST 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.
ORDERING INFORMATION
For the most current package and ordering information, see the Package Option Addendum at the end of this datasheet, or see
the TI website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted (1)
UNIT
TA
Operating free-air
temperature
Over VI range
Twave
Wave solder temperature
Surface temperature of module body or pins
(5 seconds maximum)
Tstg
(1)
(2)
(3)
°C
-40 to 85
260
Storage temperature
°C
(2)
-55 to 125
°C
(3)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
This product is not compatible with surface-mount reflow solder processes.
The shipping tray or tape and reel cannot be used to bake parts at temperatures higher than 65C.
RECOMMENDED OPERATING CONDITIONS
MIN
MAX
VI
Input voltage
4.5
14
UNIT
V
TA
Operating free-air temperature
–40
85
°C
PACKAGE SPECIFICATIONS
PTR08060W
Weight
Flammability
Mechanical shock
Mechanical vibration
(1)
2
UNIT
2.74 grams
Meets UL 94 V-O
Per Mil-STD-883D, Method 2002.3, 1 msec, 1/2 sine, mounted
Mil-STD-883D, Method 2007.2, 20-2000 Hz
250 G
15 G
(1)
(1)
Qualification limit.
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ELECTRICAL CHARACTERISTICS
at 25C free-air temperature, VI = 12 V, VO = 3.3 V, IO = IO(Max), CI = 100 F, CO = 100 F (unless otherwise noted)
PARAMETER
IO
Output current
TEST CONDITIONS
MIN
TA = 85°C, 100LFM airflow
TYP
MAX
0
0.6 V ≤ VO ≤ 3.6
4.5
3.6 V < VO ≤ 5.5
VO /0.83 (2)
6
14
UNIT
A
(1)
VI
Input voltage range
Over IO range
VO(adj)
Output voltage adjust range
Over IO range
Set-point voltage tolerance
TA = 25°C
Temperature variation
-40°C ≤ TA ≤ +85°C
±0.2
% VO
Line regulation
Over VI range
±0.3
% VO
Load regulation
Over IO range
±0.5
Total output voltage variation
Includes set-point, line, load, –40°C ≤ TA ≤ +85°C
VO
0.6
Efficiency
ILIM
92 %
(2)
95 %
UVLO
TA = 25°C
VI = 5 V
IO = 5 A
20 MHz bandwith
Overcurrent threshold
Reset, followed by autorecovery
Undervoltage lockout
Inhibit control (pin 1)
RSET = 619 Ω, VO = 2.5 V
93 %
RSET = 976 Ω, VO = 1.8 V
91 %
RSET = 1.3 kΩ, VO = 1.5 V
90 %
RSET = 1.91 kΩ, VO = 1.2 V
88 %
RSET = 2.87 kΩ, VO = 1 V
86 %
RSET = 10.7 kΩ, VO = 0.7 V
84 %
2.5 A/μs load step from 50 to 100% IOmax
A
μs
VO
over/undershoot
150
mV
Input high voltage (VIH)
2.8
Input low voltage (VIL)
–0.3
Input low current (IIL)
Switching frequency
Over VI and IO ranges
CI
External input capacitance
100
(5)
100
(6)
Equivalent series resistance (non-ceramic)
5
(8)
Per Bellcore TR-332, 50% stress,
TA = 40°C, ground benign
13.7
Non-ceramic
CO
External output capacitance
MTBF
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Calculated reliability
mVPP
50
4.25
FS
% VO
10
3.8
Pin 1 to GND
V
% VO
Recovery time
VI = decreasing
Input standby current
(3)
50
VI = increasing
II(stby)
(3)
V
% VO
±3
RSET = 267 Ω, VI = 12 V, VO = 5 V (2)
Output voltage ripple
Transient response
5.5
±2
RSET = 432 Ω, VO = 3.3 V
η
14
Ceramic
4.4
3.95
6
V
(4)
0.6
V
–125
μA
1
mA
300
kHz
μF
3000
22
(6)
(7)
100
μF
mΩ
106 Hrs
For output voltages less than 1.0 V, the output ripple may increase (up to 2×) when operating at input voltages greater than (VO ×15).
The minimum input voltage is 4.5 V or (VO/0.83) V, whichever is greater.
The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a
tolerance of 1% with with 100 ppm/°C or better temperature stability.
This control pin has an internal pullup to the input voltage VI. If it is left open circuit, the module operates when input power is applied. A
small low-leakage (<100 nA) MOSFET is recommended for control. Do not tie the inhibit pin to VI or to another module's inhibit pin. See
the application section for further guidance.
An external 100-μF bulk capacitor is required across the input (VI and GND) for proper operation. Locate the capacitor close to the
module.
An external 100-μF non-ceramic capacitor is required across the output (VO and GND) for proper operation. Locate the capacitor close
to the module. Adding additional capacitance close to the load improves the response of the regulator to load transients.
This is the calculated maximum capacitance. The minimum ESR limitation often results in a lower value. See the capacitor application
information for further guidance.
This is the typical ESR for all the non-ceramic capacitance. Use 7 mΩ as the minimum when calculating the total equivalent series
resistance (ESR) using the max-ESR values specified by the capacitor manufacturer.
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PIN ASSIGNMENT
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
VI
2
GND
3
VO
4
I/O
I
DESCRIPTION
The positive input voltage power node to the module, which is referenced to common GND.
This is the common ground connection for the VI and VO power connections. It is also the 0 VDC
reference for the Inhibit and VO Adjust control inputs.
O
The regulated positive power output with respect to the GND node.
VOAdjust
5
I
A 1% resistor must be connected between this pin and GND (pin 3) to set the output voltage of the
module higher than 0.6 V. If left open-circuit, the output voltage defaults to this value. The temperature
stability of the resistor should be 100 ppm/°C (or better). The set-point range is from 0.6 V to 5.5 V. For
information on output voltage adjustment see the related application section.
TheVOAdjust pin must never be connected directly to GND. The minimum resistance between
VOAdjust and GND is limited to 240 Ω.
Inhibit
1
I
The Inhibit pin is an open-collector/drain-negative logic input that is referenced to GND. Applying a
low-level ground signal to this input disables the module's output. When the Inhibit control is active, the
input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the
module will produce an output voltage whenever a valid input source is applied.
TOP VIEW
1
2
3
4
5
4
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TYPICAL CHARACTERISTICS (12-V INPUT) (1) (2)
EFFICIENCY
vs
OUTPUT CURRENT
OUTPUT RIPPLE
vs
OUTPUT CURRENT
120
2.5
VO (V)
5.0
3.3
1.2
0.7
VO – Output Voltage Ripple – VPP(mV)
VO = 5.0
95
90
85
80
75
VO = 3.3
70
65
VO = 1.2
60
55
VO = 0.7
VO (V)
5.0
3.3
1.2
0.7
100
80
VO = 3.3
60
40
VO = 1.2
VO = 0.7
0
1
4
2
3
IO - Output Current - A
5
VO = 5.0
VO = 3.3
1.5
VO = 1.2
1.0
0.5
20
VO = 0.7
0
50
VO (V)
5.0
3.3
1.2
0.7
2.0
VO = 5.0
PD - Power Dissipation - W
100
h - Efficiency - %
POWER DISSIPATION
vs
OUTPUT CURRENT
0
0
6
1
4
2
3
IO - Output Current - A
5
6
0
4
2
3
IO - Output Current - A
1
5
Figure 1.
Figure 2.
Figure 3.
TEMPERATURE DERATING
vs
OUTPUT CURRENT
TEMPERATURE DERATING
vs
OUTPUT CURRENT
TEMPERATURE DERATING
vs
OUTPUT CURRENT
90
90
90
6
100 LFM
80
400 LFM
200 LFM
60
100 LFM
50
VO = 5.0 V
Airflow
400 LFM
40
Natural
Convection
80
70
Natural Convection
60
50
40
VO = 3.3 V
200 LFM
30
Airflow
100 LFM
30
100 LFM
1
4
2
3
IO - Output Current - A
5
6
Figure 4.
(2)
60
50
40
VO = 0.7 V
30
Airflow
Nat conv
20
20
20
0
70
Nat conv
Nat conv
(1)
TA - Ambient Temperature - °C
70
TA - Ambient Temperature - °C
TA - Ambient Temperature - °C
80
0
1
4
2
3
IO - Output Current - A
5
Figure 5.
6
0
1
4
2
3
IO - Output Current - A
5
6
Figure 6.
The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 1, Figure 2, and Figure 3.
The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum
operating temperatures. Derating limits apply to modules soldered directly to a 100 mm × 100 mm double-sided PCB with 1 oz. copper.
Applies to Figure 4.
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TYPICAL CHARACTERISTICS (5-V INPUT) (1) (2)
EFFICIENCY
vs
OUTPUT CURRENT
OUTPUT RIPPLE
vs
OUTPUT CURRENT
100
1.4
55
VO (V)
3.3
1.2
0.7
90
85
80
VO = 3.3
75
VO = 1.2
70
VO = 0.7
65
60
VO (V)
3.3
1.2
0.7
55
50
45
VO = 3.3
35
VO = 0.7
VO = 1.2
25
1
4
2
3
IO - Output Current - A
5
1.0
VO = 3.3
VO = 0.7
0.8
0.6
0.4
15
VO = 1.2
0.2
0
5
0
VO (V)
3.3
1.2
0.7
1.2
PD - Power Dissipation - W
VO – Output Voltage Ripple – VPP(mV)
95
h - Efficiency - %
POWER DISSIPATION
vs
OUTPUT CURRENT
6
0
4
2
3
IO - Output Current - A
1
Figure 7.
5
6
Figure 8.
0
1
4
2
3
IO - Output Current - A
5
6
Figure 9.
TEMPERATURE DERATING
vs
OUTPUT CURRENT
90
TA - Ambient Temperature - °C
80
70
60
50
40
All VO
30
Airflow
Nat conv
20
0
1
4
2
3
IO - Output Current - A
5
6
Figure 10.
(1)
(2)
6
The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 7, Figure 8, and Figure 9.
The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum
operating temperatures. Derating limits apply to modules soldered directly to a 100 mm × 100 mm double-sided PCB with 1 oz. copper.
Applies to Figure 10.
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APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
The VOAdjust control (pin 5) sets the output voltage of the PTR08060W product. The adjustment range is from
0.6 V to 5.5 V. The adjustment method requires the addition of a single external resistor, RSET, that must be
connected directly between the VOAdjust and GND pin 3. Table 1 gives the standard external resistor for a
number of common bus voltages, along with the actual voltage the resistance produces.
For other output voltages, the value of the required resistor can either be calculated using the following formula,
or simply selected from the range of values given in Table 2. Figure 11 shows the placement of the required
resistor.
RSET =
1.182
(kW )
VO - 0.591
Table 1. Standard Values of RSET for Common Output
Voltages
VI
VO (V)
(Required)
RSET (kΩ)
(Standard Value)
VO(V)
(Actual)
5 (1)
0.267
5.018
3.3
0.432
3.327
2.5
0.619
2.501
1.8
0.976
1.802
1.5
1.3
1.500
1.2
1.91
1.210
1
2.87
1.003
0.7
10.7
0.701
(1)
The minimum input voltage is 4.5 V or (VO/0.83) V, whichever is
greater.
2
VI
VO
VO
4
PTR08060W
1
Inhibit
CI
GND
VOAdjust
3
5
CO
RSET
1%, 0.05 W
GND
GND
UDG-07116
(1)
A 0.05-W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/°C (or
better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 5 and 3
using dedicated PCB traces.
(2)
The VOAdjust pin must never be connected directly to GND. The minimum resistance between VOAdjust and GND is
limited to 240 Ω.
(3)
Never connect capacitors from VOAdjust to either GND or VO. Any capacitance added to the VOAdjust pin will affect
the stability of the regulator.
Figure 11. VO Adjust Resistor Placement
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Table 2. Calculated RSET Resistor Values
VO Req'd
(V)
RSET (kΩ)
VO Req'd
(V)
RSET(kΩ)
VO Req'd
(V)
RSET(kΩ)
0.6
131
2.3
0.692
4.0
0.347
0.7
10.8
2.4
0.653
4.1
0.337
0.8
5.66
2.5
0.619
4.2
0.328
0.9
3.83
2.6
0.588
4.3
0.319
1.0
2.89
2.7
0.560
4.4
0.310
1.1
2.32
2.8
0.535
4.5
0.302
1.2
1.94
2.9
0.512
4.6
0.295
1.3
1.67
3.0
0.491
4.7
0.288
1.4
1.46
3.1
0.471
4.8
0.281
1.5
1.30
3.2
0.453
4.9
0.274
1.6
1.17
3.3
0.436
5.0
0.268
1.7
1.07
3.4
0.421
5.1
0.262
1.8
0.978
3.5
0.406
5.2
0.256
1.9
0.903
3.6
0.393
5.3
0.251
2.0
0.839
3.7
0.380
5.4
0.246
2.1
0.783
3.8
0.368
5.5
0.241
2.2
0.735
3.9
0.357
CAPACITOR RECOMMENDATIONS FOR THE PTR08060W POWER MODULE
Capacitor Technologies
Electrolytic Capacitors
When using electrolytic capacitors, high-quality, computer-grade electrolytic capacitors are recommended.
Aluminum electrolytic capacitors provide adequate decoupling over the frequency range of 2 kHz to 150 kHz,
and are suitable when ambient temperatures are above -20°C. For operation below -20°C, tantalum,
ceramic, or OS-CON type capacitors are required.
Ceramic Capacitors
The performance of aluminum electrolytic capacitors is less effective above 150 kHz. Multilayer ceramic
capacitors have a low ESR and a resonant frequency higher than the bandwidth of the regulator. They can
be used to reduce the reflected ripple current at the input as well as improve the transient response of the
output.
Tantalum, Polymer-Tantalum Capacitors
Tantalum type capacitors may only used on the output bus, and are recommended for applications where the
ambient operating temperature is less than 0°C. The AVX TPS series and Kemet capacitor series are
suggested over many other tantalum types due to their lower ESR, higher rated surge, power dissipation,
and ripple current capability. Tantalum capacitors that have no stated ESR or surge current rating are not
recommended for power applications.
8
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Input Capacitor (Required)
The PTR08060W requires a minimum input capacitance of 100μF. The ripple current rating of the electrolytic
capacitor must be at least 650mArms. An optional 22-μF X5R/X7R ceramic capacitor is recommended to reduce
the RMS ripple current. Table 3 includes a preferred list of capacitors by vendor.
Input Capacitor Information
The size and value of the input capacitor is determined by the converter’s transient performance capability. The
minimum value assumes that the converter is supplied with a responsive, low-inductance input source. The
source should have ample capacitive decoupling, and be distributed to the converter via PCB power and ground
planes.
Ceramic capacitors should be located as close as possible to the module's input pins, within 0.5 inch (1.3 cm).
Adding ceramic capacitance is necessary to reduce the high-frequency ripple voltage at the module's input. This
reduces the magnitude of the ripple current through the electroytic capacitor, as well as the amount of ripple
current reflected back to the input source. Additional ceramic capacitors can be added to further reduce the RMS
ripple current requirement for the electrolytic capacitor.
The main considerations when selecting input capacitors are the RMS ripple current rating, temperature stability,
and maintaining less than 100 mΩ of equivalent series resistance (ESR).
Regular tantalum capacitors are not recommended for the input bus. These capacitors require a recommended
minimum voltage rating of 2 × (maximum dc voltage + ac ripple). This is standard practice to ensure reliability. No
tantalum capacitors were found to have voltage ratings sufficient to meet this requirement.
When the operating temperature is below 0°C, the ESR of aluminum electrolytic capacitors increases. For these
applications, OS-CON, poly-aluminum, and polymer-tantalum types should be considered.
Output Capacitor (Required)
The PTR08060W requires a minimum 100μF of non-ceramic output capacitance. Additional non-ceramic,
low-ESR capacitance is recommended for improved performance. See data sheet for maximum capacitance
limits. The required capacitance above the minimum is determined by actual transient deviation requirements.
Table 3 includes a preferred list of capacitors by vendor.
Output Capacitor Information
When selecting output capacitors, the main considerations are capacitor type, temperature stability, and ESR.
Ceramic output capacitors added for high-frequency bypassing should be located as close as possible to the
load to be effective. Ceramic capacitor values below 10μF should not be included when calculating the total
output capacitance value.
When the operating temperature is below 0°C, the ESR of aluminum electrolytic capacitors increases. For these
applications, OS-CON, poly-aluminum, and polymer-tantalum types should be considered.
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
2.5A/μs. The typical voltage deviation for this load transient is given in the Electrical Characteristics table using
the minimum required value of output capacitance. As the di/dt of a transient is increased, the response of a
converter’s regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent
limitation with any dc/dc converter once the speed of the transient exceeds its bandwidth capability.
If the target application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with
additional low ESR ceramic capacitor decoupling. Generally, with load steps greater than 100A/μs, adding
multiple 10-μF ceramic capacitors plus 10×1μF, and numerous high frequency ceramics (≤0.1μF) is all that is
required to soften the transient higher frequency edges. The PCB location of these capacitors in relation to the
load is critical. DSP, FPGA and ASIC vendors identify types, location and amount of capacitance required for
optimum performance. Low impedance buses, unbroken PCB copper planes, and components located as close
as possible to the high frequency devices are essential for optimizing transient performance.
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Table 3. Recommended Input/Output Capacitors (1)
Capacitor Characteristics
Capacitor Vendor,
Type/Series (Style)
Working
Value
Voltage
(µF)
(V)
Quantity
Max ESR
at
100 kHz
(Ω)
Max Ripple
Current at
85°C (Irms)
(mA)
Physical Size
(mm)
Input
Bus
Output
Bus
Vendor Number
Panasonic, Aluminum
25
330
0.090
775
10 × 12,5
1
1
EEUFC1E331
FC (Radial)
35
180
0.090
775
10 × 12,5
1
1
EEUFC1V181
FK (SMD)
25
470
0.080
850
10 × 10,2
1
1
EEVFK1E471P
PXA-Poly-Aluminum (SMD)
16
150
0.026
3430
10 × 7,7
1
≤4
PXA16VC151MJ80TP
PS (Radial)
20
100
0.024
3300
8 × 11,5
1
≤4
20PS100MH11
LXZ, Aluminum (Radial)
35
220
0.090
760
10 × 12,5
1
1
LXZ35VB221M10X12LL
HD (Radial)
25
220
0.072
760
8 × 11,5
1
1
UHD1E221MPR
PM (Radial)
35
220
0.090
770
10 × 15
1
1
UPM1V221MHH6
Sanyo
SVP, Os-con (SMD)
20
100
0.024
3300
8 × 12
1
≤4
20SVP100M
SEQP, Os-con (Radial)
20
100
0.024
3300
8 × 12
1
≤4
20SEQP100M
TPE, Pos-Cap (SMD)
10
220
0.025
2400
7,3 × 5,7
N/R (2)
≤4
10TPE220ML
AVX, Tantalum
10
100
0.100
1090
7,3 × 4,3 × 4,1
N/R (2)
≤5
TPSD107M010R0100
TPS (SMD)
10
220
0.100
1414
7,3 × 4,3 × 4,1
N/R (2)
≤5
TPSV227M010R0100
25
68
0.095
1451
7,3 × 4,3 × 4,1
2
≤5
TPSV686M025R0080
T520, Poy-Tant (SMD)
10
100
0.080
1200
7,3 × 5,7 × 4
N/R (2)
≤5
T520D107M010AS
T495, Tantalum (SMD)
10
100
0.100
1100
7,3 × 5,7 × 4
N/R (2)
≤5
T495X107M010AS
Vishay-Sprague
10
150
0.090
1100
7,3 × 6 × 4,1
N/R (2)
≤5
594D157X0010C2T
594D, Tantalum (SMD)
25
68
0.095
1600
7,3 × 6 × 4,1
2
≤5
594D686X0025R2T
94SP, Organic (Radial)
16
100
0.070
2890
10 × 10,5
1
≤5
94SP107X0016FBP
94SVP, Organic (SMD)
20
100
0.025
3260
8 × 12
1
≤4
94SVP107X0020E12
Kemet, Ceramic X5R (SMD)
16
10
0.002
–
1210 case
1 (3)
≤5
C1210C106M4PAC
6.3
47
0.002
3225 mm
N/R (2)
≤5
C1210C476K9PAC
6.3
100
0.002
1210 case
N/R (2)
≤3
GRM32ER60J107M
6.3
47
3225 mm
N/R (2)
≤5
GRM32ER60J476M
16
22
1 (3)
≤5
GRM32ER61C226L
16
10
1 (3)
≤5
GRM32DR61C106K
1210 case
N/R
(2)
≤3
C3225X5ROJ107MT
3225 mm
N/R (2)
≤5
C3225X5ROJ476MT
United Chemi-Con
Nichicon Aluminum
Kemet
Murata, Ceramic X5R (SMD)
TDK, Ceramic X5R (SMD)
(1)
(2)
(3)
10
0.002
–
6.3
100
6.3
47
–
16
22
1 (3)
≤5
C3225X5R1C226MT
16
10
1 (3)
≤5
C3225X5R1C106MT
Capacitor Supplier Verification
Please verify availability of capacitors identified in this table. Capacitor suppliers may recommend alternative part numbers because of
limited availability or obsolete products. In some instances, the capacitor product life cycle may be in decline and have short-term
consideration for obsolescence.
RoHS, Lead-free and Material Details
Please consult capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process
requirements. Component designators or part number deviations can occur when material composition or soldering requirements are
updated.
N/R – Not recommended. The capacitor voltage rating does not meet the minimum operating limits.
Ceramic capacitors are required to complement electrolytic types at the input and to reduce high-frequency ripple current.
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): PTR08060W
PTR08060W
www.ti.com
SLTS289 – AUGUST 2007
Power-Up Characteristics
When configured per the standard application, the PTR08060W power module produces a regulated output
voltage following the application of a valid input source voltage. During power up, internal soft-start circuitry slows
the rate that the output voltage rises, thereby limiting the amount of in-rush current that can be drawn from the
input source. The soft-start circuitry introduces a short time delay (typically 10 ms) into the power-up
characteristic. This is from the point that a valid input source is recognized. Figure 12 shows the power-up
waveforms for a PTR08060W, operating from a 12-V input and with the output voltage adjusted to 3.3 V. The
waveforms were measured with a 4-A constant current load.
VI
(5 V/div)
VO
(2 V/div)
II
(2 A/div)
t − Time − 4 ms/div
Figure 12. Power-Up Waveforms
Overcurrent Protection
For protection against load faults, the PTR08060W incorporates output overcurrent protection. Applying a load
that exceeds the regulator's overcurrent threshold causes the regulated output to shut down. Following
shutdown, the module periodically attempts to recover by initiating a soft-start power-up. This is described as a
hiccup mode of operation, whereby the module continues in a cycle of successive shutdown and power up until
the load fault is removed. During this period, the average current flowing into the fault is significantly reduced.
Once the fault is removed, the module automatically recovers and returns to normal operation.
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): PTR08060W
11
PTR08060W
www.ti.com
SLTS289 – AUGUST 2007
Output On/Off Inhibit
For applications requiring output voltage on/off control, the PTR08060W power module incorporates an output
on/off Inhibit control (pin 1). The inhibit feature can be used wherever there is a requirement for the output
voltage from the regulator to be turned off.
The power module functions normally when the Inhibit pin is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to Vin with respect to GND.
Figure 13 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit control
has its own internal pullup to VI potential. An open-collector or open-drain device is recommended to control this
input.
Turning Q1 on applies a low voltage to the Inhibit control pin and disables the output of the module. If Q1 is then
turned off, the module will execute a soft-start power-up sequence. A regulated output voltage is produced within
20 msec. Figure 14 shows the typical rise in the output voltage, following the turn off of Q1. The turn off of Q1
corresponds to the fall in the waveform, Q1 Vgs. The waveforms were measured with a 4-A constant current
load.
VI
2
VI
PTR08060W
1
CI
Inhibit
GND
3
1=Inhibit
GND
UDG-07117
Figure 13. On/Off Inhibit Control Circuit
VINH
(1 V/div)
VO
(2 V/div)
II
(2 A/div)
t − Time − 4 ms/div
Figure 14. Power Up Response From Inhibit Control
12
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): PTR08060W
PACKAGE OPTION ADDENDUM
www.ti.com
28-Sep-2007
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
PTR08060WVD
ACTIVE
SIP MOD
ULE
EDP
Pins Package Eco Plan (2)
Qty
5
80
TBD
Lead/Ball Finish
Call TI
MSL Peak Temp (3)
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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