TI PTH12000L

PTH12000W/L — 12-V Input
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
Features
NOMINAL SIZE =
0.75 in x 0.5 in
(19,05 mm x 12,7 mm)
• Up to 6-A Output Current
• 12-V Input Voltage
• Wide-Output Voltage Adjust
(1.2 V to 5.5 V)/(0.8 V to 1.8 V)
• 230 W/in³ Power Density
• Efficiencies up to 92 %
• Pre-Bias Startup
• On/Off Inhibit
• Under-Voltage Lockout
• Output Over-Current Protection
(Non-Latching, Auto-Reset)
• Operating Temp: –40 to +85 °C
• Surface Mount Package
• Safety Agency Approvals:
UL/cUL 60950, EN60950
VDE
Description
Pin Configuration
The PTH12000 series of non-isolated
power modules are small in size and high
on performance. Using double-sided surface mount construction and synchronous
rectification technology, these regulators
deliver up to 6 A of output current while
occupying a PCB area of about half the
size of a standard postage stamp. They
are an ideal choice for applications where
space, performance and cost are important design constraints.
The series operates from an input voltage of 12 V to provide step-down power
conversion to a wide range of output voltages. W-suffix devices are adjustable from
1.2 V to 5.5 V, and L-suffix devices are
adjustable from 0.8 V to 1.8 V. The out-
put voltage is set within the adjustment
range using a single external resistor.
Operating features include an on/off
inhibit, output voltage adjust (trim), and
the ability to start up into an existing
output voltage or prebias. A non-latching
over-current trip provides protection
against load faults.
Target applications include telecom,
industrial, and general purpose circuits,
including low-power dual-voltage systems
that use a DSP, microprocessor, or ASIC.
Package options include both throughhole and surface mount configurations.
Pin
1
2
3
4
5
Function
GND
Vin
Inhibit *
Vo Adjust
Vout
* Denotes negative logic:
Open
= Output On
Ground = Output Off
Standard Application
Rset = Required to set the output voltage higher than
the lowest value (see spec. table for values).
C1 = Required 100 μF capacitor
C2 = Optional 100 μF capacitor
C3 = Optional 10 μF ceramic capacitor
1
2
Inhibit
PTH12000x
(Top View)
4
+
C IN
100 µF
(Required)
3
GND
For technical support and further information visit http://power.ti.com
V OUT
5
C OUT
100 µF
(Optional)
+
V IN
R SET, 1%
(Required)
GND
PTH12000W/L — 12-V Input
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
Ordering Information
Output Voltage (PTH12000rxx)
Package Options (PTH12000xrr) (1)
Code
W
L
Code
Voltage
1.2 V – 5.5 V
0.8 V – 1.8 V
(Adjust)
(Adjust)
AH
AS
Description
Horiz. T/H
SMD, Standard (3)
Pkg Ref.
(2)
(EUS)
(EUT)
Notes: (1) Add “T” to end of part number for tape and reel on SMD packages only.
(2) Reference the applicable package reference drawing for the dimensions and PC board layout
(3) “Standard” option specifies 63/37, Sn/Pb pin solder material.
Pin Descriptions
Vin: The positive input voltage power node to the module, which is referenced to common GND.
Vout: The regulated positive power output with respect
to the GND node.
GND: This is the common ground connection for the
‘Vin’ and ‘Vout’ power connections. It is also the 0 VDC
reference for the ‘Inhibit’ and ‘Vo Adjust’ control inputs.
Inhibit: The Inhibit pin is an open-collector/drain negative
logic input that is referenced to GND. Applying a lowlevel ground signal to this input disables the module’s
output and turns off the output voltage. When the Inhibit
control is active, the input current drawn by the regulator
is significantly reduced. If the Inhibit pin is left opencircuit, the module will produce an output whenever a
valid input source is applied.
Environmental & Absolute Maximum Ratings
Characteristics
Symbols
Operating Temperature Range
Solder Reflow Temperature(AS)
Solder Reflow Temperature(AZ)
Wave SolderTemperature(AH/AD)
Storage Temperature
Mechanical Shock
Ta
Treflow
Treflow
TWave
Ts
Mechanical Vibration
Weight
Flammability
—
—
Vo Adjust: A 1-% resistor must be connected between this
pin and GND (pin 1) to set the output voltage of the
module higher than its lowest value. The temperature
stability of the resistor should be 100 ppm/°C (or better).
The set-point range is 1.2 V to 5.5 V for W-suffix devices,
and 0.8 V to 1.8 V for L-suffix devices. The resistor value
required for a given output voltage may be calculated
using a formula. If left open circuit, the output voltage
will default to its lowest value. For further information
on output voltage adjustment consult the related application note.
The specification tables also give the preferred resistor
values for a number of standard output voltages.
(Voltages are with respect to GND)
Conditions
Over Vin Range
Surface temperature of module body or pins
Surface temperature of module body or pins
Surface temperature of module body or pins(5 seconds)
—
Per Mil-STD-883D, Method 2002.3
1 msec, ½ sine, mounted
Mil-STD-883D, Method 2007.2
20-2000 Hz
Min
Typ
Max
Units
–40 (i)
—
–55
—
+85
235 (ii)
260 (ii)
260 (ii)
+125
°C
°C
°C
°C
°C
—
500
—
G
—
15
—
G
—
2
—
grams
Meets UL 94V-O
Notes: (i) For operation below 0 °C the external capacitors must have stable characteristics. Use either a low ESR tantalum, Oscon, or ceramic capacitor.
(ii) During soldering of package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
For technical support and further information visit http://power.ti.com
PTH12000W — 12-V Input
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
Electrical Specifications
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
Unless otherwise stated, T a =25 °C, Vin =12 V, V o =3.3 V, C 1 =100 μF, C2 =0 μF, C 3 =0 μF, and Io =Iomax
PTH12000W
Characteristics
Symbols
Conditions
Output Current
Io
Over ΔVadj range
Input Voltage Range
Set-Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Variation
Vin
Vo tol
ΔRegtemp
ΔRegline
ΔRegload
ΔRegtot
Over Io range
Ouput Voltage Adjust Range
Efficiency
ΔVadj
η
Vo Ripple (pk-pk)
Vr
Transient Response
Over-Current Threshold
Under-Voltage Lockout
ttr
ΔVtr
Io trip
UVLO
Inhibit Control (pin 3)
Input High Voltage
Input Low Voltage
Input Low Current
VIH
VIL
IIL
Standby Input Current
Switching Frequency
External Input Capacitance
External Output Capacitance
Iin standby
ƒs
Cin
Cout
Reliability
MTBF
Ta =60 °C, 200 LFM
Ta =25 °C, natural convection
–40 °C <Ta < +85 °C
Over Vin range
Over Io range
Includes set-point, line, load,
–40 °C ≤ T a ≤ +85 °C
Over Vin range
Vin =12 V, Io =4 A
RSET = 280 Ω Vo = 5.0 V
RSET = 2.0 kΩ Vo = 3.3 V
RSET = 4.32 kΩ Vo = 2.5 V
RSET = 8.06 kΩ Vo = 2.0 V
RSET = 11.5 kΩ Vo = 1.8 V
RSET = 24.3 kΩ Vo = 1.5 V
RSET = open cct Vo = 1.2 V
20 MHz bandwidth, Io =4 A
Vo ≥ 3.3 V
C3 =10 μF ceramic
Vo ≤ 2.5 V
1 A/μs load step, 50 to 100 % Iomax,
Vo =1.8 V, C2 =100 μF
Recovery time
Vo over/undershoot
Reset followed by auto-recovery
Vin increasing
Vin decreasing
Referenced to GND
Pin 3 to GND
pins 1 & 3 connected
Over Vin and Io ranges
Capacitance value
non-ceramic
ceramic
Equiv. series resistance (non-ceramic)
Per Bellcore TR-332
50 % stress, Ta =40 °C, ground benign
Min
Typ
Max
Units
0
0
10.8
—
—
—
—
—
—
—
—
±0.5
±5
±5
6 (1)
6 (1)
13.2
±2 (2)
—
—
—
A
V
%Vo
%Vo
mV
mV
—
—
±3 (2)
%Vo
1.2
—
—
—
—
—
—
—
—
—
—
92
90
88
87
86
84
82
50 (3)
25 (3)
5.5
—
—
—
—
—
—
—
—
—
V
—
—
—
—
8.8
70
100
12
—
—
—
—
—
10.4
—
μSec
mV
A
Vin –0.5
–0.2
—
—
300
100 (5)
0
0
4 (8)
—
—
–240
1
350
—
100 (6)
—
—
Open (4)
0.5
—
—
400
—
3,300 (7)
300
—
V
μA
mA
kHz
μF
μF
9.4
—
—
106 Hrs
%
mVpp
V
mΩ
Notes: (1) See SOA curves or consult factory for appropriate derating.
(2) The set-point voltage tolerance is affected by the tolerance and stability ofR SET . The stated limit is unconditionally met if RSET has a tolerance of 1%
with 100 ppm/°C or better temperature stability.
(3) The pk-pk output ripple voltage is measured with an external 10 μF ceramic capacitor. See the standard application schematic.
(4) The Inhibit control (pin 3) has an internal pull-up to Vin, and if left open-circuit the module will operate when input power is applied. A small lowleakage (<100 nA) MOSFET is recommended to control this input. See application notes for more information.
(5) The regulator requires a minimum of 100 μF input capacitor with a minimum 750 mArms ripple current rating. For further information, consult the
related application note on Capacitor Recommendations.
(6) An external output capacitor is not required for basic operation. Adding 100 μF of distributed capacitance at the load will improve the transient response.
(7) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance.
(8) This is the typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values to calculate.
For technical support and further information visit http://power.ti.com
PTH12000W — 12-V Input
Typical Characteristics
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
PTH12000W Characteristic Data; Vin =12 V
(See Note A)
PTH12000W Safe Operating Area; Vin =12 V
(See Note B)
Output Voltage =5 V
Efficiency vs Output Current
100
90
Efficiency - %
90
80
VOUT
80
Ai r f l ow
5.0 V
70
3.3 V
2.5 V
60
400LFM
200LFM
100LFM
1.8 V
70
Nat c onv
50
1.2 V
40
60
30
50
0
1
2
3
4
5
6
20
0
Iout -(A)
1
2
3
4
5
6
Io ut (A)
Output Ripple vs Load Current (See Note 3 to Table)
Output Voltage =3.3 V
100
90
Ripple - mV
VOUT
5.0 V
3.3 V
2.5 V
1.8 V
1.2 V
60
40
20
Ambient Temperature (°C)
80
80
Airflow
70
400LFM
200LFM
100LFM
Nat conv
60
50
40
30
0
20
0
1
2
3
4
5
6
0
1
2
Iout (A)
4
5
6
Output Voltage ≤1.8 V
Power Dissipation vs Output Current
90
3.0
VOUT
2.0
5.0 V
3.3 V
1.5
2.5 V
1.0
1.8 V
1.2 V
0.5
Ambient Temperature (°C)
80
2.5
Pd - Watts
3
Iout (A)
70
Airflow
60
100LFM
Nat conv
50
40
30
0.0
20
0
1
2
3
Iout - Amps
4
5
6
0
1
2
3
4
5
6
Iout (A)
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B: SOA 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 4 in. × 4 in. double-sided PCB with 1 oz. copper.
For technical support and further information visit http://power.ti.com
PTH12000L — 12-V Input
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
Electrical Specifications
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
Unless otherwise stated, T a =25 °C, Vin =12 V, V o =1.8 V, C 1 =100 μF, C2 =0 μF, C 3 =0 μF, and Io =Iomax
PTH12000L
Characteristics
Symbols
Conditions
Output Current
Input Voltage Range
Set-Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Variation
Io
Vin
Vo tol
ΔRegtemp
ΔRegline
ΔRegload
ΔRegtot
Over ΔVadj range,
Over Io range
Ouput Voltage Adjust Range
Efficiency
ΔVadj
η
Vo Ripple (pk-pk)
Vr
Transient Response
Over-Current Threshold
Under-Voltage Lockout
ttr
ΔVtr
Io trip
UVLO
Inhibit Control (pin 3)
Input High Voltage
Input Low Voltage
Input Low Current
VIH
VIL
IIL
Standby Input Current
Switching Frequency
External Input Capacitance
External Output Capacitance
Iin standby
ƒs
Cin
Cout
Reliability
MTBF
Ta =85 °C, natural convection
–40 °C <Ta < +85 °C
Over Vin range
Over Io range
Includes set-point, line, load,
–40 °C ≤ T a ≤ +85 °C
Over Vin range
Vin =12 V, Io =4 A
RSET = 130 Ω Vo = 1.8 V
RSET = 3.57 kΩ Vo = 1.5 V
RSET = 12.1 kΩ Vo = 1.2 V
RSET = 32.4 kΩ Vo = 1.0 V
RSET = Open cctVo = 0.8 V
20 MHz bandwidth, Io =4 A
Vo > 1.2 V
C3 =10 μF ceramic
Vo ≤ 1.2 V
1 A/μs load step, 50 to 100 % Iomax,
Vo =1.8 V, C2 =100 μF
Recovery time
Vo over/undershoot
Reset followed by auto-recovery
Vin increasing
Vin decreasing
Referenced to GND
Pin 3 to GND
pins 1 & 3 connected
Over Vin and Io ranges
Capacitance value
non-ceramic
ceramic
Equiv. series resistance (non-ceramic)
Per Bellcore TR-332
50 % stress, Ta =40 °C, ground benign
Min
Typ
Max
Units
0
10.8
—
—
—
—
—
—
—
±0.5
±5
±5
6
13.2
±2 (1)
—
—
—
A
V
%Vo
%Vo
mV
mV
—
—
±3 (1)
%Vo
0.8
—
—
—
—
—
—
—
—
87
86
85
82
79
25 (2)
20 (2)
1.8
—
—
—
—
—
—
—
V
—
—
—
—
8.8
70
100
12
—
—
—
—
—
10.4
—
Vin –0.5
–0.2
—
—
200
100 (4)
0
0
4 (7)
—
—
–240
1
250
—
100 (5)
—
—
Open (3)
0.5
—
—
300
—
3,300 (6)
300
—
μA
mA
kHz
μF
μF
9.4
—
—
106 Hrs
%
mVpp
μSec
mV
A
V
V
mΩ
Notes: (1) The set-point voltage tolerance is affected by the tolerance and stability ofR SET . The stated limit is unconditionally met if RSET has a tolerance of 1%
with 100 ppm/°C or better temperature stability.
(2) The pk-pk output ripple voltage is measured with an external 10 μF ceramic capacitor. See the standard application schematic.
(3) The Inhibit control (pin 3) has an internal pull-up to Vin, and if left open-circuit the module will operate when input power is applied. A small lowleakage (<100 nA) MOSFET is recommended to control this input. See application notes for more information.
(4) The regulator requires a minimum of 100 μF input capacitor with a minimum 750 mArms ripple current rating. For further information, consult the
related application note on Capacitor Recommendations.
(5) An external output capacitor is not required for basic operation. Adding 100 μF of distributed capacitance at the load will improve the transient response.
(6) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance.
(7) This is the typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values to calculate.
For technical support and further information visit http://power.ti.com
PTH12000L — 12-V Input
Typical Characteristics
6-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
SLTS202E– MAY 2003 – REVISED NOVENBER 2007
PTH12000L Characteristic Data, Vin =12 V
(See Note A)
PTH12000L Safe Operating Area; Vin =12 V
(See Note B)
Output Voltage ≤1.8 V
Efficiency vs Output Current
100
90
Efficiency (%)
VOUT
1.8 V
1.5 V
1.2 V
1.0 V
0.8 V
80
70
60
Ambient Temperature (°C)
80
90
Airflow
70
400LFM
200LFM
100LFM
Nat conv
60
50
40
30
50
20
0
1
2
3
4
5
6
0
Output Current (A)
1
2
3
4
5
6
Output Current (A)
Output Ripple vs Load Current (See Note 3 to Table)
50
Ripple (mVpp)
40
VOUT
1.8 V
1.5 V
1.2 V
1.0 V
0.8 V
30
20
10
0
0
1
2
3
4
5
6
Output Current (A)
Power Dissipation vs Output Current
2
Power Dissipation (W)
1.6
VOUT
1.8 V
1.5 V
1.2 V
1.0 V
0.8 V
1.2
0.8
0.4
0
0
1
2
3
4
5
6
Output Current (A)
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
For technical support and further information visit http://power.ti.com
Application Notes
PTH12000 Series
Capacitor Recommendations for the PTH12000
Wide-Output Adjust Power Modules
Input Capacitor
The recommended input capacitance is determined by
the 100 μF minimum capacitance and 750 mArms minimum ripple current rating. A 10-μF X5R/X7R ceramic
capacitor may also be added to reduce the reflected input
ripple current [3]. The ceramic capacitor should be located
between the input electrolytic and the module.
Ripple current, less than 150 mΩ equivalent series resistance (ESR) and temperature are major considerations
when selecting input capacitors. Unlike polymer-tantalum
capacitors, regular tantalum capacitors have a recommended minimum voltage rating of 2 × (max. DC voltage
+ AC ripple). This is standard practice to ensure reliability.
No tantalum capacitors were found with sufficient voltage rating to meet this requirement. At temperatures
below 0 °C, the ESR of aluminum electrolytic capacitors
increases. For these applications Os-Con, polymer-tantalum, and polymer-aluminum types should be considered.
Output Capacitors (Optional)
For applications with load transients (sudden changes in
load current), regulator response will benefit from external
output capacitance. The value of 100 μF is used to define
the transient response specification (see data sheet). For
most applications, a high quality computer-grade aluminum electrolytic capacitor is adequate. These capacitors
provide decoupling over the frequency range, 2 kHz to
150 kHz, and are suitable for ambient temperatures above
0 °C. Below 0 °C, tantalum, ceramic or Os-Con type
capacitors are recommended. When using one or more
non-ceramic capacitors, the calculated equivalent ESR
should be no lower than 4 mΩ (7 mΩ using the manufacturer’s
maximum ESR for a single capacitor). A list of preferred
low-ESR type capacitors are identified in Table 1-1.
In addition to electrolytic capacitance, adding a 10-μF
X5R/X7R ceramic capacitor to the output will reduce
the output ripple voltage and improve the regulator’s
transient response. The measurement of both the output
ripple and transient response is also best achieved across
a 10-μF ceramic capacitor.
Ceramic Capacitors
Above 150 kHz the performance of aluminum electrolytic
capacitors is less effective. Multilayer ceramic capacitors
have very 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 [3] and improve
the transient response of the output. When used on the
output their combined ESR is not critical as long as the
total value of ceramic capacitance does not exceed 300 μF.
Also, to prevent the formation of local resonances, do not
place more than five identical ceramic capacitors in parallel with values of 10 μF or greater.
For technical support and further information visit http://power.ti.com
Tantalum Capacitors
Tantalum type capacitors are most suited for use on the
output bus, and are recommended for applications where
the ambient operating temperature can be less than 0 °C.
The AVX TPS, Sprague 593D/594/595 and Kemet T495/
T510 capacitor series are suggested over other tantalum
types due to their higher rated surge, power dissipation,
and ripple current capability. As a caution many general
purpose tantalum capacitors have considerably higher
ESR, reduced power dissipation and lower ripple current
capability. These capacitors are also less reliable as they
have lower power dissipation and surge current ratings.
Tantalum capacitors that do not have a stated ESR or
surge current rating are not recommended for power
applications.
When specifying Os-con and polymer tantalum capacitors
for the output, the minimum ESR limit will be encountered well before the maximum capacitance value is
reached.
Capacitor Table
Table 1-1 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.
This is not an extensive capacitor list. Capacitors from other
vendors are available with comparable specifications. Those
listed are for guidance. The RMS ripple current rating and
ESR (at 100 kHz) are critical parameters necessary to insure
both optimum regulator performance and long capacitor life.
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 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. 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 output capacitor decoupling. In these cases
special attention must be paid to the type, value and ESR
of the capacitors selected.
If the transient performance requirements exceed that
specified in the data sheet, the selection of output capacitors becomes more important.
Application Notes continued
PTH12000 Series
Table 1-1: Input/Output Capacitors
Capacitor Vendor/ Type
Series (Style)
Capacitor Characteristics
Quantity
Working
Voltage
Value (µF)
Max. ESR
@ 100 kHz
Max. Ripple
at 85 °C
Current (Irms)
Physical Size
(mm)
Input
Bus
Output
Bus
Panasonic, Aluminum
FC (Radial)
FK (SMD)
25 V
35 V
25 V
330 μF
180 μF
470 μF
0.090 Ω
0.090 Ω
0.080 Ω
755 mA
755 mA
850 mA
10×12.5
10×12.5
10×10.2
1
1
1
1
1
1
United Chemi-con
PXA, Poly-Aluminum (SMD)
FP, Os-con (Radial)
FS, Os-con (Radial)
LXZ, Aluminum (Radial)
16 V
20 V
20 V
35 V
150 μF
120 μF
100 μF
220 μF
0.026 Ω
0.024 Ω
0.030 Ω
0.090 Ω
3430 mA
3100 mA
2740 mA
760 mA
10×7.7
8×10.5
8×10.5
10×12.5
1
1
1
1
≤4
≤4
≤4
1
Nichicon Aluminum
HD, (Radial)
PM, (Radial)
25 V
35 V
220 μF
220 μF
0.072 Ω
0.090 Ω
760 mA
770 mA
8×11.5
10×15
1
1
1
1
Panasonic, Poly-Aluminum:
WA (SMD)
S/SE (SMD)
16 V
6.3 V
100 μF
180 μF
0.039 Ω
0.005 Ω
2500 mA
4000 mA
8×6.9
7.3×4.3×4.2
1
N/R [2]
Sanyo
SVP, Os-con (SMD)
SP, Os-con (Radial)
TPE, Pos-Ccap (SMD)
20 V
20 V
10 V
100 μF
120 μF
220 μF
0.024 Ω
0.024 Ω
0.025 Ω
>3300 mA
>3100 mA
>2400 mA
8×12
8×10.5
7.3×5.7
1
1
1
≤4
≤4
≤4
20SVP100M
20SP120M
10TPE220ML
10 V
10 V
25 V
100 μF
220 μF
68 μF
0.100 Ω
0.100 Ω
0.095 Ω
>1090 mA
>1414 mA
>1451 mA
7.3L
×4.3W
×4.1H
N/R [2]
N/R [2]
2
≤5
≤5
≤5
TPSD107M010R0100
TPSV227M010R0100
TPSV686M025R0095
10 V
10 V
100 μF
100 μF
0.080 Ω
0.100 Ω
1200 mA
>1100 mA
7.3L×5.7W
×4.0H
N/R [2]
N/R [2]
≤5
≤5
T520D107M010AS
T495X107M010AS
10 V
25 V
16 V
150 μF
68 μF
100 μF
0.090 Ω
0.095 Ω
0.070 Ω
1100 mA
1600 mA
2890 mA
7.3L×6.0W
×4.1H
10×10.5
N/R [2]
2
1
≤5
≤5
≤5
594D157X0010C2T
594D686X0025R2T
94SP107X0016FBP
Kemet, Ceramic X5R (SMD)
16 V
6.3 V
10 μF
47 μF
0.002 Ω
0.002 Ω
—
1 [3]
N/R [2]
C1210C106M4PAC
≤5
≤5 [1] C1210C476K9PAC (Vo ≤5.1V)
Murata, Ceramic X5R (SMD)
6.3 V
6.3 V
16 V
16 V
100 μF
47 μF
22 μF
10 μF
0.002 Ω
—
1210 case
3225 mm
N/R [2]
N/R [2]
1 [3]
1 [3]
≤3 [1]
≤5 [1]
≤5
≤5
GRM32ER60J107M (Vo ≤5.1V)
GRM32ER60J476M (Vo ≤5.1V)
GRM32ER61C226K
GRM32DR61C106K
TDK, Ceramic X5R (SMD)
6.3 V
6.3 V
16 V
16 V
100 μF
47 μF
22 μF
10 μF
0.002 Ω
—
1210 case
3225 mm
N/R [2]
N/R [2]
1 [3]
1 [3]
≤3 [1]
≤5 [1]
≤5
≤5
C3225X5R0J107MT (Vo ≤5.1V)
C3225X5R0J476MT (Vo ≤5.1V)
C3225X5R1C226MT
C3225X5R1C106MT
AVX, Tantalum TPS (SMD)
Kemet
T520, Poy-Tant (SMD)
T495, Tantalum (SMD)
Vishay-Sprague
594D, Tantalum (SMD)
94SP, Organic (Radial)
Vendor Number
1210 case
3225 mm
EEUFC1E331
EEUFC1V181
EEVFK1E471P
PXA16VC151MJ80TP
20FP120MG
20FS100M
LXZ35VB221M10X12LL
UHD1E221MPR
UPM1V221MHH6
EEFWA1C101P
≤5
≤1 [1] EEFSE0J181R (Vo ≤5.1V)
[1] The voltage rating of this capacitor only allows it to be used for output voltages that are equal to or less than 5.1 V
[2] N/R –Not recommended. The capacitor voltage rating does not meet the minimum derated operating limits.
[3] A ceramic capacitor may be used to complement electrolytic types at the input to further reduce high-frequency ripple current.
For technical support and further information visit http://power.ti.com
Application Notes
PTH12000 Series
Adjusting the Output Voltage of the PTH12000x
Wide-Output Adjust Power Modules
The Vo Adjust control (pin 4) sets the output voltage of
the PTH12000 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, R set,
that must be connected directly between the Vo Adjust
and GND pins 1. Table 2-1 gives the preferred value of the
external resistor for a number of standard voltages, along
with the actual output voltage that this resistance value
provides. Figure 2-1 shows the placement of the required
resistor.
Figure 2-1; Vo Adjust Resistor Placement
Table 2-1; Preferred Values of Rset for Standard Output Voltages
Inhibit
5.009 V
3.294 V
2.503 V
2.010 V
1.801 V
1.506 V
1.200 V
N/A
N/A
N/A
N/A
Rset
N/A
N/A
N/A
N/A
130 Ω
3.57 kΩ
12.1 kΩ
18.7 kΩ
32.4 kΩ
71.5 kΩ
Open
Vout (Actual)
N/A
N/A
N/A
N/A
1.800 V
1.499 V
1.201 V
1.101 V
0.999 V
0.901 V
0.800 V
For other output voltages the value of the required resistor
can either be calculated, or simply selected from the range
of values given in Table 2-3. The following formula may
be used for calculating the adjust resistor value. Select
the appropriate value for the parameters, Rs and Vmin,
from Table 2.2.
Rset
= 10 kΩ ·
0.8 V
Vout – Vmin
– Rs
Table 2.2; Adjust Formula Parameters
Pt. No.
V min
Vmax
Rs
VIN
PTH12000x
Inhibit
CIN
100µF
(Required)
3
VO
5
VOUT
GND
1
RSET, 1 %
COUT
100µF
(Optional)
PTH12000L
Vout (Actual)
280 Ω
2.0 kΩ
4.32 kΩ
8.06 kΩ
11.5 kΩ
24.3 kΩ
Open
N/A
N/A
N/A
N/A
2
+
5V
3.3 V
2.5 V
2V
1.8 V
1.5 V
1.2 V
1.1 V
1.0 V
0.9 V
0.8 V
Rset
VIN
+
PTH12000W
Vout (Req’d)
4
VO Adj
PTH12000W
PTH12000L
1.2 V
5.5 V
1.82 kΩ
0.8 V
1.8 V
7.87 kΩ
For technical support and further information visit http://power.ti.com
kΩ
GND
GND
Notes:
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 4
and 1 using dedicated PCB traces.
2. Never connect capacitors from Vo Adjust to either GND or
Vout. Any capacitance added to the Vo Adjust pin will affect
the stability of the regulator.
Application Notes continued
PTH12000 Series
Table 2-3; Output Voltage Set-Point Resistor Values
PTH12000W
VOUT
1.200
1.225
1.250
1.275
1.300
1.325
1.350
1.375
1.400
1.425
1.450
1.475
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
RSET
Open
318.0 kΩ
158.0 kΩ
105.0 kΩ
78.2 kΩ
62.2 kΩ
51.5 kΩ
43.9 kΩ
38.2 kΩ
33.7 kΩ
30.2 kΩ
27.3 kΩ
24.8 kΩ
21.0 kΩ
18.2 kΩ
16.0 kΩ
14.2 kΩ
12.7 kΩ
11.5 kΩ
10.5 kΩ
9.61 kΩ
8.85 kΩ
8.18 kΩ
7.59 kΩ
7.07 kΩ
6.60 kΩ
6.18 kΩ
5.80 kΩ
5.45 kΩ
5.14 kΩ
4.85 kΩ
4.58 kΩ
4.33 kΩ
4.11 kΩ
3.89 kΩ
3.70 kΩ
VOUT
2.70
2.75
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.50
3.60
3.70
3.80
3.90
4.00
4.10
4.20
4.30
4.40
4.50
4.60
4.70
4.80
4.90
5.00
5.10
5.20
5.30
5.40
5.50
PTH12000L
RSET
3.51 kΩ
3.34 kΩ
3.18 kΩ
3.03 kΩ
2.89 kΩ
2.75 kΩ
2.62 kΩ
2.50 kΩ
2.39 kΩ
2.28 kΩ
2.18 kΩ
2.08 kΩ
1.99 kΩ
1.90 kΩ
1.82 kΩ
1.66 kΩ
1.51 kΩ
1.38 kΩ
1.26 kΩ
1.14 kΩ
1.04 kΩ
939 Ω
847 Ω
761 Ω
680 Ω
604 Ω
533 Ω
466 Ω
402 Ω
342 Ω
285 Ω
231 Ω
180 Ω
131 Ω
85 Ω
41 Ω
VOUT
0.800
0.825
0.850
0.875
0.900
0.925
0.950
0.975
1.000
1.025
1.050
1.075
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
1.300
1.325
1.350
1.375
1.400
1.425
1.450
1.475
1.50
1.55
1.60
1.65
1.70
1.75
1.80
RSET
Open
312.0 kΩ
152.0 kΩ
98.8 kΩ
72.1 kΩ
56.1 kΩ
45.5 kΩ
37.8 kΩ
32.1 kΩ
27.7 kΩ
24.1 kΩ
21.2 kΩ
18.8 kΩ
16.7 kΩ
15.0 kΩ
13.5 kΩ
12.1 kΩ
11.0 kΩ
9.91 kΩ
8.97 kΩ
8.13 kΩ
7.37 kΩ
6.68 kΩ
6.04 kΩ
5.46 kΩ
4.93 kΩ
4.44 kΩ
3.98 kΩ
3.56 kΩ
2.8 kΩ
2.13 kΩ
1.54 kΩ
1.02 kΩ
551 Ω
130 Ω
For technical support and further information visit http://power.ti.com
Application Notes
PTH12000 Series
Power-Up Characteristics
When configured per the standard application, the
PTH12000x power modules produce a regulated output voltage whenever of a valid input voltage is applied
from Vin (pin 2), with respect to GND (pin 1). During
the power-up period, internal soft-start circuitry slows the
rate that the output voltage rises. This reduces the in-rush
current drawn from the input source. The soft-start circuitry also introduces a short time delay (typically 12 ms)
into the power-up characteristic. The delay is from the
point that a valid input source is recognized, to the initial
rise of the output voltage. Figure 3-1 shows the powerup characteristic of the PTH12000W with the output
voltage set to 5-V. The waveforms were measured with a
2-A resistive load. The initial rise in input current when
the input voltage first starts to rise is the charge current
drawn by the input capacitors.
Figure 3-1
The power modules function 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 3-2 shows the typical application of the inhibit
function. Note the discrete transistor (Q1). The Inhibit
pin has its own internal pull-up to V in 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
and disables the output of the module. If Q1 is then turned
off, the module will execute a soft-start power-up. A
regulated output voltage is produced within 25 msec.
Figure 3-3 shows the typical rise in both the output voltage and input current, following the turn-off of Q1. The
turn off of Q1 corresponds to the rise in the waveform,
Vinh. The waveforms were measured with a 5-V output
and 2-A resistive load.
Figure 3-2
Vin (5 V/Div)
VIN
2
PTH12000W
3
+
Iin (2 A/Div)
1
4
RSET
280
1%
C IN
100 µF
VOUT
5
+
Vo (5 V/Div)
Co1
100 µF
Q1
BSS138
1 =Inhibit
HORIZ SCALE: 5 ms/Div
GND
Over-Current Protection
For protectection against load faults, this series incorporates output over-current protection. Applying a load that
exceeds the module’s over-current threshold will cause
the regulated output to shut down. Following shut down
the module will periodically attempt to recover by initiating a soft-start power-up. This is often described as a
“hiccup” mode of operation, whereby the module continues in the cycle of successive shut down 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.
GND
Figure 3-3
Vo (2 V/Div)
Iin (1 A/Div)
Vinh (10 V/Div)
Output On/Off Inhibit
The inhibit control (pin 3) is used wherever there is a
requirement to turn off the regulator output while input
power is applied.
For technical support and further information visit http://power.ti.com
HORIZ SCALE: 5 ms/Div
L
O
A
D
Application Notes
PTH12000 Series
Pre-Bias Startup Capability
The capability to start up into an output pre-bias condition is now a feature of the PTH12000 series of modules.
(Note: This is a feature enhancement for the the W-suffix
version; see note 1).
the Inhibit pin is held low, and whenver the output is
allowed to rise under soft-start control. Power up under
soft-start control occurs upon the removal of the ground
signal to the Inhibit pin (with input voltage applied), or
when input power is applied. To further ensure that the
regulator doesn’t sink output current, (even with a ground
signal applied to its Inhibit), the input voltage must always
be greater than the applied pre-bias source. This condition must exist throughout the power-up sequence 3.
A pre-bias startup 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. Another path might be via
clamp diodes, sometimes used as part of a dual-supply
power-up sequencing arrangement. A prebias can cause
problems with power modules that incorporate synchronous rectifiers. This is because under most operating
conditions, such modules can sink as well as source output
current. The PTH12000x series of modules incorporate
synchronous rectifiers, but will not sink current during
startup, or whenever the Inhibit pin is held low. Startup
includes an initial delay (approx. 8 - 15 ms), followed by
the rise of the output voltage under the control of the
module’s internal soft-start mechanism; see Figure 3-1.
The soft-start period is complete when the output begins
rising above the pre-bias voltage. Once it is complete the
module functions as normal, and will sink current if a
voltage higher than the nominal regulation value is applied
to its output.
Note: If a pre-bias condition is not present, the soft-start period
will be complete when the output voltage has risen to either
the set-point voltage.
Demonstration Circuit
The circuit shown in Figure 3-4 is a demonstrates the
pre-bias startup feature. Figure 3-5 shows the startup
waveforms. The initial rise in Vo 2 is the pre-bias voltage, which is passed from the VCCIO to the VCORE
voltage rail through the ASIC. Note that the output current from the PTH12000L module (Io2) is negligible
until its output voltage rises above the applied pre-bias.
Conditions for Pre-Bias Holdoff
In order for the module to allow an output pre-bias voltage
to exist (and not sink current), certain conditions must be
maintained. The module holds off a pre-bias voltage when
Figure 3–4; Application Circuit Demonstrating Pre-Bias Startup
10
9
VIN = 12 V
2
5
8
Up Dn
Track
Sense
PTH12020W
VIN
Inhibit
Adjust
GND
3
7
1
VO
2
R3
11k0
PTH12000L
VIN
VO
5
Vo2 = 1.8 V
+
8
Inh
VCC
7
2
1
3
3
SENSE
RESET
5
TL7702B
REF
RESET
6
CT
C5
0.1 µF
C6
0.68 µF
4
GND
Adj
1
Io2
4
R2
130
RESIN
330 µF
VCCIO
VCORE
+ C3
+ C4
330 µF
GND
R4
100k
330 µF
R1
2k
330 µF
Vo1 = 3.3 V
+C
2
4
+ C1
6
ASIC
R5
10k0
For technical support and further information visit http://power.ti.com
Application Notes
PTH12000 Series
Figure 3–5; Pre-Bias Startup Waveforms
Vo 1 (1 V/Div)
Vo 2 (1 V/Div)
Hold-off
Period
Io 2 (2 A/Div)
HORIZ SCALE: 5 ms/Div
Notes
1. Output pre-bias holdoff has now been incorporated into
the W-suffix modules (PTH12000W), with a production
lot date code of “0423” or later.
2. To further ensure that the regulator’s output does not sink
current when power is first applied (even with a ground
signal applied to the Inhibit control pin), the input voltage
must always be greater than the applied pre-bias source.
This condition must exist throughout the power-up
sequence of the power system.
For technical support and further information visit http://power.ti.com
PTH12000 Tape & Reel and Tray Specification
PACKAGE OPTION ADDENDUM
www.ti.com
13-Nov-2010
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package
Drawing
Pins
Package Qty
Eco Plan
(2)
Lead/
Ball Finish
PTH12000LAH
ACTIVE
ThroughHole Module
EUS
5
56
Pb-Free (RoHS)
SN
PTH12000LAS
ACTIVE
Surface
Mount Module
EUT
5
49
TBD
PTH12000LAST
ACTIVE
Surface
Mount Module
EUT
5
250
PTH12000LAZ
ACTIVE
Surface
Mount Module
EUT
5
PTH12000LAZT
ACTIVE
Surface
Mount Module
EUT
PTH12000WAD
ACTIVE
ThroughHole Module
PTH12000WAH
ACTIVE
PTH12000WAS
MSL Peak Temp
(3)
Samples
(Requires Login)
N / A for Pkg Type
Request Free Samples
SNPB
Level-1-235C-UNLIM/
Level-3-260C-168HRS
Request Free Samples
TBD
SNPB
Level-1-235C-UNLIM/
Level-3-260C-168HRS
Purchase Samples
49
Pb-Free (RoHS)
SNAGCU
Level-3-260C-168 HR
Request Free Samples
5
250
Pb-Free (RoHS)
SNAGCU
Level-3-260C-168 HR
Purchase Samples
EUS
5
56
Pb-Free (RoHS)
SN
N / A for Pkg Type
Purchase Samples
ThroughHole Module
EUS
5
56
Pb-Free (RoHS)
SN
N / A for Pkg Type
Request Free Samples
ACTIVE
Surface
Mount Module
EUT
5
49
TBD
SNPB
Level-1-235C-UNLIM/
Level-3-260C-168HRS
Request Free Samples
PTH12000WAST
ACTIVE
Surface
Mount Module
EUT
5
250
TBD
SNPB
Level-1-235C-UNLIM/
Level-3-260C-168HRS
Purchase Samples
PTH12000WAZ
ACTIVE
Surface
Mount Module
EUT
5
49
Pb-Free (RoHS)
SNAGCU
Level-3-260C-168 HR
Request Free Samples
PTH12000WAZT
ACTIVE
Surface
Mount Module
EUT
5
250
Pb-Free (RoHS)
SNAGCU
Level-3-260C-168 HR
Purchase Samples
(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.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
13-Nov-2010
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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In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
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Power Mgmt
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Video and Imaging
www.ti.com/video
Wireless
www.ti.com/wireless-apps
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