LINEAGEPOWER APTS050A0X

Data Sheet
March 30, 2011
GigaTLynxTM Non-isolated Power Modules:
4.5Vdc – 14Vdc input; 0.7Vdc to 2Vdc, 50A Output
Features
Applications

Distributed power architectures

Intermediate bus voltage applications

Industrial applications

Telecommunications equipment
Vin+
VIN
PGOOD
CI2
CI1

Compliant to RoHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)

Input voltage from 4.5Vdc to 14Vdc

Output voltage programmable from 0.7 Vdc to
2.0Vdc via external resistor

Output current up to 50A

Tunable control loop for fast transient response

True differential remote sense

Negative remote On/Off logic

Output voltage sequencing (EZ-SEQUENCE

Output over current protection (non-latching)

Over temperature protection

Monotonic startup under pre-bias conditions

Parallel operation with active current sharing

Small size and low profile:
TM
)
33 mm x 22.9 mm x 10 mm (max.)
(1.3 in x 0.9 in x 0.393 in (max.))
RTUNE
MODULE
+
CO1
CO2
CTUNE
ON/OFF
Compliant to RoHS EU Directive 2002/95/EC
(-Z versions)
Vout+
VOUT
SENSE+
SEQ
+


Wide operating temperature range (-40°C to 85°C)

UL* 60950-1, 2 Ed. Recognized, CSA C22.2 No.
‡
nd
60950-1-07 Certified, and VDE (EN60950-1, 2
Ed.) Licensed

ISO** 9001 and ISO 14001 certified manufacturing
facilities
TRIM+
RTrim
TRIMGND SENSESENSE-
nd
†
Description
The GigaTLynxTM series of power modules are non-isolated dc-dc converters that can deliver up to 50A of output
current. These modules operate over a wide range of input voltage (VIN = 4.5Vdc-14Vdc) and provide a precisely
regulated output voltage from 0.7Vdc to 2.0Vdc, programmable via an external resistor. Features include remote
On/Off, adjustable output voltage, over current and over temperature protection, output voltage sequencing and
TM
paralleling. A new feature, the Tunable Loop , allows the user to optimize the dynamic response of the converter
to match the load with reduced amount of output capacitance leading to savings on cost and PWB area.
* UL is a registered trademark of Underwriters Laboratories, Inc.
†
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
‡
Document No: DS010-005 ver. 1.1
PDF name: APTS050A0X.pdf
Data Sheet
March 30, 2011
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Device
Symbol
Min
Max
Unit
All
VIN
-0.3
14
Vdc
Sequencing pin voltage
All
VsEQ
-0.3
4
Vdc
Operating Ambient Temperature
All
TA
-40
85
°C
All
Tstg
-55
125
°C
Input Voltage
Continuous
(see Thermal Considerations section)
Storage Temperature
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Device
Symbol
Min
Typ
Max
Unit
4.5
⎯
14
Vdc
Operating Input Voltage
Vo,set ≤ 2.0
VIN
Maximum Input Current
All
IIN,max
Adc
(VIN= VIN, min to VIN, max, IO=IO, max )
Inrush Transient
26
2
2
All
I t
Input No Load Current
VO,set = 0.7Vdc
IIN,No load
73.4
mA
(VIN = VIN, nom, Io = 0, module enabled)
VO,set = 1.8Vdc
IIN,No load
136
mA
All
IIN,stand-by
1.3
mA
Input Stand-by Current
1
A s
(VIN = VIN, nom, module disabled)
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN, min to
VIN, max, IO= IOmax ; See Test configuration section)
All
Input Ripple Rejection (120Hz)
All
73
50
mAp-p
dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an
integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included;
however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies
require a surface mount, fast acting fuse (ie. Littelfuse 456030 series) with a maximum rating of 30 A (see Safety
Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc
input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for
further information.
LINEAGE POWER
2
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point
(VIN=VIN,nom, IO=IO, nom, Tref=25°C)
All
VO, set
-1.0
⎯
+1.0
% VO, set
Output Voltage
All
VO, set
-2.0
⎯
+2.0
% VO, set
All
VO
0.7
2.0
Vdc
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range
Selected by an external resistor
Output Regulation
Line (VIN=VIN, min to VIN, max)
All
⎯
5
mV
Load (IO=IO, min to IO, max)
All
⎯
8
mV
Temperature (Tref=TA, min to TA, max)
All
⎯
8
mV
0.5
Vdc
50
mVpk-pk
Remote Sense Range
All
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
Cout = 1μF ceramic//10μF ceramic capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
⎯
All
1
TM
Without the Tunable Loop
ESR ≥ 1 mΩ
All
CO, max
⎯
⎯
1200
μF
ESR ≥ 10 mΩ
All
CO, max
⎯
⎯
10000
μF
ESR ≥ 1 mΩ
All
CO, max
⎯
⎯
20000
μF
ESR ≥ 10 mΩ
⎯
20000
μF
50A
Adc
With the Tunable Loop
All
CO, max
⎯
Output Current
All
Io
0
Output Current Limit Inception (Hiccup Mode )
All
IO, lim
⎯
180
⎯
% Io
Output Short-Circuit Current
All
IO, s/c
⎯
5.5
⎯
Adc
VO, set = 0.7Vdc
η
81.1
%
VIN= 12V, TA=25°C
VO,set = 1.2Vdc
η
87.0
%
IO=IO, max , VO= VO,set
VO,set = 1.8Vdc
η
90.1
%
Switching Frequency
All
fsw
(VO≤250mV) ( Hiccup Mode )
Efficiency
⎯
⎯
260
kHz
General Specifications
Parameter
Min
Telcordia Issue 2, Method I, Case 3, Calculated MTBF (IO=IO, max,
TA=40°C)
⎯
Weight
Typ
Max
Unit
4,755,661
Hours
14.22 (0.5)
g (oz.)
__________________________________
TM
External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as
TM
getting the best transient response. See the Tunable Loop section for details.
LINEAGE POWER
3
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Device
Symbol
Min
Typ
Max
Unit
Input High Current
All
IIH
0.5
⎯
3.3
mA
Input High Voltage
All
VIH
3.0
⎯
VIN, max
V
On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to GND)
Logic High (On/Off pin open – Module OFF)
Logic Low (Module ON)
Input Low Current
All
IIL
⎯
⎯
200
µA
Input Low Voltage
All
VIL
-0.3
⎯
0.6
V
Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (delay from
instant at which VIN =VIN, min until Vo=10% of Vo,set)
All
Tdelay
―
4.8
―
msec
Case 2: Input power is applied for at least one second
and then the On/Off input is set to logic Low (delay from
instant at which Von/Off=0.3V until Vo=10% of Vo, set)
All
Tdelay
―
4.8
―
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
All
Trise
―
3.6
―
msec
―
3.0
% VO, set
125
⎯
°C
—
2
V/msec
Turn-On Delay and Rise Times
o
(IO=IO, max , VIN = VIN, nom, TA = 25 C, )
Output voltage overshoot – Startup
o
IO= IO, max; VIN = 4.5 to 14Vdc, TA = 25 C
Over Temperature Protection
⎯
All
Tref
All
dVSEQ/dt
to application of voltage on SEQ pin)
All
TsEQ-delay
Tracking Accuracy
All
VSEQ –Vo
100
200
mV
VSEQ –Vo
200
400
mV
(See Thermal Consideration section)
Sequencing Slew rate capability
(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)
Sequencing Delay time (Delay from VIN, min
Power-up (2V/ms)
Power-down (1V/ms)
10
msec
(VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
All
All
All
Forced Load Share Accuracy
All
Number of units in Parallel
All
⎯
4.26
4.04
0.22
V
V
Vdc
10
% Io
5
PGOOD (Power Good)
Internal pull-up, VPGOOD
Overvoltage threshold for PGOOD
Undervoltage threshold for PGOOD
LINEAGE POWER
All
All
All
5
112.5
87.5
V
%VO, set
%VO, set
4
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Characteristic Curves
95
55
90
50
OUTPUT CURRENT, Io (A)
EFFICIENCY, η (%)
The following figures provide typical characteristics for the 12V Giga TLynx
85
Vin=12V
80
Vin=4.5V
Vin=14V
75
70
0
10
20
30
40
1m/s
(200LFM)
30
2m/s
(400LFM)
25
45
55
65
75
85
VO (V) (10mV/div)
OUTPUT VOLTAGE
TIME, t (0.2ms /div)
Figure 4. Transient Response to Dynamic Load
INPUT VOLTAGE
VIN (V) (5V/div)
VO (V) (200mV/div)
Change from 50% to 100% at 12Vin, Cext =5x47uF+
+22x330uFpolymer,CTune=330nF,RTune=100ohms
OUTPUT VOLTAGE
VON/OFF (V) (5V/div)
VO (V) (200mV/div)
1.5m/s
(300LFM)
35
IO (A) (20Adiv)
OUTPUT CURRENT
VO (V) (10mV/div)
OUTPUT VOLTAGE
ON/OFF VOLTAGE
OUTPUT VOLTAGE
LINEAGE POWER
0.5m/s
(100LFM)
Figure 2. Derating Output Current versus Ambient
Temperature and Airflow.
TIME, t (1μs/div)
Figure 5. Typical Start-up Using On/Off Voltage (Io =
Io,max).
40
AMBIENT TEMPERATURE, TA C
Figure 1. Converter Efficiency versus Output Current.
TIME, t (2ms/div)
NC
O
OUTPUT CURRENT, IO (A)
Figure 3. Typical output ripple and noise (VIN = 12V, Io =
Io,max).
o
50A at 0.7Vo and at 25 C.
45
35
50
TM
TIME, t (2ms/div)
Figure 6. Typical Start-up Using Input Voltage (VIN =
12V, Io = Io,max).
5
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Characteristic Curves
95
55
90
50
OUTPUT CURRENT, Io (A)
EFFICIENCY, η (%)
The following figures provide typical characteristics for the 12V Giga TLynx
Vin=12V
85
Vin=14V
80
Vin=4.5V
75
70
0
10
20
30
40
30
1.5m/s
(300LFM)
2m/s
(400LFM)
25
45
55
65
75
85
VO (V) (10mV/div)
OUTPUT VOLTAGE
TIME, t (0.1ms /div)
Figure 10. Transient Response to Dynamic Load
INPUT VOLTAGE
VIN (V) (5V/div)
VO (V) (500mV/div)
Change from 50% to 100% at 12Vin, Cext =5x47uF+
+13x330uFpolymer,CTune=120nF,RTune=180ohms
OUTPUT VOLTAGE
VON/OFF (V) (5V/div)
1m/s
(200LFM)
IO (A) (20Adiv)
OUTPUT CURRENT,
VO (V) (10mV/div)
OUTPUT VOLTAGE
ON/OFF VOLTAGE
OUTPUT VOLTAGE
VO (V) (500mV/div)
35
Figure 8. Derating Output Current versus Ambient
Temperature and Airflow.
TIME, t (1μs/div)
LINEAGE POWER
0.5m/s
(100LFM)
AMBIENT TEMPERATURE, TA C
Figure 7. Converter Efficiency versus Output Current.
Figure 11. Typical Start-up Using On/Off Voltage (Io =
Io,max).
NC
40
O
OUTPUT CURRENT, IO (A)
TIME, t (2 ms/div)
o
50A at 1.2 Vo and at 25 C.
45
35
50
Figure 9. Typical output ripple and noise (VIN = 12V, Io =
Io,max).
TM
TIME, t (2 ms/div)
Figure 12. Typical Start-up Using Input Voltage (VIN =
12V, Io = Io,max).
6
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Characteristic Curves
The following figures provide typical characteristics for the 12V Giga TLynx
100
OUTPUT CURRENT, Io (A)
EFFICIENCY, η (%)
50
90
85
Vin=14V
Vin=4.5V
80
75
70
0
10
20
30
40
LINEAGE POWER
0.5m/s
(100LFM)
1m/s
(200LFM)
30
1.5m/s
(300LFM)
2m/s
(400LFM)
25
45
55
65
75
85
VO (V) (20mV/div)
IO (A) (20Adiv)
OUTPUT VOLTAGE
Figure 17. Typical Start-up Using On/Off Voltage (Io =
Io,max).
35
Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.
TIME, t (0.1ms /div)
Figure 16. Transient Response to Dynamic Load
INPUT VOLTAGE
VIN (V) (5V/div)
VO (V) (500mV/div)
Change from 50% to 100% at 12Vin, Cext =5x47uF+
+8x330uFpolymer,CTune=47nF,RTune=220ohms
OUTPUT VOLTAGE
ON/OFF VOLTAGE
VON/OFF (V) (5V/div)
TIME, t (2 ms/div)
NC
O
TIME, t (1μs/div)
Figure 15. Typical output ripple and noise (VIN = 12V, Io =
Io,max).
40
AMBIENT TEMPERATURE, TA C
OUTPUT CURRENT,
VO (V) (10mV/div)
OUTPUT VOLTAGE
Figure 13. Converter Efficiency versus Output Current.
45
35
50
OUTPUT CURRENT, IO (A)
VO(V) (500mV/div)
o
50A at 1.8 Vo and at 25 C.
55
Vin=12V
95
OUTPUT VOLTAGE
TM
TIME, t (2 ms/div)
Figure 18. Typical Start-up Using Input Voltage (VIN =
12V, Io = Io,max).
7
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Test Configurations
Design Considerations
CURRENT PROBE
VIN(+)
BATTERY
CIN
CS 1000μF
Electrolytic
2x100μF
Tantalum
E.S.R.<0.1Ω
@ 20°C 100kHz
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
Figure 19. Input Reflected Ripple Current Test Setup.
COPPER STRIP
RESISTIVE
LOAD
Vo+
10uF
0.1uF
COM
SCOPE USING
BNC SOCKET
GROUND PLANE
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 20. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact
Rcontact
VIN(+)
Rdistribution
RLOAD
Rcontact
Rcontact
Rdistribution
COM
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 21. Output Voltage and Efficiency Test Setup.
VO. IO
Efficiency
η =
VIN. IIN
To minimize input voltage ripple, ceramic capacitors
are recommended at the input of the module. Figure 22
shows the input ripple voltage for various output
voltages at maximum load current with 2x22 µF or
4x22 µF or 4x47 µF ceramic capacitors and an input of
12V.
250
2x22uF
225
4x22uF
200
4x47uF
175
150
125
100
75
50
1
1.25
1.5
1.75
2
Output Voltage (Vdc)
Figure 22. Input ripple voltage for various output
voltages with 2x22 µF, 4x22 µF or 4x47 µF ceramic
capacitors at the input (maximum load). Input voltage
is 12V
Output Filtering
TM
VO
COM
Rdistribution
VO
VIN
TM
The Giga TLynx module should be connected to a
low ac-impedance source. A highly inductive source
can affect the stability of the module. An input
capacitance must be placed directly adjacent to the
input pin of the module, to minimize input ripple voltage
and ensure module stability.
LTEST
1μH
Input Filtering
Input Ripple Voltage (mVp-p)
TO OSCILLOSCOPE
x
100 %
The Giga TLynx modules are designed for low output
ripple voltage and will meet the maximum output ripple
specification with 0.1 µF ceramic and 10 µF ceramic
capacitors at the output of the module. However,
additional output filtering may be required by the system
designer for a number of reasons. First, there may be a
need to further reduce the output ripple and noise of the
module. Second, the dynamic response characteristics
may need to be customized to a particular load step
change.
To reduce the output ripple and improve the dynamic
response to a step load change, additional capacitance at
the output can be used. Low ESR polymer and ceramic
capacitors are recommended to improve the dynamic
response of the module. Figure 23 provides output ripple
information for different external capacitance values at
various Vo and for full load currents. For stable operation
of the module, limit the capacitance to less than the
maximum output capacitance as specified in the electrical
specification table. Optimal performance of the module
can be achieved by using the Tunable Loop feature described
later in this data sheet.
LINEAGE POWER
8
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
modules, the output start-up can be synchronized (please
refer to characterization curves).
Feature Descriptions
80
2x10uF Ext Cap
Ripple (mVp-p)
70
2x47uF Ext Cap
Overcurrent Protection
4x47uF Ext Cap
60
8x47uF Ext Cap
To provide protection in a fault (output overload)
condition, the unit should be equipped with internal
current-limiting circuitry and can endure current limiting
continuously. At the point of current-limit inception, the
unit enters hiccup mode. The unit should operate
normally once the output current is brought back into its
specified range.
50
40
30
20
10
0
VIN+
1
1.2
1.4
1.6
1.8
MODULE
2
Output Voltage(Volts)
R1
Figure 23. Output ripple voltage for various output
voltages with external 2x10 µF, 2x47 µF, 4x47 µF or
8x47 µF ceramic capacitors at the output (50A load).
Input voltage is 12V.
PWM Enable
I ON/OFF
ON/OFF
+
VON/OFF
Q1
Safety Considerations
For safety agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards,
i.e., UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN
EN 60950-1:2006 + A11 (VDE0805 Teil 1 + A11):200911; EN 60950-1:2006 + A11:2009-03.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power module
has extra-low voltage (ELV) outputs when all inputs are
ELV. The input to these units is to be provided with a
surface mount, fast acting fuse (ie. Littelfuse 456030
series) with a maximum rating of 30A in the positive input
lead.
Remote On/Off
The GigaTLynxTM SMT power modules feature a On/Off
pin for remote On/Off operation. If not using the On/Off
pin, connect the pin to ground (the module will be ON).
The On/Off signal (Von/off) is referenced to ground. The
circuit configuration for remote On/Off operation of the
module using the On/Off pin is shown in Figure 24.
During a Logic High on the On/Off pin (transistor Q1 is
OFF), the module remains OFF. The external resistor R1
should be chosen to maintain 3.0V minimum on the
On/Off pin to ensure that the module is OFF when
transistor Q1 is in the OFF state. Suitable values for R1
are 4.7K for input voltage of 12V and 3K for 5Vin. During
Logic-Low when Q1 is turned ON, the module is turned
ON.
The On/Off pin can also be used to synchronize the
output voltage start-up and shutdown of multiple modules
in parallel. By connecting On/Off pins of multiple
5.11K
5.11K
GND
_
Figure 24. Remote On/Off Implementation
using ON/OFF .
Overtemperature Protection
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
o
shutdown if the overtemperature threshold of 125 C is
exceeded at the thermal reference point Tref . The thermal
shutdown is not intended as a guarantee that the unit will
survive temperatures beyond its rating. Once the unit
goes into thermal shutdown it will then wait to cool before
attempting to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, module operation will be disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Output Voltage Programming
TM
The output voltage of the GigaTLynx can be
programmable to any voltage from 0.7 Vdc to 2.0Vdc by
connecting a single resistor (shown as Rtrim in Figure 25)
between the TRIM+ and TRIM pins of the module. The
following equation will be used to set the output voltage of
the module:
 14000 
Rtrim = 
Ω
Vo − 0.7 
LINEAGE POWER
9
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
By using a ±0.5% tolerance trim resistor with a TC of
±100ppm, a set point tolerance of ±1.5% can be achieved
as specified in the electrical specification. Table 1
provides Rtrim values required for some common output
voltages. The POL Programming Tool, available at
www.lineagepower.com under the Design Tools section,
helps determine the required external trim resistor
needed for a specific output voltage.
Table 1
VO, set (V)
0.7
1.0
1.2
1.5
1.8
Rtrim (KΩ)
Open
46.6
28
17.5
12.7
TM
The Giga TLynx modules have monotonic start-up and
shutdown behavior for any combination of rated input
voltage, output current and operating temperature range.
Startup into Pre-biased Output
TM
The Giga TLynx modules can start into a prebiased
output as long as the prebias voltage is 0.5V less than
the set output voltage. Note that prebias operation is not
supported when output voltage sequencing is used.
Vo
Rmargin-down
MODULE
Q2
TRIM+
V IN(+)
V O(+)
ON/OFF
TRIM+
Vout
Rmargin-up
Rtrim
Q1
LOAD
TRIM–
R trim
TRIM−
GND
Figure 25. Circuit configuration to program output
voltage using an external resistor.
Remote Sense
TM
The GigaTLynx SMT power modules have differential
Remote Sense to minimize the effects of distribution
losses by regulating the voltage at the Remote Sense pin.
The voltage between the SENSE pin and VOUT pin must
not exceed 0.5V. Note that the output voltage of the
module cannot exceed the specified maximum value.
This includes the voltage drop between the SENSE and
Vout pins. When the Remote Sense feature is not being
used, connect the SENSE pin to the VOUT pin.
Voltage Margining
Output voltage margining can be implemented in the Giga
TM
TLynx modules by connecting a resistor, Rmargin-up, from
the Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, Rmargin-down, from the
Trim pin to output pin for margining-down. Figure 26
shows the circuit configuration for output voltage
margining. The POL Programming Tool, available at
www.lineagepower.com under the Design Tools section,
also calculates the values of Rmargin-up and Rmargin-down for a
specific output voltage and % margin. Please consult
your local Lineage Power technical representative for
additional details.
Monotonic Start-up and Shutdown
LINEAGE POWER
Figure 26. Circuit Configuration for margining Output
voltage.
Output Voltage Sequencing
TM
The Giga TLynx modules include a sequencing feature,
TM
EZ-SEQUENCE that enables users to implement
various types of output voltage sequencing in their
applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature,
leave it unconnected.
When an analog voltage is applied to the SEQ pin, the
output voltage tracks this voltage until the output reaches
the set-point voltage. The final value of the SEQ voltage
must be set higher than the set-point voltage of the
module. The output voltage follows the voltage on the
SEQ pin on a one-to-one basis. By connecting multiple
modules together, multiple modules can track their output
voltages to the voltage applied on the SEQ pin.
For proper voltage sequencing, first, input voltage is
applied to the module. The On/Off pin of the module is
left unconnected or tied to GND so that the module is ON
by default. After applying input voltage to the module, a
minimum 10msec delay is required before applying
voltage on the SEQ pin. Alternatively, input voltage can
be applied while the unit is OFF and then the unit can be
enabled. In this case the SEQ signal must be applied
10ms after the unit is enabled. This delay gives the
module enough time to complete its internal power-up
soft-start cycle. During the delay time, the SEQ pin may
be held to ground.
After the 10msec delay, an analog voltage is applied to
the SEQ pin and the output voltage of the module will
track this voltage on a one-to-one volt bases until the
10
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
output reaches the set-point voltage. To initiate
simultaneous shutdown of the modules, the SEQ pin
voltage is lowered in a controlled manner. The output
voltage of the modules tracks the voltages below their
set-point voltages on a one-to-one basis. A valid input
voltage must be maintained until the tracking and output
voltages reach ground potential.
TM
When using the EZ-SEQUENCE feature to control
start-up of the module, pre-bias immunity during start-up
is disabled. The pre-bias immunity feature of the module
relies on the module being in the diode-mode during
start-up. When using the EZ-SEQUENCETM feature,
modules goes through an internal set-up time of 10msec,
and will be in synchronous rectification mode when the
voltage at the SEQ pin is applied. This will result in the
module sinking current if a pre-bias voltage is present at
the output of the module. When pre-bias immunity during
TM
start-up is required, the EZ-SEQUENCE feature must
be disabled. For additional guidelines on using the EZSEQUENCETM feature please contact the Lineage Power
technical representative for additional information.
TM
For additional power requirements, the Giga TLynx
power module is also available with a parallel option. Up
to five modules can be configured, in parallel, with active
load sharing.
Good layout techniques should be observed when using
multiple units in parallel. To implement forced load
sharing, the following connections should be made:
•
The share pins of all units in parallel must be
connected together. The path of these connections
should be as direct as possible.
•
All remote-sense pins should be connected to the
power bus at the same point, i.e., connect all the
SENSE(+) pins to the (+) side of the bus. Close
proximity and directness are necessary for good
noise immunity
Some special considerations apply for design of
converters in parallel operation:
•
•
The share bus is not designed for redundant
operation and the system will be non-functional upon
failure of one of the unit when multiple units are in
parallel. In particular, if one of the converters shuts
down during operation, the other converters may
also shut down due to their outputs hitting current
limit. In such a situation, unless a coordinated restart
is ensured, the system may never properly restart
since different converters will try to restart at different
times causing an overload condition and subsequent
shutdown. This situation can be avoided by having
an external output voltage monitor circuit that detects
a shutdown condition and forces all converters to
shut down and restart together.
When not using the active load share feature, share pins
should be left unconnected.
Power Good
Active Load Sharing (-P Option)
•
condition. To ensure that all modules come up
simultaneously, the on/off pins of all paralleled
converters should be tied together and the
converters enabled and disabled using the on/off pin.
When sizing the number of modules required for
parallel operation, take note of the fact that current
sharing has some tolerance. In addition, under
transient conditions such as a dynamic load change
and during startup, all converter output currents will
not be equal. To allow for such variation and avoid
the likelihood of a converter shutting off due to a
current overload, the total capacity of the paralleled
system should be no more than 75% of the sum of
the individual converters. As an example, for a
TM
system of four Giga TLynx converters in parallel,
the total current drawn should be less that 75% of (4
x 50A) , i.e. less than 150A.
All modules should be turned on and off together.
This is so that all modules come up at the same time
avoiding the problem of one converter sourcing
current into the other leading to an overcurrent trip
The Giga TLynxTM modules provide a Power Good
(PGOOD) signal to indicate that the output voltage is
within the regulation limits of the power module. The
PGOOD signal will be de-asserted to a low state if any
condition such as overtemperature, overcurrent or loss of
regulation occurs that would result in the output voltage
going ±12.5% outside the setpoint value. The PGOOD
terminal is internally pulled-up and provides a voltage of
~5V, when asserted, thus eliminating the need for an
external source and pull-up resistor.
Tunable Loop
TM
The Giga TLynx modules have a new feature that
optimizes transient response of the module called
TM
Tunable Loop .
External capacitors are usually added to the output of the
module for two reasons: to reduce output ripple and
noise (see Fig. 23) and to reduce output voltage
deviations from the steady-state value in the presence of
dynamic load current changes. Adding external
capacitance however affects the voltage control loop of
the module, typically causing the loop to slow down with
sluggish response. Larger values of external capacitance
could also cause the module to become unstable.
The Tunable LoopTM allows the user to externally adjust
the voltage control loop to match the filter network
connected to the output of the module. The Tunable
TM
Loop is implemented by connecting a series R-C
between the SENSE and TRIM+ pins of the module, as
shown in Fig. 28. This R-C allows the user to externally
adjust the voltage loop feedback compensation of the
module.
LINEAGE POWER
11
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Table 3. Recommended values of RTUNE and CTUNE to
obtain transient deviation of ≤2% of Vout for a 25A
step load with Vin=12V.
VOUT
SENSE+
RTUNE
MODULE
CTUNE
VO
CO1
CO
TRIM+
RTrim
TRIM-
1.8V
5x47uF +
8x330uF
polymer
1.2V
5x47uF +
13x330uF
polymer
0.7V
5x47uF +
22x330uF
polymer
RTUNE
220
180
100
CTUNE
ΔV
47nF
35mV
120nF
23mV
330nF
14mV
GND SENSE-
Figure. 28. Circuit diagram showing connection of
RTUME and CTUNE to tune the control loop of the
module.
Recommended values of RTUNE and CTUNE for different
output capacitor combinations are given in Tables 2 and
3. Table 2 shows the recommended values of RTUNE and
CTUNE for different values of ceramic output capacitors up
to 2000uF that might be needed for an application to
meet output ripple and noise requirements. Selecting
RTUNE and CTUNE according to Table 2 will ensure stable
operation of the module.
In applications with tight output voltage limits in the
presence of dynamic current loading, additional output
capacitance will be required. Table 3 lists recommended
values of RTUNE and CTUNE in order to meet 2% output
voltage deviation limits for some common output voltages
in the presence of a 25A to 50A step change (50% of full
load), with an input voltage of 12V.
Please contact your Lineage Power technical
representative to obtain more details of this feature as
well as for guidelines on how to select the right value of
external R-C to tune the module for best transient
performance and stable operation for other output
capacitance values or input voltages other than 12V.
Table 2. General recommended values of of RTUNE and
CTUNE for Vin=12V and various external ceramic
capacitor combinations.
CO
RTUNE
CTUNE
1 x 47uF 2x47uF
330
330
330pF
560pF
LINEAGE POWER
4x47uF
6x47uF
330
330
1200pF
1800pF
10 x 47uF 20 x 47uF
270
270
2200pF
5600pF
12
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should always
be provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of the
module will result in an increase in reliability. The thermal
data presented here is based on physical measurements
taken in a wind tunnel. The test set-up is shown in Figure
29. Note that the airflow is parallel to the short axis of the
module as shown in Figure 30. The derating data applies
to airflow in either direction of the module’s short axis.
The thermal reference points, Tref used in the
specifications is shown in Figure 30. For reliable
operation the temperatures at this point should not
o
exceed 125 C. The output power of the module should
not exceed the rated power of the module (Vo,set x
Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of
thermal aspects including maximum device temperatures.
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
Figure 30. Preferred airflow direction and location of
hot-spot of the module (Tref).
76.2_
(3.0)
x
12.7_
(0.50)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Figure 29. Thermal Test Setup.
LINEAGE POWER
13
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Example Application Circuit
Requirements:
Vin:
12V
Vout:
1.8V
Iout:
37.5A max., worst case load transient is from 25A to 37.5A
ΔVout:
Vin, ripple
1.5% of Vout (27mV) for worst case load transient
1.5% of Vin (180mV, p-p)
Vout+
Vin+
VIN
PGOOD
VOUT
SENSE+
RTUNE
SEQ
+
CI1
CI2
MODULE
+
CTUNE
ON/OFF
CO1
CO2
TRIM+
RTrim
TRIM-
GND SENSESENSE-
CI1
4x22μF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20)
CI2
200μF/16V bulk electrolytic
CO1
5 x 47μF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)
CO2
CTune
RTune
8 x 330μF/6.3V Polymer (e.g. Sanyo Poscap)
47nF ceramic capacitor (can be 1206, 0805 or 0603 size)
220 ohms SMT resistor (can be 1206, 0805 or 0603 size)
RTrim
12.7kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
LINEAGE POWER
14
Data Sheet
March 30, 2011
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Mechanical Outline of Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FUNCTION
VIN
GND
VOUT
VOUT
GND
VIN
SEQ
PGOOD
ON/OFF
VSVS+
+TRIM
–TRIM
SHARE
LINEAGE POWER
15
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Mechanical Outline
Dimensions are in inches and (millimeters).
Tolerances: x.xx in. ± 0.02 in. (x.x mm ± 0.5 mm) [unless otherwise indicated]
x.xxx in ± 0.010 in. (x.xx mm ± 0.25 mm)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LINEAGE POWER
FUNCTION
VIN
GND
VOUT
VOUT
GND
VIN
SEQ
PGOOD
ON/OFF
VSVS+
+TRIM
–TRIM
SHARE
16
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Packaging Details
The Giga TLynxTM SMT modules are supplied in tape & reel as standard. Modules are shipped in quantities of 140
modules per reel.
All Dimensions are in millimeters and (in inches).
Reel Dimensions
Outside diameter:
Inside diameter:
Tape Width:
LINEAGE POWER
330.2 (13.0)
177.8 (7.0)
56.0 (2.20)
17
Data Sheet
March 30, 2011
Surface Mount Information
Pick and Place
The Giga TLynxTM SMT modules use an open frame
construction and are designed for a fully automated
assembly process. The modules are fitted with a
label designed to provide a large surface area for pick
and place operations. The label meets all the
requirements for surface mount processing, as well as
safety standards, and is able to withstand reflow
o
temperatures of up to 300 C. The label also carries
product information such as product code, serial
number and location of manufacture.
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
contact Lineage Power for special manufacturing
process instructions.
Lead-free (Pb-free) Soldering
The –Z version Giga TLynx modules are lead-free
(Pb-free) and RoHS compliant and are both
forward and backward compatible in a Pb-free and
a SnPb soldering process. Failure to observe the
instructions below may result in the failure of or
cause damage to the modules and can
adversely affect long-term reliability.
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for
Nonhermetic Solid State Surface Mount Devices)
for both Pb-free solder profiles and MSL
classification procedures. This standard provides
a recommended forced-air-convection reflow
profile based on the volume and thickness of the
package (table 4-2). The suggested Pb-free solder
paste is Sn/Ag/Cu (SAC).
Recommended linear reflow profile using Sn/Ag/Cu
solder:
300
Per J-STD-020 Rev. C
Peak Temp 260°C
Figure 31. Pick and Place Location.
Nozzle Recommendations
The module weight has been kept to a minimum by
using open frame construction. Even so, these
modules have a relatively large mass when compared
to conventional SMT components. Variables such as
nozzle size, tip style, vacuum pressure and pick &
placement speed should be considered to optimize
this process. The minimum recommended inside
nozzle diameter for reliable operation is 3mm. The
maximum nozzle outer diameter, which will safely fit
within the allowable component spacing, is 5 mm
max.
Bottom Side Assembly
This module is not recommended for assembly
on the bottom side of a customer board. If such
an assembly is attempted, components may fall
off the module during the second reflow process.
If assembly on the bottom side is planned, please
LINEAGE POWER
Reflow Temp (°C)
250
Cooling Zone
4°C/Second
200
* Min. Time Above 235°C
15 Seconds
150
100
Heating Zone
1°C/Second
*Time Above 217°C
60 Seconds
50
0
Reflow Time (Seconds)
NOTE: Soldering outside of the recommended
profile requires testing to verify results and
performance.
Tin Lead Soldering
The Giga TLynxTM SMT power modules are lead free
modules and can be soldered either in a lead-free
solder process or in a conventional Tin/Lead (Sn/Pb)
process. It is recommended that the customer review
data sheets in order to customize the solder reflow
profile for each application board assembly. The
following instructions must be observed when
soldering these units. Failure to observe these
instructions may result in the failure of or cause
18
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
o
Figure 33. Time Limit Curve Above 205 C Reflow
for Tin Lead (Sn/Pb) process.
damage to the modules, and can adversely affect
long-term reliability.
In a conventional Tin/Lead (Sn/Pb) solder process
peak reflow temperatures are limited to less than
o
o
235 C. Typically, the eutectic solder melts at 183 C,
wets the land, and subsequently wicks the device
connection. Sufficient time must be allowed to fuse
the plating on the connection to ensure a reliable
solder joint. There are several types of SMT reflow
technologies currently used in the industry. These
surface mount power modules can be reliably
soldered using natural forced convection, IR (radiant
infrared), or a combination of convection/IR. For
reliable soldering the solder reflow profile should be
established by accurately measuring the modules CP
connector temperatures.
300
P eak Temp 235oC
REFLOW TEMP (°C)
250
Co o ling
zo ne
1-4oCs -1
Heat zo ne
max 4oCs -1
200
150
So ak zo ne
30-240s
100
Tlim above
205oC
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount
packages is detailed in J-STD-033 Rev. A (Handling,
Packing, Shipping and Use of Moisture/Reflow
Sensitive Surface Mount Devices). Moisture barrier
bags (MBB) with desiccant are required for MSL
ratings of 2 or greater. These sealed packages
should not be broken until time of use. Once the
original package is broken, the floor life of the product
at conditions of <= 30°C and 60% relative humidity
varies according to the MSL rating (see J-STD-033A).
The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when
stored at the following conditions: < 40° C, < 90%
relative humidity.
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power
Modules: Soldering and Cleaning Application Note
(AN04-001).
0
REFLOW TIME (S)
Figure 32. Reflow Profile for Tin/Lead (Sn/Pb)
process.
240
235
MAX TEMP SOLDER (°C)
The Giga TLynxTM SMT modules have a MSL rating
of 2.
Post Solder Cleaning and Drying
Considerations
P reheat zo ne
max 4oCs -1
50
MSL Rating
230
225
220
215
210
205
200
0
10
LINEAGE POWER
20
30
40
50
60
19
GigaTLynxTM SMT Non-isolated Power Modules:
4.5 – 14Vdc input; 0.7Vdc to 2.0Vdc, 50A Output
Data Sheet
March 30, 2011
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 4. Device Codes
Device Code
Input
Voltage
Range
Output
Voltage
Output
Current
On/Off
Logic
Sequencing
Comcodes
APTS050A0X3-SRPHZ
4.5 – 14Vdc
0.7 – 2.0Vdc
50A
Negative
Yes
CC109155314
Table 5. Coding Scheme
TLynx
family
Sequencing
feature.
Input
voltage
range
Output
current
Output
voltage
AP
T
S
050A0
X
T = with
Seq.
S = 4.5 14V
50A
X=
programmable
output
On/Off
logic
No entry =
negative
Remote
Sense
Options
ROHS
Compliance
3
-SRP
Z
3=
Remote
Sense
4=
positive
S=
Surface
Mount
Z = ROHS6
R=
Tape&Reel
P=
Paralleling
Asia-Pacific Headquarters
Tel: +86.021.54279977*808
World Wide Headquarters
Lineage Power Corporation
601 Shiloh Road, Plano, TX 75074, USA
+1-888-LINEAGE(546-3243)
(Outside U.S.A.: +1-972-244-WATT(9288))
www.lineagepower.com
e-mail: [email protected]
Europe, Middle-East and Africa Headquarters
Tel: +49.89.878067-280
India Headquarters
Tel: +91.80.28411633
Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or
application. No rights under any patent accompany the sale of any such product(s) or information.
Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents.
© 2011 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved.
LINEAGE POWER
20
Document No: DS010-005 ver. 1.1
PDF name: APTS050A0X.pdf