Data Sheet
December 2, 2010
12V Micro TLynx
TM
: Non-Isolated DC-DC Power Modules
4.5Vdc –14Vdc input; 0.69Vdc to 5.5Vdc output; 12A Output Current
Features
Compliant to RoHS EU Directive 2002/95/EC (Z
versions)
Compatible in a Pb-free or SnPb reflow
environment (Z versions)
Wide Input voltage range (4.5Vdc-14Vdc)
Output voltage programmable from 0.69Vdc to 5.5
Vdc via external resistor
Tunable Loop
TM
to optimize dynamic output voltage
response
Flexible output voltage sequencing EZ-
SEQUENCE (APTS versions)
Fixed switching frequency and ability to
synchronize with external clock
Output overcurrent protection (non-latching)
Overtemperature protection
Remote On/Off
Remote Sense
Power Good signal
Fixed switching frequency
Ability to sink and source current
Small size: 20.3 mm x 11.4 mm x 8.5 mm (0.8 in x
0.45 in x 0.334 in)
Wide operating temperature range [-40°C to
105°C(Ruggedized: -D), 85°C(Regular)]
Ruggedized (-D) version able to withstand high
levels of shock and vibration
UL*
60950-1Recognized,
CSA
†
C22.2 No.
60950-1-03 Certified, and
VDE
‡
0805:2001-12
(EN60950-1) Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
RoHS Compliant
EZ-SEQUENCE
TM
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Industrial equipment
VIN
PGOOD
SEQ
CTUNE
Q1
Vin+
VOUT
SENSE
RTUNE
Vout+
MODULE
Cin
Co
ON/OFF
GND
TRIM
RTrim
Description
The 12V Micro TLynx series of power modules are non-isolated dc-dc converters that can deliver up to 12A of
output current. These modules operate over a wide range of input voltage (V
IN
= 4.5Vdc-14Vdc) and provide a
precisely regulated output voltage from 0.69Vdc to 5.5Vdc, programmable via an external resistor. The new
Ruggedized version (-D) is capable of operation up to 105°C and can withstand high levels of shock and vibration.
Features include frequency synchronization, remote On/Off, adjustable output voltage, over current and
TM
overtemperature protection, power good and output voltage sequencing. 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.
†
‡
TM
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: DS06-137 ver. 1.18
PDF name: APTS012A0X_DS.pdf
Data Sheet
December 2, 2010
12V Austin MicroTLynx: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.69Vdc to 5.5Vdc output; 12A output current
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
Input Voltage
Continuous
Voltage on SEQ terminal
Voltage on SYNC terminal
Voltage on PG terminal
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
All
All
All
-D version
All
V
SEQ
V
SYNC
V
PG
T
A
T
A
T
stg
-0.3
-0.3
-0.3
-40
-40
-55
V
IN
12
6
85
105
125
Vdc
Vdc
Vdc
°C
°C
°C
Device
All
Symbol
V
IN
Min
-0.3
Max
15
Unit
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
=4.5V to 14V, I
O
=I
O, max
)
Input No Load Current
(V
IN
= 10.0Vdc, I
O
= 0, module enabled)
(V
IN
= 12.0Vdc, I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 12.0Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN
=0 to
14V
,
I
O
= I
Omax
; See Test Configurations)
Input Ripple Rejection (120Hz)
All
All
All
It
70
45
2
Device
All
All
Symbol
V
IN
I
IN,max
Min
4.5
Typ
⎯
Max
14.0
11.5
Unit
Vdc
Adc
V
O,set
= 0.69 Vdc
V
O,set
= 3.3Vdc
All
I
IN,No load
I
IN,No load
I
IN,stand-by
26
60
1.2
mA
mA
mA
1
As
mAp-p
dB
2
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 fast-acting fuse with a maximum rating of 15A (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.
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POWER
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Data Sheet
December 2, 2010
12V Micro TLynx
TM
: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.69Vdc to 5.5Vdc output; 12A output current
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions until end of life)
Adjustment Range (elected by an external resistor)
(Some output voltages may not be possible
depending on the input voltage – see Feature
Descriptions Section)
Output Regulation (for V
O
≥
2.5Vdc)
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Output Regulation (for V
O
< 2.5Vdc)
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Remote Sense Range
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
Co = 0.1μF // 10
μF
ceramic capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
RMS (5Hz to 20MHz bandwidth)
External Capacitance
ESR
≥
1 mΩ
With the Tunable Loop
ESR
≥
0.15 mΩ
ESR
≥
10 mΩ
Output Current
Output Current Limit Inception (Hiccup Mode )
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= 10Vdc, T
A
=25°C
V
IN
= 12Vdc, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
O, set
= 0.69Vdc
V
O, set
= 1.2Vdc
V
O,set
= 1.8Vdc
V
O,set
= 2.5Vdc
V
O,set
= 3.3Vdc
V
O,set
= 5.0Vdc
η
η
η
η
η
η
76.0
83.0
87.6
90.2
92.2
94.3
%
%
%
%
%
%
TM
1
TM
Device
All
All
Symbol
V
O, set
V
O, set
Min
-1.5
-2.5
Typ
Max
+1.5
Unit
% V
O, set
% V
O, set
⎯
+2.5
All
V
O
0.69
5.5
Vdc
All
All
All
All
All
All
⎯
⎯
⎯
⎯
⎯
+0.4
10
10
5
0.5
0.5
% V
O, set
mV
mV
mV
% V
O, set
Vdc
All
All
⎯
⎯
65
23
80
28
mV
pk-pk
mV
rms
Without the Tunable Loop
All
All
All
All
All
All
C
O, max
C
O, max
C
O, max
I
o
I
O, lim
I
O, s/c
0
0
0
0
⎯
⎯
⎯
150
2
100
1000
5000
12
μF
μF
μF
Adc
% I
o,max
Adc
__________________________________
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.
TM
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POWER
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Data Sheet
December 2, 2010
12V Micro TLynx
TM
: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.69Vdc to 5.5Vdc output; 12A output current
Electrical Specifications (continued)
Parameter
Switching Frequency
Frequency Synchronization
Synchronization Frequency Range
High-Level Input Voltage
Low-Level Input Voltage
Input Current, SYNC
Minimum Pulse Width, SYNC
Minimum Setup/Hold Time, SYNC
Dynamic Load Response
(dIo/dt=1A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 50% to 100% of
Io,max; 1μF ceramic// 10
μF
ceramic
Peak Deviation
Settling Time (Vo<10% peak deviation)
(dIo/dt=1A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 100% to 50%of Io,max:
1μF ceramic// 10
μF
ceramic
Peak Deviation
Settling Time (Vo<10% peak deviation)
2
2
Device
All
Symbol
f
sw
Min
⎯
520
Typ
500
Max
⎯
600
0.8
1
Unit
kHz
kHz
V
V
mA
ns
ns
All
All
V
SYNC
=2.5V
All
All
V
IH
V
IL
I
SYNC
t
SYNC
t
SYNC_SH
2.5
250
250
All
All
V
pk
t
s
⎯
⎯
360
50
⎯
mV
μs
All
All
V
pk
t
s
⎯
⎯
400
50
⎯
mV
μs
To meet set up time requirements for the synchronization circuit, the logic low width of the pulse must be greater than
100 ns wide.
General Specifications
Parameter
Calculated MTBF (I
O
=0.8I
O, max
, T
A
=40°C) Telcordia Issue 2 Method
1 Case 3
Weight
⎯
Min
Typ
16,250,892
3.68 (0.130)
⎯
Max
Unit
Hours
g (oz.)
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POWER
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Data Sheet
December 2, 2010
12V Micro TLynx
TM
: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.69Vdc to 5.5Vdc output; 12A output current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to GND)
Device is with suffix “4” – Positive Logic (See Ordering
Information)
Logic High (Module ON)
Input High Current
Input High Voltage
Logic Low (Module OFF)
Input Low Current
Input Low Voltage
Device Code with no suffix – Negative Logic (See Ordering
Information)
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Logic High (Module OFF)
Input High Current
Input High Voltage
Logic Low (Module ON)
Input low Current
Input Low Voltage
Turn-On Delay and Rise Times
(V
IN
=V
IN, nom
, I
O
=I
O, max ,
V
O
to within ±1% of steady state)
Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which V
IN
= V
IN, min
until V
o
=
10% of V
o, set
)
Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until V
o
= 10% of V
o, set
)
Output voltage Rise time (time for V
o
to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot (T
A
= 25 C
V
IN
= V
IN, min
to V
IN, max
,I
O
= I
O, min
to I
O, max
)
With or without maximum external capacitance
Over Temperature Protection
(See Thermal Considerations section)
Sequencing Delay time
Delay from V
IN, min
to application of voltage on SEQ pin
Tracking Accuracy
(Power-Up: 0.5V/ms)
(Power-Down: 0.5V/ms)
(V
IN, min
to V
IN, max
; I
O, min
to I
O, max
V
SEQ
< V
o
)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
All
All
All
4.45
4.2
0.25
Vdc
Vdc
Vdc
All
All
All
Ts
EQ-delay
V
SEQ
–V
o
V
SEQ
–V
o
10
100
150
msec
mV
mV
All
T
ref
133
°C
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
IH
V
IH
I
IL
V
IL
―
V
IN
– 1
⎯
⎯
⎯
⎯
⎯
⎯
25
V
IN,max
3
3.5
µA
V
mA
V
All
All
All
All
I
IH
V
IH
I
IL
V
IL
―
2.0
―
0
―
―
―
―
1
V
IN, max
10
1
mA
Vdc
μA
Vdc
All
Tdelay
―
2
―
msec
All
Tdelay
―
2
―
msec
All
Trise
―
5
―
3.0
msec
% V
O, set
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