Data Sheet
September 13, 2010
16V Pico TLynx
TM
4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A 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 (8Vdc-16Vdc)
Output voltage programmable from 0.59Vdc to 8.0Vdc
via external resistor
Tunable Loop
TM
to optimize dynamic output voltage
response
Remote sense
Power Good signal
Fixed switching frequency
Output overcurrent protection (non-latching)
Overtemperature protection
Remote On/Off
Ability to sink and source current
Cost efficient open frame design
Small size: 12.2 mm x 12.2 mm x 7.25 mm
(0.48 in x 0.48 in x 0.29 in)
RTUNE
RoHS Compliant
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Industrial equipment
Vout+
Vin+
VIN
PGOOD
VOUT
SENSE
MODULE
Cin
Wide operating temperature range (-40°C to 85°C)
UL*
Recognized to UL60950-1, CAN/CSA
†
C22.2 No.
‡
60950-1-03, and EN60950-1(VDE 0805-1) Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
CTUNE
Q1
Co
ON/OFF
GND
TRIM
RTrim
Description
The 16V Pico TLynx
TM
4A power modules are non-isolated dc-dc converters that can deliver up to 4A of output current.
These modules operate over a wide range of input voltage (V
IN
= 8Vdc-16Vdc) and provide a precisely regulated output
voltage from 0.59Vdc to 8.0 Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output
voltage, over current and over temperature protection. A new feature, the Tunable Loop
TM
, 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: DS08-006 ver. 1.06
PDF name: APXK004A0X.pdf
Data Sheet
September 13, 2010
16V Pico TLynx
TM
4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A 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
Up to 10 seconds
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
All
T
A
-40
85
°C
Device
All
Symbol
V
IN
Min
-0.3
Max
18
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
=8V to 16V, I
O
=I
O, max
)
Input No Load Current
(V
IN
= 16.0Vdc, I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 16.0Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN
=0 to
16V
,
I
O
= I
Omax
; See Test Configurations)
Input Ripple Rejection (120Hz)
V
O,set
= 0.6 Vdc
V
O,set
= 8.0Vdc
All
All
All
All
I
IN,No load
I
IN,No load
I
IN,stand-by
It
50
-46
2
Device
All
All
Symbol
V
IN
I
IN,max
Min
8.0
Typ
⎯
Max
16.0
6.5
Unit
Vdc
Adc
mA
mA
mA
18
96.1
1.2
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 6 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.
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POWER
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Data Sheet
September 13, 2010
16V Pico TLynx
TM
4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point (with 0.5% tolerance for
external resistor used to set output voltage)
Output Voltage (Over all operating input voltage, resistive
load, and temperature conditions until end of life)
Adjustment Range (selected by an external resistor)
(Some output voltages may not be possible depending
on the input voltage – see Feature Descriptions Section)
Remote Sense Range
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 (in either sink or source mode)
Output Current Limit Inception (Hiccup Mode)
(current limit does not operate in sink mode)
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= 12Vdc, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
O,set
= 0.6Vdc
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
V
O,set
= 6.5Vdc
V
O,set
= 8.0Vdc
Switching Frequency
1
All
TM
TM
1
TM
Device
All
All
All
All
All
All
All
All
All
All
Symbol
V
O, set
V
O, set
V
O
Min
-1.5
-2.5
0.59
Typ
Max
+1.5
Unit
% V
O, set
% V
O, set
Vdc
Vdc
% V
O, set
% V
O, set
mV
mV
% V
O, set
V
⎯
+2.5
8.0
0.5
⎯
⎯
⎯
⎯
⎯
+0.4
10mV
10
5
0.4
0.5
All
All
⎯
90
36
100
38
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
⎯
⎯
⎯
22
470
3000
4
μF
μF
μF
Adc
% I
o,max
mA
rms
200
200
η
η
η
η
η
η
η
η
f
sw
⎯
74.2
83.7
87.7
90.2
91.7
93.7
94.9
96.1
600
⎯
%
%
%
%
%
%
%
%
kHz
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.
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POWER
3
Data Sheet
September 13, 2010
16V Pico TLynx
TM
4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current
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
14,353,850
⎯
1.92 (0.0677)
⎯
Max
Unit
Hours
g (oz.)
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)
All
T
ref
140
°C
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
IH
V
IH
I
IL
V
IL
3.5
⎯
-0.3
⎯
⎯
⎯
⎯
10
V
IN,max
1
0.8
µA
V
mA
V
All
All
All
All
I
IH
V
IH
I
IL
V
IL
―
3.5
―
-0.2
―
―
―
―
1
V
IN, max
10
0.3
mA
Vdc
μA
Vdc
All
Tdelay
―
2
―
msec
All
All
Tdelay
Trise
―
―
2
4
―
―
3
msec
msec
% V
O, set
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POWER
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Data Sheet
September 13, 2010
16V Pico TLynx
TM
4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current
Feature Specifications (cont.)
Parameter
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
PGOOD (Power Good)
Signal Interface Open Drain, V
supply
≤
5VDC
Output Voltage Limit for PGOOD
Pulldown resistance of PGOOD pin
All
All
90%
7
110%
50
V
O, set
Ω
All
All
All
3.6
0.4
4.0
Vdc
Vdc
Vdc
Device
Symbol
Min
Typ
Max
Units
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