12V PicoTLynxTM 3A: Non-Isolated DC-DC Power Module
4.5Vdc –14Vdc input; 0.59Vdc to 5.5Vdc output; 3A Output Current
RoHS Compliant
EZ-SEQUENCETM
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Industrial equipment
Vin+Vout+
Cin
Q1
VIN
PGOOD
MODULE
SEQ
ON/OFF
GND
VOUT
SENSE
RTUNE
CTUNE
TRIM
RTrim
Co
Features
Compliant to RoHS EU Directive 2002/95/EC (Z versions)
Compatible in a Pb-free or SnPb reflow environment (Z
versions)
DOSA based
Wide Input voltage range (4.5Vdc-14Vdc)
Output voltage programmable from 0.59Vdc to 5.5Vdc
via external resistor
TM
Tunable Loop
to optimize dynamic output voltage
response
Flexible output voltage sequencing EZ-SEQUENCE (APTS
versions)
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 6.25 mm
(0.48 in x 0.48 in x 0.246 in)
Wide operating temperature range [-40°C to
105°C(Ruggedized: -D), 85°C(Regular)]
UL* 60950-1Recognized, CSA
Certified, and VDE
‡
0805:2001-12 (EN60950-1) Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Data Sheet
†
C22.2 No. 60950-1-03
Description
The 12V PicoTLynxTM 3A power modules are non-isolated dc-dc converters that can deliver up to 3A of output current. These
modules operate over a wide range of input voltage (V
= 4.5Vdc-14Vdc) and provide a precisely regulated output voltage from
IN
0.59Vdc to 5.5Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over
current and overtemperature protection, and output voltage sequencing (APTS versions). The Ruggedized version (-D) is capable
of operation up to 105°C and withstand high levels of shock and vibration. 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
12V PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules
4.5Vdc –14Vdc input; 0.59Vdc to 5.5Vdc output; 3A 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 Device Symbol Min Max Unit
Input Voltage All V
Continuous
Sequencing Voltage APTS V
Operating Ambient Temperature All T
(see Thermal Considerations section) -D version T
Storage Temperature All T
IN
SEQ
A
A
stg
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage All VIN 4.5
Maximum Input Current All I
(VIN=4.5V to 14V, IO=I
Input No Load Current V
(VIN = 12.0Vdc, IO = 0, module enabled) V
Input Stand-by Current All I
(VIN = 12.0Vdc, module disabled)
Inrush Transient All I2t 1 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
; See Test Configurations)
I
Omax
)
O, max
= 0.6 Vdc I
O,set
= 3.3Vdc I
O,set
=0 to 14V, IO=
IN
All 43 mAp-p
IN,max
IN,No load
55 mA
IN,No load
1 mA
IN,stand-by
-0.3 15 Vdc
-0.3 V
-40 85 °C
-40 105 °C
-55 125 °C
⎯
3.5 Adc
17 mA
iN
14.0 Vdc
Vdc
Input Ripple Rejection (120Hz) All 50 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 fast-acting fuse with a maximum rating
of 5A (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.
12V PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules
4.5Vdc –14Vdc input; 0.59Vdc to 5.5Vdc output; 3A Output Current
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
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 All 0.5 Vdc
Output Regulation (for VO ≥ 2.5Vdc)
Line (VIN=V
Load (IO=I
Temperature (T
IN, min
O, min
to V
) All
IN, max
to I
) All
O, max
to T
ref=TA, min
) All
A, max
Output Regulation (for VO < 2.5Vdc)
Line (VIN=V
Load (IO=I
Temperature (T
IN, min
O, min
to V
) All
IN, max
to I
) All
O, max
to T
ref=TA, min
) All
A, max
Remote Sense Range All 0.5 V
Output Ripple and Noise on nominal output
(VIN=V
IN, nom
and IO=I
O, min
to I
Co = 0.1μF // 10 μF ceramic
O, max
capacitors)
VO > 3.3V Peak-to-Peak (5Hz to 20MHz bandwidth) All
RMS (5Hz to 20MHz bandwidth) All 35 45 mV
VO ≤ 3.3V Peak-to-Peak (5Hz to 20MHz bandwidth) All
RMS (5Hz to 20MHz bandwidth) All 20 40 mV
External Capacitance1
Without the Tunable Loo
TM
ESR ≥ 1 mΩAll C
With the Tunable Loo
TM
ESR ≥ 0.15 mΩ AllC
ESR ≥ 10 mΩ All C
Output Current All I
Output Current Limit Inception (Hiccup Mode ) All I
Output Short-Circuit Current (VO≤250mV) ( Hiccup Mode ) All I
Efficiency V
VIN= 12Vdc, TA=25°C V
IO=I
O, max , VO
= V
V
O,set
V
V
V
Switching Frequency All f
Dynamic Load Response
(dIo/dt=10A/μs; VIN = V
IN, nom
; V
= 1.8V, TA=25°C)
out
Load Change from Io= 50% to 100% of Io,max; Co = 0
Peak Deviation All V
Settling Time (Vo<10% peak deviation)
Load Change from Io= 100% to 50%of Io,max: Co = 0
Peak Deviation All V
Settling Time (Vo<10% peak deviation)
1
External capacitors may require using the new Tunable Loop
transient response. See the Tunable Loop
TM
section for details.
TM
feature to ensure that the module is stable as well as getting the best
12V PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules
4.5Vdc –14Vdc input; 0.59Vdc to 5.5Vdc output; 3A Output Current
General Specifications
Parameter Device Min Typ Max Unit
Calculated MTBF (IO=0.8I
APXS 25,017,068 Hours
Weight
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
On/Off Signal Interface
(VIN=V
Signal referenced to GND)
Device is with suffix “4” – Positive Logic (See Ordering Information)
Logic High (Module ON)
Input High Current All IIH
Input High Voltage All VIH
Logic Low (Module OFF)
Input Low Current All IIL
Input Low Voltage All VIL
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 All IIH — — 1 mA
Input High Voltage All VIH 3.5 — V
Logic Low (Module ON)
Input low Current All IIL — — 10 μA
Input Low Voltage All VIL -0.2 — 0.6 Vdc
Turn-On Delay and Rise Times
(VIN=V
Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which V
10% of V
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
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot (TA = 25oC 3.0 % V
VIN= V
With or without maximum external capacitance