Data Sheet
16V Pico TLynxTM 4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A output current
September 13, 2010
capacitance as specified in the electrical specification
table. Optimal performance of the module can be
achieved by using the Tunable LoopTM feature
described later in this data sheet.
Feature Descriptions
Remote Enable
The 16V Pico TLynxTM 4A power modules feature an
On/Off pin for remote On/Off operation. Two On/Off
logic options are available. In the Positive Logic
On/Off option, (device code suffix “4” – see Ordering
Information), the module turns ON during a logic High
on the On/Off pin and turns OFF during a logic Low.
With the Negative Logic On/Off option, (no device
code suffix, see Ordering Information), the module
turns OFF during logic High and ON during logic Low.
The On/Off signal is always referenced to ground. For
either On/Off logic option, leaving the On/Off pin
disconnected will turn the module ON when input
voltage is present.
100
90
80
70
1x10uF External Cap
60
1x47uF External Cap
50
40
30
20
10
0
2x47uF External Cap
4x47uF External Cap
0.5
2.5
4.5
6.5
Output Voltage(Volts)
For positive logic modules, the circuit configuration for
using the On/Off pin is shown in Figure 54.
Figure 53. Output ripple voltage for various
output voltages with external 1x10 µF, 1x47 µF,
2x47 µF or 4x47 µF ceramic capacitors at the
output (4A load). Input voltage is 12V.
VIN+
MODULE
Safety Considerations
Rpullup
I
1.5MEG
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, CSA C22.2 No. 60950-1-
03, and VDE 0850:2001-12 (EN60950-1) Licensed.
ON/OFF
+
2.05K
PWM Enable
ON/OFF
GND
V
ON/OFF
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.
Q1
_
Figure 54. Circuit configuration for using positive
On/Off logic.
The input to these units is to be provided with a fast-
acting fuse with a maximum rating of 6A in the
positive input lead.
For negative logic On/Off modules, the circuit
configuration is shown in Fig. 55.
VIN+
MODULE
Rpullup
1.5MEG
I
ON/OFF
PWM Enable
ON/OFF
GND
Q1
+
22K
22K
V
ON/OFF
Q2
_
Figure 55. Circuit configuration for using
negative On/Off logic.
LINEAGE POWER
15
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
