Data Sheet
12V Pico TLynxTM 6A: Non-isolated DC-DC Power Modules
4.5 – 14Vdc input; 0.59Vdc to 5.5Vdc output; 6A output current
November 22, 2010
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
R
TUNE and CTUNE for different values of ceramic output
capacitors up to 470uF 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 3A to 6A
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
1x47μF 2x47μF 4x47μF 6x47μF 10x47μF
RTUNE
270
220
150
75
75
CTUNE 2200pF 4700pF 8200pF 12nF
18nF
Table 3. Recommended values of RTUNE and CTUNE
to obtain transient deviation of ≤2% of Vout for a
3A step load with Vin=12V.
Vo
5V
3.3V
2.5V
1.8V
1.2V
0.6V
2x47μF
+
330μF
Polymer
100
3
Co
2x47μF 3x47μF 4x47μF 6x47μF
x330μF
Polymer
RTUNE 220
CTUNE 3900pF 6800pF 10nF 12nF
87mV 57mV 43mV 32mV 23mV 12mV
180
150
120
100
15nF 120nF
ΔV
LINEAGE POWER
17
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
