DNL10S0A0S20NFD Delta Electronics, Inc., DNL10S0A0S20NFD Datasheet - Page 10

• Manufacturer Part Number: DNL10S0A0S20NFD
• Description: Delphi Dnl10, Non-isolated Point Of Load Dc/dc Power Modules 8.3-14vin, 0.75-5.0v/20a Out
• Manufacturer: Delta Electronics, Inc.

FEATURE DESCRIPTIONS (CON.
Table 1 provides Rtrim values required for some common
output voltages, while Table 2 provides values of external
voltage source, Vtrim, for the same common output
voltages. By using a 1% tolerance trim resistor, set point
tolerance of ±2% can be achieved as specified in the
electrical specification.
DS_DNL10SMD_03062009
Table 1
Table 2
VO (V)
0.7525
VO (V)
0.7525
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
Rtrim (KΩ)
Vtrim (V)
0.6835
0.6168
0.4167
41.424
22.464
13.047
Open
0.670
0.650
0.630
0.583
0.530
Open
9.024
7.416
5.009
3.122
1.472
)
The amount of power delivered by the module is the
voltage at the output terminals multiplied by the output
current. When using the trim feature, the output voltage
of the module can be increased, which at the same
output current would increase the power output of the
module. Care should be taken to ensure that the
maximum output power of the module must not exceed
the maximum rated power (
Voltage Margining
Output voltage margining can be implemented in the DNL
modules by connecting a resistor, R
pin to the ground pin for margining-up the output voltage
and by connecting a resistor, R
to the output pin for margining-down. Figure 37 shows
the circuit configuration for output voltage margining. If
unused, leave the trim pin unconnected. A calculation
tool is available from the evaluation procedure, which
computes the values of R
specific output voltage and margin percentage.
Figure 34: Circuit configuration for output voltage margining
Voltage Tracking
The DNL family was designed for applications that have
output voltage tracking requirements during power-up
and power-down. The devices have a TRACK pin to
implement three types of tracking method: sequential
start-up, simultaneous and ratio-metric. TRACK simplifies
the task of supply voltage tracking in a power system by
enabling modules to track each other, or any external
voltage, during power-up and power-down.
By connecting multiple modules together, customers can
get multiple modules to track their output voltages to the
voltage applied on the TRACK pin.
Vin
On/Off
Trim
GND
Vo
Rtrim
Vo.set x Io.max ≤ P max
margin-up
margin-down
and R
Q1
Rmargin-up
margin-up
Rmargin-down
Q2
, from the Trim pin
, from the Trim
margin-down
).
for a
10