DNL04S0A0R06NFD DELTA [Delta Electronics, Inc.], DNL04S0A0R06NFD Datasheet - Page 12

• Manufacturer Part Number: DNL04S0A0R06NFD
• Description: Delphi DNS, Non-Isolated Point of Load DC/DC Power Modules: 2.8-5.5Vin, 0.75-3.3V/6Aout
• Manufacturer: DELTA [Delta Electronics, Inc.]

FEATURE DESCRIPTIONS (CON.)
Sequential Start-up
Sequential start-up (Figure 40) is implemented by placing
an On/Off control circuit between Vo
of PS2.
Simultaneous
Simultaneous tracking (Figure 41) is implemented by
using the TRACK pin. The objective is to minimize the
voltage difference between the power supply outputs
during power up and down.
The simultaneous tracking can be accomplished by
connecting Vo
the voltage apply to TRACK pin needs to always higher
than the Vo
DS_DNS04SMD6A_10202006
On/Off
Vin
On/Off
Vin
PS2
PS1
PS1
set point voltage.
PS1
to the TRACK pin of PS2. Please note
Vo
PS1
R1
R2
Vo
PS1
C1
Q1
On/Off
R3
TRACK
Vin
PS1
On/Off
Vin
PS2
and the On/Off pin
PS2
Vo
PS2
Vo
PS2
Ratio-Metric
Ratio–metric (Figure 42) is implemented by placing the
voltage divider on the TRACK pin that comprises R1 and
R2, to create a proportional voltage with Vo
pin of PS2.
For Ratio-Metric applications that need the outputs of PS1
and PS2 reach the regulation set point at the same time.
The following equation can be used to calculate the value
of R1 and R2.
The suggested value of R2 is 10kΩ.
V
V
O
O
,
,
PS
PS
2
1
=
On/Off
R
1
Vin
R
+
2
R
2
PS1
Vo
PS1
R1
R2
TRACK
On/Off
Vin
The high for positive logic
The low for negative logic
PS2
PS1
to the Track
Vo
PS2
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