DNL10S0A0R20PFB Delta Electronics, Inc., DNL10S0A0R20PFB Datasheet - Page 13

• Manufacturer Part Number: DNL10S0A0R20PFB
• Description: Delphi Dnl, 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.
Sequential Start-up
Sequential start-up (Figure 37) is implemented by placing
an On/Off control circuit between Vo
of PS2.
Simultaneous
Simultaneous tracking (Figure 38) 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
PRELIMINARY DS_DNL10SIP20_10132008
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
TRACK
On/Off
R3
Vin
PS1
On/Off
PS2
Vin
and the On/Off pin
PS2
Vo
PS2
)
Vo
PS2
Ratio-Metric
Ratio–metric (Figure 39) is implemented by placing the
voltage divider on the TRACK pin that comprises R1 and
R2, to create a proportional voltage with Vo
Track 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 PS
o PS
,
,
2
1
=
R
On/Off
1
R
Vin
+
2
R
2
PS1
Vo
R1
R2
PS1
TRACK
On/Off
Vin
The high for positive logic
The low for negative logic
PS2
PS1
Vo
PS2
to the
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