UDT020A0X3-SRZ Lineage Power, UDT020A0X3-SRZ Datasheet - Page 15

• Manufacturer Part Number: UDT020A0X3-SRZ
• Description: DC/DC Converters & Regulators 3-14.4Vin .6-5.5Vout 20A Neg SMT Digital
• Manufacturer: Lineage Power

Specifications of UDT020A0X3-SRZ

• Product: Non-Isolated / POL
• Input Voltage Range: 3 VDC to 14.4 VDC
• Input Voltage (nominal): 12 V
• Output Voltage (channel 1): 0.6 VDC to 5.5 VDC
• Output Current (channel 1): 20 A
• Output Voltage: 0.6 VDC to 5.5 VDC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Preliminary Data Sheet
May 10, 2011
be larger than the minimum of 3V. .
Figure 41. Output Voltage vs. Input Voltage Set
Point Area plot showing limits where the output
voltage can be set for different input voltages.
Caution – Do not connect SIG_GND to GND
elsewhere in the layout
Figure 42. Circuit configuration for programming
output voltage using an external resistor.
Without an external resistor between Trim and
SIG_GND pins, the output of the module will be
0.6Vdc. To calculate the value of the trim resistor,
Rtrim for a desired output voltage, should be as per
the following equation:
Rtrim is the external resistor in kΩ
Vo is the desired output voltage.
Table 1 provides Rtrim values required for some
common output voltages.
16
14
12
10
8
6
4
2
0
0.5
V
ON/OFF
IN
(+)
1
Rtrim
1.5
SIG_GND
2
TRIM
V
=
VS+
VS─
Output Voltage (V)
O
2.5
(+)



(
Upper
Vo
3
12
−
3.5
0
6 .
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 20A output current
20A Digital Micro DLynx
Lower
)
4



R
k
trim
Ω
4.5
5
LOAD
5.5
6
Digital Output Voltage Adjustment
Please see the Digital Feature Descriptions
section.
Remote Sense
The power module has a Remote Sense feature to
minimize the effects of distribution losses by regulating
the voltage at the SENSE pin. The voltage between
the SENSE pin and VOUT pin should not exceed 0.5V.
Analog Voltage Margining
Output voltage margining can be implemented in the
module by connecting a resistor, R
Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, R
the Trim pin to output pin for margining-down. Figure
43 shows the circuit configuration for output voltage
margining. The POL Programming Tool, available at
www.lineagepower.com
also calculates the values of R
for a specific output voltage and % margin. Please
consult your local Lineage Power technical
representative for additional details.
Figure 43. Circuit Configuration for margining
Output voltage.
Digital Output Voltage Margining
Please see the Digital Feature Descriptions
section.
TM
: Non-isolated DC-DC Power Modules
MODULE
V
SIG_GND
O, set
0.6
0.9
1.0
1.2
1.5
1.8
2.5
3.3
5.0
Trim
Vo
(V)
Table 1
under the Downloads section,
Rtrim
Rtrim (KΩ)
margin-up
Q2
Q1
Open
13.33
6.316
4.444
2.727
40
30
20
10
margin-up
Rmargin-down
Rmargin-up
and R
margin-down
, from the
margin-down
, from