SQE48T30033-NGB0G POWER ONE, SQE48T30033-NGB0G Datasheet - Page 6

• Manufacturer Part Number: SQE48T30033-NGB0G
• Description: Module DC-DC 1-OUT 3.3V 30A 8-Pin 1/8-Brick
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of SQE48T30033-NGB0G

• Package: 81/8-Brick
• Output Current: 30 A
• Output Voltage: 3.3 V
• Input Voltage: 48 V
• Number Of Outputs: 1

Vin
current (originally obtained from the derating curves)
by the same percentage to ensure the converter’s
actual output power remains at or below the
maximum allowable output power.
Output Voltage Adjust /TRIM (Pin 6)
The output voltage can be adjusted up 10% or down
20% for Vout ≥ 1.5 V, and ±10% for Vout = 1.2 V
relative to the rated output voltage by the addition of
an externally connected resistor. For output voltage
3.3 V, trim up to 10% is guaranteed only at Vin ≥
40 V, and it is marginal (8% to 10%) at Vin = 36 V.
The TRIM pin should be left open if trimming is not
being used. To minimize noise pickup, a 0.1 µF
capacitor is connected internally between the TRIM
and SENSE(-) pins.
To increase the output voltage, refer to Fig. C. A trim
resistor, R
TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of:
for 3.3 – 1.5 V.
where,
When trimming up, care must be taken not to exceed
the converter‘s maximum allowable output power.
See the previous section for a complete discussion
of this requirement.
ZD-01961 Rev. 2.0, 05-Feb-10
R
R
R
V
Δ
V
T
T
T
O
O



INCR
INCR
INCR
NOM
REQ
Fig. C: Configuration for increasing output voltage.
(V


O



5.11(100
84.6
-
REQ
Δ
Required value of trim-up resistor kΩ]
Nominal value of output voltage [V]
Desired (trimmed) output voltage [V].
T-INCR
V
O
Vin (+)
ON/OFF

Vin (-)

-
NOM
V
7.2
, should be connected between the
O
1.225Δ
-

NOM
SQE48 Converter
Δ)V
)
(Top View)
O
[kΩ]
X

NOM
100

626
(1.2 V)
SENSE (+)
SENSE (-)
Vout (+)
Vout (-)

TRIM
10.22
[%]
R
T-INCR
www.power-one.com
36-75 VDC Input; 1.2-3.3 VDC @ 30 A Output
[kΩ],
Rload
SQE48T30 DC-DC Series Data Sheet
Trimming/sensing beyond 110% of the rated output
voltage is not an acceptable design practice, as this
condition could cause unwanted triggering of the
output overvoltage protection (OVP) circuit. The
designer should ensure that the difference between
the voltages across the converter’s output pins and its
sense pins does not exceed 10% of V
This equation is applicable for any condition of output
sensing and/or output trim.
[V
To decrease the output voltage (Fig. D), a trim
resistor, R
TRIM (Pin 6) and SENSE(-) (Pin 5), with a value of:
where,
and Δ is defined above.
Note:
The above equations for calculation of trim resistor values match
those typically used in conventional industry-standard quarter-
bricks (except for 1.2 V output).
Converters with output voltages 1.2 V is available with alternative
trim feature to provide the customers with the flexibility of second
sourcing has a character “T” in the part number. The trim
equations of “T” version of converters and more information can
be found in Application Note for Output Voltage Trim Function
Operation.
R
R
R
Vin
OUT
T
T
T


DECR
DECR
DECR
) (
Fig. D: Configuration for decreasing output voltage.




V

|
|
700
511
OUT
Δ
Δ
T-DECR
Required value of trim-down resistor [kΩ]
(
|
|



ON/OFF
Vin (+)
)]
Vin (-)
15
10.22

, should be connected between the
[V
SENSE
SQE48 Converter
) (
(Top View)

[kΩ]
[kΩ]

V
SENSE
(3.3 – 1.5 V)
(1.2 V)
SENSE (+)
SENSE (-)
(

Vout (+)
)]
Vout (-)
TRIM
OUT

V
(
O
Page 6 of 29
NOM
-
NOM
), or:
R
T-DECR
X
10%
Rload
[V]