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参数资料
| 型号： | SQ48S03150-PS00 |
| 厂商： | Power-One |
| 文件页数： | 4/64页 |
| 文件大小： | 0K |
| 描述： | DC/DC EIGHTH BRICK |
| 标准包装： | 100 |
| 系列： | * |
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SQ48 DC-DC Series Data Sheet
36-75 VDC Input; 1.0-12 VDC Output
R T ? DECR =
? 10.22
[k ? ] (1.5 – 12 V)
R T ? DECR =
? 15
[k ? ] (1.2 V)
R T ? DECR =
? 17
[k ? ] (1.0 V)
designer must, if necessary, decrease the maximum
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 T-INCR , should be connected between the
TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of:
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.
To decrease the output voltage (Fig. D), a trim
resistor, R T-DECR , should be connected between the
TRIM (Pin 6) and SENSE(-) (Pin 5), with a value of:
511
Δ
700
Δ
700
| Δ |
where,
R T ? DECR = Required value of trim-down resistor [k ? ]
and Δ is defined above.
Note:
The above equations for calculation of trim resistor values match
those typically used in conventional industry-standard quarter-
R T ? INCR =
5.11(100 + Δ )V O ? NOM ? 626
1.225 Δ
for 1.5 – 12 V.
? 10.22
[k ? ],
bricks and one-eighth bricks (except for 1.2 V and 1.0 V outputs).
Converters with output voltages 1.2 V and 1.0 V are
available with alternative trim feature to provide the
customers with the flexibility of second sourcing.
? 7.2
? 9
R T ? INCR =
R T ? INCR =
84.6
Δ
120
Δ
[k ? ] (1.2 V)
[k ? ] (1.0 V)
These converters have a “T” character in the part
number. The trim equations of “T” version of
converters and more information can be found in
Application Note 103.
Semi Q Family
where,
R T ? INCR = Required value of trim-up resistor [k ? ]
V O ? NOM = Nominal value of output voltage [V]
Vin
Vin (+)
ON/OFF
TM
Converter
(Top View)
Vout (+)
SENSE (+)
TRIM
SENSE (-)
R T-DECR
Rload
Δ =
(V O - REQ ? V O - NOM )
V O - NOM
X 100 [%]
Vin (-) Vout (-)
Fig. D: Configuration for decreasing output voltage.
V O ? REQ = Desired (trimmed) output voltage [V].
Trimming/sensing beyond 110% of the rated output
voltage is not an acceptable design practice, as this
condition could cause unwanted triggering of the
Semi Q Family
Vin (+)
TM
Converter
Vout (+)
output overvoltage protection (OVP) circuit. The
designer should ensure that the difference between
Vin
ON/OFF
(Top View)
SENSE (+)
TRIM
R T-INCR
Rload
the voltages across the converter’s output pins and its
sense pins does not exceed 10% of V OUT ( NOM ), or:
SENSE (-)
[V OUT ( + ) ? V OUT ( ? )] ? [V SENSE ( + ) ? V SENSE ( ? )] ≤ V O - NOM X 10% [V]
Vin (-)
Vout (-)
This equation is applicable for any condition of output
Fig. C: Configuration for increasing output voltage.
sensing and/or output trim.
SEP 14, 2005 revised to NOV 06, 2006
Page 4 of 64
www.power-one.com
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相关代理商/技术参数 |
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|---|---|
| SQ48S03150-PS00G | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 15V 3.3A 8-Pin 1/8-Brick |
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