Datasheet > QL48T30012-NDA0

QL48T30012-NDA0

更新时间： 2023-06-15 00:00:00

品牌	Logo	应用领域
BEL		/
页数	文件大小	规格书
14页	322K
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DC-DC Regulated Power Supply Module, 1 Output, Hybrid

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QL48T30012-NDA0 数据手册

QL48T30012 DC-DC Converter Data Sheet

36-75 VDC Input; 1.2 VDC @ 30A Output

When using remote sense, the output voltage at the con-

RT−DECR = Required value of trim-down resistor [kΩ]

and Δ is as defined above.

verter can be increased by as much as 10% above the

nominal rating in order to maintain the required voltage

across the load. Therefore, the designer must, if necessary,

decrease the maximum current (originally obtained from the

derating curves) by the same percentage to ensure the con-

verter’s actual output power remains at or below the maxi-

mum allowable output power.

Converters are also available with alternative trim equations,

to provide the customers with the flexibility of second sourc-

ing:

485

RT−INCR

Output Voltage Adjust /TRIM (Pin 6)

511

RT−DECR

−10.22

| Δ |

The converter’s output voltage can be adjusted up 10% or

down 10% relative to the rated output voltage by the addition

of an externally connected resistor. For detailed description

of the trim feature and pre-calculated trimming resistor val-

ues, see Application Note 103.

For these converters, the last character in the part number is

“T”.

Family

The TRIM pin should be left open if trimming is not being

used. To minimize noise pickup, a 0.1 µF capacitor is con-

nected internally between the TRIM and SENSE(-) pins.

Vin (+)

ON/OFF

Vin (-)

Vout (+)

SENSE (+)

TRIM

Converter

(Top View)

R _T-INCR

Rload

Vin

To increase the output voltage, refer to Fig. 4. A trim resistor,

SENSE (-)

Vout (-)

_T-INCR, should be connected between the TRIM (Pin 6) and

SENSE(+) (Pin 7), with a value of:

84.6

Fig. 4: Configuration for increasing output voltage.

T−INCR

− 7.2 [kΩ]

where,

Family

RT−INCR = Required value of trim-up resistor kΩ]

VO−NOM = Nominal value of output voltage [V]

Vin (+)

ON/OFF

Vin (-)

Vout (+)

SENSE (+)

TRIM

Converter

(Top View)

Rload

Vin

R_T-DECR

(V^O-REQ− V^O-NOM)

SENSE (-)

Vout (-)

Δ =

X 100 [%]

V^{O -NOM}

VO−REQ = Desired (trimmed) output voltage [V].

Fig. 5: Configuration for decreasing output voltage.

When trimming up, care must be taken not to exceed the

converter‘s maximum allowable output power. See previous

section for a complete discussion of this requirement.

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 over-voltage protec-

tion (OVP) circuit. The designer should ensure that the dif-

ference between the voltages across the converter’s output

pins and its sense pins does not exceed 0.12 V, or:

To decrease the output voltage (Fig. 5), a trim resistor,

R_T-DECR, should be connected between the TRIM (Pin 6) and

SENSE(-) (Pin 5), with a value of:

700

[VOUT(+) − VOUT(−)]−[VSENSE(+) − VSENSE(−)] ≤ 0.12 [V]

RT−DECR

− 15 [kΩ]

| Δ |

This equation is applicable for any condition of output sens-

ing and/or output trim.

where,

MAR 26, 2003 revised to NOV 13, 2006

Page 6 of 14

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1...3 4 567 8 9...14

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与QL48T30012-NDA0相关器件

型号	品牌	获取价格	描述	数据表
QL48T30012-NDA0G	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDATG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDB0	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QL48T30012-NDB0G	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDBT	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDCT	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDCTG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QL48T30012-NDG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QL48T30012-PA	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QL48T30012-PAA0	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid

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