Datasheet > QM48T45010-PABT

QM48T45010-PABT

更新时间： 2023-05-15 00:00:00

品牌	Logo	应用领域
BEL		/
页数	文件大小	规格书
37页	644K
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DC-DC Regulated Power Supply Module, 1 Output, Hybrid,

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QM48T45010-PABT 数据手册

QM48 Series - 45A

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 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 10% of V_OUT(NOM),

or:

Over-Temperature Protection (OTP)

The converter will shut down under an over-temperature

condition to protect itself from overheating caused by opera-

tion outside the thermal derating curves, or operation in ab-

normal conditions such as system fan failure. After the con-

verter has cooled to a safe operating temperature, it will

automatically restart.

[VOUT(+) − VOUT(−)]−[VSENSE(+) − VSENSE(−)] ≤ VO - NOM X10% [V]

Safety Requirements

This equation is applicable for any condition of output sens-

ing and/or output trim.

The converters meet North American and International

safety regulatory requirements per UL60950 and EN60950

(pending). Basic Insulation is provided between input and

output.

Protection Features

To comply with safety agencies requirements, an input line

fuse must be used external to the converter. The Table be-

low provides the recommended fuse rating for use with this

family of products.

Input Under-Voltage Lockout

Input under-voltage lockout is standard with this converter.

The converter will shut down when the input voltage drops

below a pre-determined voltage.

The input voltage must be at least 35 V for the converter to

turn on. Once the converter has been turned on, it will shut

off when the input voltage drops below 31 V. This feature is

beneficial in preventing deep discharging of batteries used in

telecom applications.

Output Voltage

3.3 V

Fuse Rating

10-A

2.5 V

2.0 -1.5 V

1.2 - 1.0 V

7-A

5-A

3-A

Modules are UL approved for maximum fuse rating of 15-A.

To protect a group of modules with a single fuse, the rating

can be increased from the recommended values above.

Output Over-Current Protection (OCP)

The converter is protected against over-current or short cir-

cuit conditions. Upon sensing an over-current condition, the

converter will switch to constant current operation and

thereby begin to reduce output voltage. When the output

voltage drops below 60% of the nominal value of output volt-

age, the converter will shut down.

Electromagnetic Compatibility (EMC)

EMC requirements must be met at the end-product system

level, as no specific standards dedicated to EMC character-

istics of board mounted component dc-dc converters exist.

However, di/dt tests its converters to several system level

standards, primary of which is the more stringent EN55022,

Information technology equipment - Radio disturbance char-

acteristics - Limits and methods of measurement.

Once the converter has shut down, it will attempt to restart

nominally every 100 ms with a typical 1-2% duty cycle. The

attempted restart will continue indefinitely until the overload

or short circuit conditions are removed or the output voltage

rises above 60% of its nominal value.

Effective internal LC differential filter significantly reduces

input reflected ripple current, and improves EMC.

Output Over-Voltage Protection (OVP)

With the addition of a simple external filter, all versions of the

QmaX™ Series of converters pass the requirements of

Class B conducted emissions per EN55022 and FCC, and

meet at a minimum, Class A radiated emissions per EN

55022 and Class B per FCC Title 47CFR, Part 15-J. Please

contact di/dt Applications Engineering for details of this test-

ing.

The converter will shut down if the output voltage across

Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of

the OVP circuitry. The OVP circuitry contains its own refer-

ence, independent of the output voltage regulation loop.

Once the converter has shut down, it will attempt to restart

every 100 ms until the OVP condition is removed.

QM48T45 Family DS Ver 3 03-27-03

USA Toll Free 866 WOW-didt

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与QM48T45010-PABT相关器件

型号	品牌	获取价格	描述	数据表
QM48T45010-PABTG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QM48T45010-PACTG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid
QM48T45010-PBAPG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 45W, Hybrid, ROHS COMPLIANT, QUARTER BRICK
QM48T45010-PBAT	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QM48T45010-PBB0	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 150W, Hybrid, QUARTER BRICK PACKAGE-8
QM48T45010-PBBT	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QM48T45010-PBCTG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,
QM48T45010-PDA0	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 150W, Hybrid, QUARTER BRICK PACKAGE-8
QM48T45010-PDAPG	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, 45W, Hybrid, ROHS COMPLIANT, QUARTER BRICK
QM48T45010-PDAT	BEL	获取价格	DC-DC Regulated Power Supply Module, 1 Output, Hybrid,

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