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参数资料
| 型号： | DC1743A |
| 厂商： | Linear Technology |
| 文件页数： | 16/28页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO LTM4613 |
| 产品培训模块： | µModule® Family of EN55022 Class B Certified Regulators |
| 设计资源： | DC1743A Design Files |
| 标准包装： | 1 |
| 系列： | µModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.3V，5V，12V |
| 电流 - 输出： | 8A |
| 输入电压： | 5 ~ 36 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 165kHz，250kHz，600kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4613 |
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LTM4613
APPLICATIONS INFORMATION
low level below 0.3V. During the start-up of the regulator,
the phase-locked loop function is disabled.
INTV CC and DRV CC Connection
An internal low dropout regulator produces an internal
5V supply that powers the control circuitry and DRV CC
for driving the internal power MOSFETs. Therefore, if
the system does not have a 5V power rail, the LTM4613
can be directly powered by V IN . The gate driver current
through the LDO is about 20mA. The internal LDO power
dissipation can be calculated as:
P LDO_LOSS = 20mA ? (V IN – 5V)
The LTM4613 also provides the external gate driver voltage
pin DRV CC . If there is a 5V rail in the system, it is recom-
mended to connect the DRV CC pin to the external 5V rail.
This is especially true for higher input voltages. Do not
apply more than 6V to the DRV CC pin.
Radiated EMI Noise
High radiated EMI noise is a disadvantage for switching
regulators by nature. Fast switching turn-on and turn-off
make the large di/dt change in the converters, which act
as the radiation sources in most systems. LTM4613 inte-
grates the feature to minimize the radiated EMI noise to
meet the most applications with low noise requirements.
An optimized gate driver for the MOSFET and a noise
cancellation network are installed inside the LTM4613
70
60
50
to achieve the low radiated EMI noise. Figure 7 shows a
typical example for the LTM4613 to meet the EN55022
Class B radiated emission limit.
Thermal Considerations and Output Current Derating
In different applications, LTM4613 operates in a variety
of thermal environments. The maximum output current is
limited by the environment thermal condition. Sufficient
cooling should be provided to help ensure reliable opera-
tion. When the cooling is limited, proper output current
derating is necessary, considering ambient temperature,
airflow, input/output condition, and the need for increased
reliability.
The thermal resistances reported in the Pin Configura-
tion section of the data sheet are consistent with those
parameters defined by JESD51-9. They are intended for use
with finite element analysis (FEA) software modeling tools
that leverage the outcome of thermal modeling, simula-
tion and correlation to hardware evaluation performed on
a μModule package mounted to a hardware test board.
This is also defined by JESD51-9, “Test Boards for Area
Array Surface Mount Package Thermal Measurements.”
The motivation for providing these thermal coefficients in
found in JESD51-12, “Guidelines for Reporting and Using
Electronic Package Thermal Information.”
Many designers may opt to use laboratory equipment
40
30
20
10
0
EN55022B LIMIT
–10
30
226.2
422.4 613.6
814.3
1010.0
FREQUENCY (MHz)
4613 F07
Figure 7. Radiated Emission Scan with 24V IN to
12V OUT at 8A Measured in 10 Meter Chamber
4613f
16
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相关代理商/技术参数 |
参数描述 |
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| DC1746A-A | 功能描述:EVALUATION KIT LOW EMI LTM2881-3 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:µModule® 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1746A-B | 功能描述:EVALUATION KIT LOW EMI LTM2881-5 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:µModule® 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1747A-A | 功能描述:EVALUATION LOW EM1 KIT LTM2882-3 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:µModule® 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1747A-B | 功能描述:EVALUATION KIT LOW EM1 LTM2882-5 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:µModule® 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1748A-A | 制造商:Linear Technology 功能描述:BOARD EVAL FOR LTM2883 |
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