Datasheet > PT6465N

PT6465N

更新时间： 2024-02-17 19:06:38

品牌	Logo	应用领域
德州仪器 - TI		开关
页数	文件大小	规格书
10页	203K
描述
14A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, SMA12, VERTICAL MOUNT PACKAGE-12

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PT6465N 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	MODULE
包装说明：	, SIP12	针数：	12
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.82
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	VOLTAGE-MODE
最大输入电压：	5.5 V	最小输入电压：	4.5 V
标称输入电压：	5 V	JESD-30 代码：	R-XSMA-T12
功能数量：	1	端子数量：	12
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	14 A	封装主体材料：	UNSPECIFIED
封装等效代码：	SIP12	封装形状：	RECTANGULAR
封装形式：	MICROELECTRONIC ASSEMBLY	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	NO	切换器配置：	BUCK
最大切换频率：	300 kHz	技术：	HYBRID
温度等级：	INDUSTRIAL	端子形式：	THROUGH-HOLE
端子位置：	SINGLE	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

PT6465N 数据手册

Application Notes

PT6460 & PT6470 Series

Output Remote Sense

Operating Features and System Considerations

for the PT6460 & PT6470 Regulator Series

The (+)Sense pin allows the regulator to compensate for

limited amounts of ‘IR’ voltage drop in the positive output

connection resistance. This is the voltage drop incurred

in the PCB trace between Vout (pins 9 & 10) of the regu-

lator and the load some distance away. Connecting (+)Sense

to the positive load terminal improves the voltage regu-

lation at the load, particularly when the load current

fluctuates. Although not recommended, leaving (+)Sense

disconnected will not damage the regulator or the load

circuitry. An internal 10 Ω resistor, connected between

the sense pin and the output, keeps the output voltage in

regulation.

The PT6460 (5-V input) and the PT6470 (3.3-V input)

series of integrated switching regulators (ISRs) provide

step-down voltage conversion for output loads of up to

14 A.

Power up & Soft-Start Timing

Following either the application of a valid input source

voltage, or the removal of a ground signal to the Inhihit*

control pin (with input power applied), the regulator will

initiate a soft-start power up. A soft start slows the rate at

which the output voltage rises and introduces a short time

delay, t_d(approximately 2 ms), into the power-up sequence.

Figure 1-1 shows the power-up characteristic of a PT6464

(5-V input, 1.8-V output) with a 8.5-A load.

With the sense pin connected, the difference between

the voltage measured between V_outand GND at the

regulator, and that measured from (+)Sense to GND, is

the amount of IR drop being compensated by the regula-

tor. This should be limited to 0.3 V maximum.

Note: The remote sense feature is not designed to compensate

for the forward drop of non-linear or frequency dependent

components that may be placed in series with the converter

output. Examples include OR-ing diodes, filter inductors,

ferrite beads, and fuses. When these components are enclosed

by the remote sense connections they are effectively placed

inside the regulation control loop, which can adversely affect

the stability of the regulator.

Figure 1-1

Vo (1V/Div)

Vin (2V/Div)

Pre-Bias Startup

In complex digital systems an external voltage can some-

times be present at the output of the regulator during

power up. For example, this voltage may be backfed

through a dual-supply logic component such as an FPGA

or ASIC. Another path might be via a clamp diode (to a

lower supply voltage) as part of a power-up sequencing

implementation.

Iin (2A/Div)

t_d

HORIZ SCALE: 5ms/Div

Although the PT6460 (5-V input) and PT6470 (3.3-V

input) series of regulators will sink current under steady-

state conditions, they will not do so during startup. This

feature allows these regulators to start up while an external

voltage is simultaneously applied to the output. To facilitate

this feature the input voltage must always be greater than

or equal to the output voltage throughout the power-up

and power-down sequence. Startup includes both the

application of a valid input source voltage, or the removal

of a ground signal from the Inhibit* control (pin 1) with

a valid input source applied. The output of the regulator

is also effectively off (tri-state), during the period that

the Inhibit* control is held low.

Over-Current Protection

To protect against load faults, these ISRs incorporate

output over-current protection. Applying a load that

exceeds the over-current threshold (see data sheet speci-

fications) will cause the regulated output to shut down.

Following shutdown the ISR will periodically attempt to

recover by initiating a soft-start power-up. This is often

described as a “hiccup” mode of operation, whereby the

module continues in a cycle of successive shutdown and

power up until the load fault is removed. During this

period, the average current flowing into the fault is

significantly reduced. Once the fault is removed, the

converter automatically recovers and returns to normal

operation.

Note: If the pre-bias is greater than the nominal regulation

voltage, the module will begin sinking current at the end of its

soft-start power-up sequence. This could overstress the regulator if

the current exceeds its rated output.

For technical support and more information, see inside back cover or visit www.ti.com

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PT6465N 替代型号

型号	品牌	替代类型	描述	数据表
PT6445C	TI	完全替代	6A SWITCHING REGULATOR, 400kHz SWITCHING FREQ-MAX, SMA12, ROHS COMPLIANT, SMD-12
PT6463N	TI	完全替代	14A SWITCHING REGULATOR, SMA12, SIP-12

与PT6465N相关器件

型号	品牌	获取价格	描述	数据表
PT6466	TI	获取价格	14-A 5-V Input Adjustable Integrated Switching Regulator
PT6466A	TI	获取价格	14A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, SMA12, HORIZONTAL MOUNT PACKAGE-12
PT6466C	TI	获取价格	暂无描述
PT6466N	TI	获取价格	14A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, SMA12, VERTICAL MOUNT PACKAGE-12
PT6467	TI	获取价格	14-A 5-V Input Adjustable Integrated Switching Regulator
PT6467A	TI	获取价格	14A SWITCHING REGULATOR, SMA12, SIP-12
PT6467N	TI	获取价格	14A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, SMA12, VERTICAL MOUNT PACKAGE-12
PT6470	TI	获取价格	14-A 3.3-V Input Adjustable Integrated Switching Regulator
PT6472	TI	获取价格	14-A 3.3-V Input Adjustable Integrated Switching Regulator
PT6472A	TI	获取价格	暂无描述

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