BTS50025-1TAD datasheet(30/51 Pages) INFINEON

部件名	BTS50025-1TAD

功能描述	Smart High-Side Power Switch

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制造商	INFINEON [Infineon Technologies AG]

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Data Sheet

30

Rev. 1.1

2017-03-30

BTS50025-1TAD

Smart High-Side Power Switch

Functional Description

Figure 27 Diagnostic Block Diagram

5.4.2

SENSE Signal in Different Operation Modes

5.4.3

SENSE Signal in the Nominal Current Range

Figure 28 and Figure 29 show the current sense as function of the load current in the power DMOS. Usually, a

pull-down resistor RIS is connected to the current sense pin IS. A typical value is 1 kΩ. The dotted curve

represents the typical sense current, assuming a typical dkILIS factor value. The range between the two solid

curves shows the sense accuracy range that the device is able to provide, at a defined current.

(5.3)

Table 5

Sense Signal, Function of Operation Mode1)

1) Z = High Impedance

Operation mode

Input Level

Output Level VOUT

Diagnostic Output (IS)2)

2) See Chapter 5.4.3 for Current Sense Range and Improved Current Sense Accuracy.

Normal operation

LOW (OFF)

~ GND

IIS(OFF)

Short circuit to GND

GND

IIS(OFF)

Overtemperature

~ GND

IIS(OFF)

Short circuit to VS

VS

IIS(OFF)

Open Load

Z

IIS(OFF)

Inverse current

> VS

IIS(OFF)

Normal operation

HIGH (ON)

~ VS

IIS = (IL / dkILIS) ± IIS0

Overcurrent condition

< VS

IIS = (IL / dkILIS) ± IIS0 or IIS(FAULT)

Short circuit to GND

GND

IIS(FAULT)

Overtemperature (after the event)

~ GND

IIS(FAULT)

Short circuit to VS

VS

IIS < IL / dkILIS ± IIS0

Open Load

VS

IIS0

Inverse current

> VS

<IIS0

Vs

IIS(FAULT)

IS

0

1

FAULT

ZIS(AZ)

RVS

VS-VOUT>2V

( IL / dkILIS ) ± IIS(0)

&

RSenseMos

IIS =

IL

dkILIS

+ IIS0 with (IIS ≥ 0)

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BTS50025-1TAD 数据表(PDF) 30 Page - Infineon Technologies AG

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BTS50025-1TAD 数据表(PDF) 30 Page - Infineon Technologies AG

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