TPD4144AK_技术文档

TPD4144AK

TOSHIBA Intelligent Power Device

High Voltage Monolithic Silicon Power IC

TPD4144AK

The TPD4144AK is a DC brush less motor driver using high voltage

PWM control. It is fabricated by high voltage SOI process. It is

three-shunt resistor circuit for current sensing. It contains level

shift high-side driver, low-side driver, IGBT outputs, FRDs and

protective functions for under voltage protection circuits and

thermal shutdown circuit. It is easy to control a DC brush less

motor by just putting logic inputs from a MPU or motor controller to

the TPD4144AK.

HDIP26-P-1332-2.00

Weight: 3.8 g (typ.)

Features

•

High voltage power side and low voltage signal side terminal are separated.

It is the best for current sensing in three shunt resistance.

Bootstrap circuit gives simple high-side supply.

Bootstrap diodes are built in.

A dead time can be set as a minimum of 1.4μs, and it is the best for a Sine-wave from drive.

3-phase bridge output using IGBTs.

FRDs are built in.

Included under voltage protection and thermal shutdown.

The regulator of 7V (typ.) is built in.

Package: 26-pin DIP.

This product has a MOS structure and is sensitive to electrostatic discharge. When handling this product, ensure that the

environment is protected against electrostatic discharge.

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TPD4144AK

Pin Assignment

Marking

Lot Code.

(Weekly code)

TPD4123K

TPD4144AK

Country of origin

Part No. (or abbreviation code)

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TPD4144AK

Block Diagram

V

BSU

BSV

BSW

18

CC

15

21

24

23

V

BB

7 V

V

REG

13

Regulator

Under-

voltage

Under-

voltage

Under-

voltage

Protection Protection Protection

Under-

voltage

Protection

High-side Level

Shift Driver

HU

HV

HW

LU

4

5

6

U

V

17

22

Thermal Shutdown

Input Logic

W

7

8

25

LV

Low-side

Driver

LW

9

SD

10

11

IS3

IS2

26

20

DIAG

IS1

19

GND

1/16

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TPD4144AK

Pin Description

Pin No.

Symbol

Pin Description

1

2

3

GND

NC

Ground pin.

Unused pin, which is not connected to the chip internally.

NC

The control terminal of IGBT by the high side of U. It turns off less than 1.5V.

It turns on more than 2.5V.

The control terminal of IGBT by the high side of V. It turns off less than 1.5V.

It turns on more than 2.5V.

The control terminal of IGBT by the high side of W. It turns off less than 1.5V.

It turns on more than 2.5V.

The control terminal of IGBT by the low side of U. It turns off less than 1.5V.

It turns on more than 2.5V.

4

5

6

7

8

HU

HV

HW

LU

The control terminal of IGBT by the low side of V. It turns off less than 1.5V.

It turns on more than 2.5V.

LV

The control terminal of IGBT by the low side of W. It turns off less than 1.5V.

It turns on more than 2.5V.

9

LW

SD

10

11

Input pin of external protection. (“L” active, It doesn't have hysteresis.)

With the diagnostic output terminal of open drain, a pull-up is carried out by resistance.

It turns on at the time of unusual.

DIAG

NC

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Unused pin, which is not connected to the chip internally.

7V regulator output pin.

V

REG

NC

Unused pin, which is not connected to the chip internally.

Control power supply pin.(15V typ.)

Ground pin.

V

CC

GND

U

U-phase output pin.

BSU

IS1

IS2

BSV

V

U-phase bootstrap capacitor connecting pin.

U-phase IGBT emitter and FRD anode pin.

V-phase IGBT emitter and FRD anode pin.

V-phase bootstrap capacitor connecting pin.

V-phase output pin.

V

High-voltage power supply input pin.

W-phase bootstrap capacitor connecting pin.

W-phase output pin.

BB

BSW

W

IS3

W-phase IGBT emitter and FRD anode pin.

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TPD4144AK

Equivalent Circuit of Input Pins

Internal circuit diagram of HU, HV, HW, LU, LV, LW input pins

2 kΩ

HU/HV/HW

LU/LV/LW

To internal circuit

6.5 V

Internal circuit diagram of SD pin

V

REG

2 kΩ

To internal circuit

SD

6.5 V

Internal circuit diagram of DIAG pin

DIAG

To internal circuit

26 V

250kΩ

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TPD4144AK

Timing Chart

HU

HV

HW

LU

LV

Input Voltage

LW

VU

VV

Output voltage

VW

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TPD4144AK

Truth Table

Input

LU

L

High side

Low side

DIAG

Mode

HU

H

L

HV HW

LV

H

L

LW

L

SD U phase V phase W phase U phase V phase W phase

Normal

L

H

L

H

L

H

L

H

L

*

L

H

L

H

L

H

L

H

*

H

L

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

L

H

L

ON

L

OFF

ON

L

H

L

ON

OFF

ON

L

OFF

ON

L

H

L

ON

OFF

ON

Thermal shutdown

V_CCUnder-voltage

V_BSUnder-voltage

SD

H

L

OFF

ON

L

H

L

ON

L

ON

L

H

L

ON

L

ON

L

H

L

ON

H

L

ON

L

H

L

ON

L

ON

L

H

L

ON

L

ON

L

H

L

ON

H

L

OFF

ON

L

H

L

OFF

ON

L

ON

L

H

L

OFF

L

ON

L

H

*

L

OFF

*

OFF

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TPD4144AK

Absolute Maximum Ratings (Ta = 25°C)

Characteristics

Symbol

Rating

Unit

V

500

V

BB

CC

out

Power supply voltage

V

18

Output current (DC)

Output current (pulse 1ms)

Input voltage

I

2

3

A

I

A

outp

V

-0.5 to 7

50

V

IN

V

current

I

mA

V

REG

DIAG voltage

V

20

DIAG

DIAG current

I

20

mA

Power dissipation

P

36

22

W

C(IGBT)

（IGBT 1 phase (Tc = 25°C) )

Power dissipation

P

C(FRD)

（FRD1 phase (Tc = 25°C) )

Operating junction temperature

Junction temperature

Storage temperature

T

-40 to 135

150

°C

jopr

T

j

T

-55 to 150

stg

Note: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the

significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if

the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum

ratings and the operating ranges.

Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook

(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report

and estimated failure rate, etc).

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TPD4144AK

Electrical Characteristics (Ta = 25°C)

Characteristics

Symbol

Test Condition

Min

Typ.

Max

Unit

V

⎯

50

13.5

⎯

280

15

⎯

450

16.5

0.5

5

BB

CC

BB

CC

Operating power supply voltage

V

I

V

= 450 V

= 15 V

BB

CC

BS

Current dissipation

mA

I

⎯

0.8

210

180

⎯

I

= 15 V, high side ON

= 15 V, high side OFF

⎯

410

370

⎯

BS (ON)

Bootstrap Current dissipation

μA

I

⎯

BS (OFF)

V

= “H”, V

CC

= 15 V

2.5

⎯

IH

IN

Input voltage

SD input voltage

Input current

V

= “L” , V

CC

⎯

1.5

⎯

IL

IN

V

SD

I

IH

= 15 V

⎯

2.5

⎯

CC

= 5 V

= 0 V

= 5 V

= 0 V

⎯

150

100

150

3.2

3.1

1.2

7.5

185

⎯

IN

μA

I

⎯

IL

IN

I

⎯

SDH

IN

SD Input current

μA

V

I

⎯

SDL

IN

V

H

= 15 V, I = 1 A, high side

⎯

2.3

2.1

0.8

7

CEsat

CC

C

Output saturation voltage

FRD forward voltage

V

L

= 15 V, I = 1 A, low side

⎯

CEsat

V H

C

I

= 1 A, high side

= 1 A, low side

= 500 μA

⎯

F

V

V L

F

⎯

BSD forward voltage

V

⎯

V

F (BSD)

Regulator voltage

V

= 15 V, I

= 15 V

= 30 mA

REG

6.5

135

⎯

REG

CC

Thermal shutdown temperature

Thermal shutdown hysteresis

TSD

⎯

°C

V

ΔTSD

50

11

11.5

9

V

under voltage protection

V

UVD

⎯

10

10.5

8

12

CC

BS

CC

under voltage protection recovery

under voltage protection

UVR

UVD

UVR

12.5

9.5

10.5

0.5

3

V

BS

under voltage protection recovery

8.5

⎯

9.5

⎯

V

DIAG saturation voltage

Output on delay time

Output off delay time

Dead time

V

I

= 5 mA

DIAG

V

DIAGsat

t

V

= 280 V, V

= 15 V, I = 1 A

⎯

1.2

1

μs

ns

on

BB

CC

C

= 15 V, I = 1 A

⎯

3

off

C

t

= 15 V, I = 1 A

1.4

⎯

dead

C

FRD reverse recovery time

t

= 15 V, I = 1 A

150

⎯

rr

C

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TPD4144AK

Application Circuit Example

15V

V

CC

15

18

21

24

23

BSU

BSV

BSW

+

C

5

4

V

BB

7 V

Under-

voltage

Under-

voltage

Under-

voltage

13

Regulator

V

REG

+

Protection Protection Protection

Under-

voltage

C

7

C

6

High-side

Level Shift

Driver

C

1

C C

2 3

Protection

Input Logic

C

4

5

6

7

8

9

HU

HV

HW

LU

17

22

25

Thermal

U

V

Control IC

or

Ｍ

Shutdown

Microcomputer

W

Low-side

Driver

LV

LW

IS3

26

20

19

11

10

DIAG

R

1

IS2

IS1

SD

R

2

1/16

GND

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TPD4144AK

External Parts

Typical external parts are shown in the following table.

Part

Typical

Purpose

Remarks

C , C , C

25 V/2.2 μF

25 V/10 μF

25 V/0.1 μF

25 V/1 μF

25 V/1000 pF

5.1 kΩ

Bootstrap capacitor

(Note 1)

(Note 2)

(Note 3)

-

1

2

4

5

6

7

1

2

3

C

R

V

power supply stability

CC

V

for surge absorber

CC

V

power supply stability

REG

V

for surge absorber

REG

DIAG pin pull-up resistor

SD pin pull-up resistor

10 kΩ

Note 1: The required bootstrap capacitance value varies according to the motor drive conditions. The capacitor is

biased by V and must be sufficiently derated for it.

CC

Note 2: When using this product, adjustment is required in accordance with the use environment. When mounting,

place as close to the base of this product leads as possible to improve the ripple and noise elimination.

Note 3: The DIAG pin is open drain. If not using the DIAG pin, connect to the GND.

Handling precautions

（１） Please control the input signal in the state to which the V

voltage is steady. Both of the order of the

CC

V

BB

power supply and the V

power supply are not cared about either.

CC

Note that if the power supply is switched off as described above, this product may be destroyed if the

current regeneration route to the V power supply is blocked when the V line is disconnected by a

BB

relay or similar while the motor is still running.

（２） The excess voltage such as the voltage surge which exceed the absolute maximum rating is added, for

example, may destroy the circuit. Accordingly, be careful of handling this product or of surge voltage in

its application environment.

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TPD4144AK

Description of Protection Function

(1)

Under voltage protection

This product incorporates under voltage protection circuits to prevent the IGBT from operating in

unsaturated mode when the V voltage or the V voltage drops.

CC

BS

When the V

power supply falls to this product internal setting V UVD (=11 V typ.), all IGBT outputs

CC

shut down regardless of the input. This protection function has hysteresis. When the V

power supply

CC

reaches 0.5 V higher than the shutdown voltage (V UVR (=11.5 V typ.)), this product is automatically

CC

restored and the IGBT is turned on again by the input. DIAG output is reversed at the time of V

CC

under-voltage protection. When the V

reversed.

power supply is less than 7 V, DIAG output isn't sometimes

CC

When the V supply voltage drops V UVD (=9 V typ.), the high-side IGBT output shuts down.

BS

When the V

supply voltage reaches 0.5 V higher than the shutdown voltage (V UVR (=9.5 V typ.)),

BS

the IGBT is turned on again by the input signal.

(2)

Thermal shutdown

This product incorporates a thermal shutdown circuit to protect itself against the abnormal state when

its temperature rises excessively.

When the temperature of this chip rises to the internal setting TSD due to external causes or internal

heat generation, all IGBT outputs shut down regardless of the input. This protection function has

hysteresis ΔTSD (=50 °C typ.). When the chip temperature falls to TSD − ΔTSD, the chip is automatically

restored and the IGBT is turned on again by the input.

Because the chip contains just one temperature detection location, when the chip heats up due to the

IGBT, for example, the differences in distance from the detection location in the IGBT (the source of the

heat) cause differences in the time taken for shutdown to occur. Therefore, the temperature of the chip

may rise higher than the thermal shutdown temperature when the circuit started to operate.

SD pin

(3)

SD pin is the input signal pin to shut down the internal output IGBT. Output of all IGBT is shut down

after delay times (2 μs typ.) when "L" signal is input to the SD pin from external circuit (MCU etc.). It is

possible to shut down IC when overcurrent and others is detected by external circuit. Shut down state is

released by all of IC input signal "L". At open state of SD pin, shut down function can not operate.

Timing Chart of Under voltage protection and SD Function

SD

LIN

HIN

V_BS

V_CC

t_on

LO

t_off

t_on

HO

t_off

DIAG

Note: The above timing chart is considering the delay time.

Safe Operating Area

2

1.9

0

450

400

Power supply voltage V (V)

BB

Figure 1 SOA at Tj = 135 °C

Note 1: The above safe operating areas are Tj = 135 °C (Figure 1).

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TPD4144AK

V

H – T

V

L – T

CEsat

j

3.8

3.4

3.0

2.6

2.2

1.8

1.4

3.8

3.4

3.0

2.6

2.2

1.8

1.4

V

= 15 V

V

= 15 V

CC

I

= 1.6A

= 1.2A

C

I

= 1.6A

C

I

C

I

= 1.2A

C

I

= 0.8A

= 0.4A

C

I

= 0.8A

= 0.4A

C

I

C

I

C

−50

0

50

100

150

18

−50

0

50

100

150

18

Junction temperature

T

(°C)

Junction temperature

T

(°C)

j

V H – T

F

V L – T

F

j

3.2

2.8

3.2

2.8

2.4

2.0

1.6

I

= 1.6A

= 1.2A

F

I

= 1.6A

= 1.2A

F

2.4

2.0

1.6

I

F

I

= 0.8A

= 0.4A

F

I

= 0.8A

= 0.4A

F

I

F

1.2

−50

1.2

−50

0

50

100

0

50

100

Junction temperature

T

(°C)

Junction temperature

T

(°C)

j

I

– V

V

– V

REG CC

CC

2.0

1.5

1.0

0.5

0

8.0

7.5

7.0

6.5

6.0

T =−40°C

T =25°C

T =135°C

j

T =−40°C

j

T =25°C

j

T =135°C

j

I

= 30 mA

REG

12

14

16

12

14

16

Control power supply voltage

V

(V)

Control power supply voltage

V

(V)

CC

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TPD4144AK

t

– T

t – T

off j

on

j

3.0

2.0

1.0

0

3.0

2.0

1.0

0

V

= 280 V

= 15 V

V

= 280 V

= 15 V

BB

CC

BB

CC

I

= 1 A

I = 1 A

C

High-side

Low-side

High-side

Low-side

−50

0

50

100

150

−50

0

50

100

150

Junction temperature

T

(°C)

Junction temperature

T

(°C)

j

V

UV – T

V

UV – T

j

CC

j

BS

10.5

10.0

9.5

12.5

12.0

V

UVD

UVR

V

UVD

UVR

CC

BS

11.5

11.0

10.5

9.0

8.5

8.0

−50

10.0

−50

0

50

100

150

0

50

100

150

Junction temperature

T

(°C)

Junction temperature

T

(°C)

j

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TPD4144AK

I

– V

I

– V

BS (OFF) BS

BS (ON)

BS

400

T =−40°C

j

T =−40°C

j

T =25°C

j

T =25°C

j

T =135°C

j

T =135°C

j

300

200

100

0

300

200

100

0

12

14

16

18

12

14

16

18

Bootstrap voltage V_BS(V)

Bootstrap voltage

V

(V)

BS

W

– T

j

W

– T

j

toff

ton

200

150

100

80

I

= 1.6A

C

I

= 1.6A

C

60

100

50

= 1.2A

= 0.8A

C

I

= 1.2A

= 0.8A

C

40

I

C

I

C

20

0

I

= 0.4A

I

= 0.4A

C

0

−50

0

50

100

150

−50

0

50

100

150

Junction temperature

T

j

(°C)

Junction temperature

T

(°C)

j

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TPD4144AK

Test Circuits

IGBT Saturation Voltage (U-phase low side)

1 A

VM

HU = 0V

HV = 0V

HW = 0V

LU = 5V

LV = 0V

LW = 0V

V

_CC= 15V

FRD Forward Voltage (U-phase low side)

1 A

VM

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TPD4144AK

V

CC

Current Dissipation

IM

V_CC= 15V

Regulator Voltage

30mA

VM

V_CC= 15V

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TPD4144AK

Output ON/OFF Delay Time (U-phase low side)

IM

U = 280V

280Ω

2.2μF

HU = 0V

HV = 0V

HW = 0V

LU = PG

LV = 0V

LW = 0V

V_CC= 15V

5V

90%

10%

LU = PG

90%

10%

IM

t_on

t_off

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TPD4144AK

V

CC

Under-voltage Protection Operating/Recovery Voltage (U-phase low side)

U = 18V

2kΩ

HU = 0V

HV = 0V

HW = 0V

LU = 5V

LV = 0V

LW = 0V

V

_CC= 15V → 6V

VM

6V → 15V

*:Note: Sweeps the V

pin voltage from 15 V and monitors the U pin voltage.

CC

The V

pin voltage when output is off defines the under voltage protection operating voltage.

CC

Also sweeps from 6 V to increase. The V

recovery voltage.

pin voltage when output is on defines the under voltage protection

CC

V

BS

Under voltage Protection Operating/Recovery Voltage (U-phase high side)

V

BB

= 18V

VM

BSU = 15V → 6V

6V → 15V

2kΩ

HU = 5V

HV = 0V

HW = 0V

LU = 0V

LV = 0V

LW = 0V

V_CC= 15V

*:Note:Sweeps the BSU pin voltage from 15 V to decrease and monitors the V pin voltage.The BSU pin voltage when

BB

output is off defines the under voltage protection operating voltage.Also sweeps the BSU pin voltage from 6 V to

increase and change the HU pin voltage at 5 V→0 V→5 V each time. It repeats similarly output is on. When the

BSU pin voltage when output is on defines the under voltage protection recovery voltage.

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TPD4144AK

Bootstrap Current Dissipation (U-phase high side)

IM

BSU = 15V

HU = 0V/5V

HV = 0V

HW = 0V

LU = 0V

LV = 0V

LW = 0V

V_CC= 15V

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TPD4144AK

Turn-ON/OFF Loss (low side IGBT + high side FRD)

V_BB/U = 280V

IM

5mH

2.2μF

L

VM

HU = 0V

HV = 0V

HW = 0V

LU = PG

LV = 0V

LW = 0V

V_CC= 15V

Input (LU = PG)

IGBT (C-E Voltage)

(U-GND)

Power Supply Current

W_toff

W_ton

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TPD4144AK

Package Dimensions

HDIP26-P-1332-2.00

Unit : mm

Weight: 3.8 g (typ.)

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TPD4144AK

RESTRICTIONS ON PRODUCT USE

•

Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information in

this document, and related hardware, software and systems (collectively “Product”) without notice.

This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with TOSHIBA’s

written permission, reproduction is permissible only if reproduction is without alteration/omission.

Though TOSHIBA works continually to improve Product’s quality and reliability, Product can malfunction or fail. Customers are

responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and

systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily injury

or damage to property, including data loss or corruption. Before customers use the Product, create designs including the Product, or

incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of all relevant

TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes for Product

and the precautions and conditions set forth in the “TOSHIBA Semiconductor Reliability Handbook” and (b) the instructions for the

application with which the Product will be used with or for. Customers are solely responsible for all aspects of their own product design

or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such design or applications;

(b) evaluating and determining the applicability of any information contained in this document, or in charts, diagrams, programs,

algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for such designs

and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR APPLICATIONS.

•

Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring

equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document. Product

is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability

and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact

(“Unintended Use”). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace

industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment,

equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and

equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this document.

•

Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part.

Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any

applicable laws or regulations.

•

The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any

infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to any

intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise.

ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE

FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY WHATSOEVER,

INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR LOSS, INCLUDING

WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND LOSS OF DATA, AND

(2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO SALE, USE OF PRODUCT,

OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT.

•

Do not use or otherwise make available Product or related software or technology for any military purposes, including without limitation,

for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology

products (mass destruction weapons). Product and related software and technology may be controlled under the Japanese Foreign

Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product or related software or

technology are strictly prohibited except in compliance with all applicable export laws and regulations.

Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product.

Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,

including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of

noncompliance with applicable laws and regulations.

23

2012-02-15


型号：	TPD4144AK
厂家：	TOSHIBA
描述：	High Voltage Monolithic Silicon Power IC 高压硅单片电源IC 高压
文件：	总23页 (文件大小：377K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TPD4144AK [TOSHIBA]

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