7.3 Block diagram of the I2C option

Refer to Fig 7-1 for description of the I2C block diagram and for typical application.

 

A0

Output Fail

 

OTP

 

A1

 

Temperature Alarm

 

A2

 

Fan Fail

 

REGISTER

 

AC Input Fail

 

 

 

A0

Output voltage

 

A1

Output current

 

A2

 

 

 

ADC

Temperature

A0

A0

 

A1

A1

 

A2

A2

 

 

EEPROM

 

Fig 7-1: I2C option bloack diagram

 

Serial CLOCK

 

 

Serial DATA

7.4 Operation and functions 7.4.1. Digital status

Digital status functions are provided by a PCF8574, 8-bit Register. It provides a single 8-bit word when read by the I2C controller. Fault is indicated by "1" and Good level is indicated by "0".

Refer to Table 7-1 for the register information.

 

BIT

 

FUNCTION

 

 

 

 

MEANING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

Output Fail

 

 

 

 

Output voltage is <80% +/- 5% of Vout rated

 

 

1

 

Over Temperature Protection

 

 

Internal temperature is over 80°C. Supply turns off.

 

2

 

Temperature Alarm

 

 

Internal temperature is over 70°C. Supply is on.

 

 

3

 

Fan Fail

 

 

 

 

Failure of an internal fan.

 

 

 

 

 

4

 

AC Input Fail

 

 

 

 

AC Input <85Vac

 

 

 

 

 

5

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

 

6

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

 

7

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

Table 7-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PCF8574 slave address:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

7

6

 

5

4

 

3

 

2

1

 

0

 

Value

0

1

 

0

0

 

A2

 

A1

A0

 

R/W

7.4.2 EEPROM functions

A 256 bytes EEPROM included in the I2C option. The EEPROM type is AT24C02 and it is programmed at the factory with the data shown in Table 7-2.

ADDRESS

BYTES

DATA

0

4

Number of fields

4

16

Manufacturer

20

20

Serial number

40

16

Revision

56

16

Country of manufacture

72

16

Model name

88

16

Output voltage

104

16

Date of manufacture

254

2

Checksum

Table 7-2

The slave EEPROM address is:

Bit

7

6

5

4

3

2

1

0

Value

1

0

1

0

A2

A1

A0

R/W

20

Page 23
Image 23
TDK FPS1000-24, FPS-T1U Block diagram of the I2C option, Operation and functions 7.4.1. Digital status, Eeprom functions

FPS1000-32, FPS-S1U, FPS1000-48, FPS1000-12, FPS-T1U specifications

TDK has established itself as a leading innovator in power supply solutions with its range of FPS series products, specifically designed for various demanding applications. Among these, the FPS1000-24, FPS-T1U, FPS1000-12, FPS1000-48, and FPS-S1U models stand out due to their advanced features, robust technologies, and versatile characteristics.

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