ST52T400 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST52T400

8-BIT INTELLIGENT CONTROLLER UNIT (ICU) Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG

STMicroelectronics 

Figure 10.8 Phase angle Partialization Mode

1.5

VA2-A11

0.5

L

Load

0

Il

1.5

α

A2

(0.5) Phase Angle

A1

Il1

(1)

N

0.5

(1.5)

0

γ

(0.5)

Current Flow Angle

(1)

ST52T400/T440/E440/T441

Table 10.3 Configuration Register 10

Bit

Name Value

Description

0

POL

0

Set Positive Output

Pulse Polarity

1

Set Negative Output

Pulse Polarity

1

-

-

Not used

2

00

MODE

01

PWM Mode

Burst Mode

3

1X

Phase Partialization

0

Internal Clock Master

4

CKSL

1

External Clock

on Main1

5

TCST

6

IOSL

0

Triac Stop

1

Triac Start

0

Set MAIN2 as

Alternate Function

1

MAIN2 coinciding with

MAIN1

7

TCRST

0

1

Reset Configuration = “00000000”

Triac Reset

Triac Set

Table 10.4 Configuration Register 19

Bit

Name

Value

0 - 7 UTPMSB

Description

Output Impulse

Width most

significative bit

Table 10.5 Configuration Register 20

Bit

Name

Value

Description

0 - 7 UTPLSB

Output Impulse

Width least

significative bit

Reset Configuration = “00000000”

Figure 10.9 Phase Angle Partialization Mode

Mai1n.s5

Voltage

1

Tr

Tr/2

Ti

0.5

0

T1

(0.5) T1

(1)

Tmax

(1.5)

8 mS 10 mS

20 mSec

69/94

Share Link: