Daewoo DWP-28W2ZZF Service Manual download pdf (Page 47)

Appendix Service manual WP-795

- 20 -

1-7 -4 pin description

PIN NAME SYMBOL DESCRIPTION

1 Overcurrently

feedback

O.C. P/E.B. Input of over current detection signal and

feedback signal

2 Source S Mosfet source

3 Drain D Mosfet drain

4 Supply V

Input of power supply for control circuit

5 Ground GND Ground

1-7 -5 Control part - electrical characteristics

Rating

Description

IC pins

Number

Symbol

Min. Type Max.

Unit

Operation start voltage 4-5 V

(on) 14.4 16 17.6 V

Operation stop voltage 4-5 V

(off) 9 10 111 V

Circuit current in operation 4-5 I

(on) - - 30 mA

Circ. current in non-operation 4-5 I

(off) - - 100

Maximum off time - T

OFF

(max) 45 - 55

SEC

Minimum time for input of quaxi

resonant signals

1-5 T

(2) - - 1.0

SEC

Minimum off time - T

OFF

(min) - - 1.5

SEC

O.C.P./F.B. terminal threshold

voltage 1

1-5 V

(1) 0.68 0.73 0.78 V

O.C.P./F.B. terminal threshold

voltage 2

1-5 V

(2) 1.3 1.45 1.6 V

O.C.P./F.B. terminal extraction

current

1-2 I

OCP/FB

1.2 1.35 1.5 mA

OVP operation voltage 4-5 V

(OVP) 20.5 22.5 24.5 V

Latch circuit sustaining voltage 4-5 I

(H) - - 400

Latch circuit release voltage 4-5 V

(Loff) 6.6 - 8.4 V

Thermal shutdown operating

temperature

- T

(TSD) 140 - -

1-7 -6 MOSFET electrical characteristics

Rating

Description

IC pins

Number

Symbol

Min. Type Max.

Unit

Drain-to-source break down

voltage

3-2 V

DSS

650 - - V

Drain leakage current 3-2 I

DSS

- - 300

On-resistance 3-2 R

(on) - - 1.95

Ω

Switching time 3-2 tf - - 250 nsec

Thermal resistance - O

- F - - 0.95

C/W

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 69 70

Comments to this Manuals

No comments

Daewoo DWP-28W2ZZF Service Manual Page 47

Comments to this Manuals

Related products and manuals for CRT TVs Daewoo DWP-28W2ZZF