SGS Thomson Microelectronics TEA2164 Datasheet

SWITCH MODE POWER SUPPLY PRIMARYCIRCUIT

.

POSITIVE AND NEGATIVE OUTPUT CUR­RENTUP TO 1.2AAND – 1.7A

.

A TWO LEVEL COLLECTOR CURRENT LIMI­TATION

.

COMPLETETURN OFF AFTERLONG DURA­TIONOVERLOADS

.

UNDERANDOVER VOLTAGELOCK-OUT

.

SOFT START BY PROGRESSIVE CURRENT
LIMITATION

.

DOUBLEPULSESUPPRESSION

.

BURST MODE OPERATION UNDER STAND­BY CONDITIONS

DESCRIPTION

In amasterslave architecture,theTEA2164control
IC achieves the slave function.Primarilydesigned
for TV receivers and monitors applications, this
circuitprovidesaneasy synchronizationand smart
solutionfor low powerstand by operation.

Located at the primary side the TEA2164 Control
IC ensures:

- the powersupply start-up

- the power supply control under stand-by condi­tions

- the process of the regulation signalssent by the
mastercircuitlocated at the secondaryside

- directbasedriveofthebipolarswitchingtransistor

- the protection of the transistor and the power
supplyunder abnormalconditions.

For more details, refer toapplicationnote AN409.

TEA2164

POWERDIP16

(Plastic Package)

ORDER CODE : TEA2164

PINCONNECTIONS

LONG CAPACITOR OVERLOAD CAPACITOR

OSCILLATOR TIMING RESISTOR

OSCILLATOR TIMING CAPACITOR

December 1992

GROUND

I COPY

SUBSTRATE
SUBSTRATE

PULSE INPUT

V SUPPLY VOLTAGE

1
2
3
4
5
6
7
8

16

CC

OUTPUT STAGE POSITIVE SUPPLY VOLTAGE

15

OUTPUT (BASE CURRENT)

14

SUBSTRATE

13

SUBSTRATE

12

I SENSE

11

C (max.)

LOW FREQUENCY OSCILLATOR CAPACITOR

10

FEEDBACK INPUT IS BURST MODE

9

2164-01.EPS

1/15

TEA2164

BLOCK DIAGRAM

2/15

2164-02.EPS

TEA2164

Figure 1 : SimplifiedApplication Diagram

ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

CC

V+ Positive Power Supply of the Output Stage V15-V1 18 V
V– Negative Power Supply V4, 5, 12, 13-V1 – 5 V

-V–

V

CC

V+ - V–

I

out+

I

out–

T

T

stag

Positive Power Supply V16-V1 18 V

Total Power Supply V16-V4, 5, 12, 13 or V15-V4, 5, 12, 13 20 V

Positive Output Current 1.5 A
Negative Output Current 2 A
Operating Junction Temperature 150 °

j

Storage Temperature Range –40, + 150 °

2164-03.EPS

C
C

2164-01.TBL

THERMALDATA

Symbol Parameter Value Unit

R

th(j-c)

Junction Case Thermal Resistance 11 °

MAXIMUMPOWER DISSIPATION

2164-04.EPS

C/W

3/15

2164-02.TBL

TEA2164

RECOMMANDED OPERATING CONDITIONS

Symbol Parameter Min. Typ. Max. Unit

V

CC

V– Negative Power Supply (absolute value) (note 1) 0 5 V

V

– V– Total Power Supply 18 V

CC

I

out+

I

out–

Fsw Switching Frequency 50 khz

Ro Oscillator Resistor Range 30 150
Co Oscillator Capacitor Range 470 2700 pF

C1 StartingOscillator Capacitor Range 0.1 4.7 µ
C2 Repetitive Overload Protection Capacitor 1 22

V

in

T

oper

Positive Power Supply 10 14 V

Positive Output Current 1.2 A
Negative Output Current 1.7 A

 Input Pulses Amplitude (peak) (derivated pulses - time constant = 1 µs)

0.5 1 V

Operating Ambiant Temperature – 20 70 °

-

V

CC

I>0

14

<0

B

<0

I

B

1312

TEA2164

5

4

I

I

B
I

14

1

capacitive

<0

B

coupling

12 13

TEA2164

45 1

-

V

CC

I

B

kΩ

µF

F

C

2164-03.TBL

2164-05.EPS

ELECTRICAL OPERATING CHARACTERISTICS

=25oC, VCC=10V, V

T

amb

= 0V, potentialsreferencedto ground (Pin 1)

CC-

(unlessotherwise specified)

Symbol Parameter Min. Typ. Max. Unit

POWER SUPPLY

(start) Starting Voltage (VCCincreasing) 8 9 9.6 V

V

CC

V

(stop) Stopping Voltage (VCCdecreasing) 5 6.2 7.4 V

CC

∆V

CC

V

ccmax

I

ccstart

CURRENT LIMITATION AND PROTECTION (pin 11)

VCM1 Pulse by Pulse Current Limitation Threshold 720 840 970 mV
VCM2 Current Monitoring 2nd Threshold 1200 1350 1500 mV

∆VCM ∆VCM = VCM2 – VCM1

REPETITIVEOVERCURRENT PROTECTION

VCM3 Repetitive OvercurrentThreshold (pin 11) 700 900 1100 mV

VCM3-VCM1 (VCM3-VCM1) – 20 50 130 mV

VC2 Lock-out Voltage on Pin 3 2.4 3 3.6 V

I3 disch Capacitor C2 Discharge Current (synchronizedmode) 10 20 30 µ

I3 ch. Capacitor C2 Charge Current 50 80 110 µ

OSCILLATOR, MAX DUTY CYCLE, SYNCHRONIZATION

T

o

T

on(max)

Hysteresis (VCCstart – VCCstop) 2 2.8 3.5 V
Overvoltage Lock-out 14.8 15.5 16.2 V
Starting Positive Supply Current 0.5 0.8 1.5 mA

300 500 700 mV

Oscillator Initial Accuracy RT = 50 K, CT = 1 nF 19.3 21 22.7
Maximum Duty Cycle (T

= 1.05 To)607085%

syn

A
A

µs

2164-04.TBL

4/15

ELECTRICAL OPERATINGCHARACTERISTICS (continued)

Symbol Parameter Min. Typ. Max. Unit

OSCILLATOR, MAX DUTY CYCLE, SYNCHRONIZATION (continued)

T

syn

T

O

OUTPUT STAGE

I

14/I2

I

BON

VERY LOW FREQUENCY OSCILLATOR

Synchronization Window 1.0 1.5

IcCopy CurrentGain 1000
Base Current Starting Pulse 300 mA

Burst Duty Cycle 13 %

TEA2164

2164-05.TBL

I. FIELD OF APPLICATION

The TEA2164 control circuit has been designed
primarily for discontinuousmode flybackbuilt with
a master-slave architecture, whatever the field of
application.
Butdue to its capabilityto synchronizethe transis­tor switching-off with an external signal (line fly­back)and dueto an adaptedburst-modeoperation
for a low power stand-by operation, the TEA2164
offers a smart solution for monitors and TV sets
applications.
Powersupply main features:

- maximumoutput power 140W (transistorforced
gain : 3.5)

Figure 2 : MasterSlave PowerSupplyArchitecture

R

MAINS
INPUT

P

C

V

CC

2

- stand-bymode output power (1W ≤ Psb ≤ 6W ;
efficiency > 50%)

- operatingfrequencyup to 50kHz

- power-switch : bipolar transistor

Adaptedmaster-circuit :
Monitorapplication → TEA5170
Standard TV application → TEA2028B

TEA2029C
TEA2128
TEA5170

Digital TV application → TEA5170
(TEA2028B,TEA2029Cand TEA2128 are deflec-

tion processorswith built-in PWM generator).

Muting
Control

Remote

Stand-by

Remote

Stand-by

P

1

Synchronization

AUDIO

OUTPUT

STAGE

SCANNING

DEVICE

VOLTAGE

REGULATOR

TEA2164

P : Output voltage adjustement in normal mode

1

P : Output voltage adjustement in stand-by

2

TEA5170

PWM

µP

V

CC

INFRA-RED

RECEIVER

Small signal primary ground
Power primary ground
Secondary ground (isolated from mains)

2164-06.EPS

5/15