LAS 4000 SERIES

400W

360W

320W

en ~280W

~ z

~240W

f

(i)

~200W

o a: lLJ

~ 160W

o a.

~ ~ 120W X <t

~ 80W

40W

o

" ^"-. _'"

FOR MODELS LAS-4105 TO -4128.

LAS-4205 TO -4228

'< ^/

" '" " ^1'\

\ \

20° 40° 60° 80° 100° 120° 1400

\

1600 CASE 1 TEMPERATURE COC)

Fig. 14 Power derating curve as a function of case 1 temperature

20 OW

80'11

",.,..

..

"

VV'

"'-~

4(111

'"

"

FOR MODELS LAS-4305 TO -4328

I'V'IAU LAS-4405 TO -4428

'vw

"'- / '

~ '"

"

8(NI

"

"

OW OW

" r\

\

OW ⁰

\

2

200 40° 60° 80⁰ 100° 1200 140° 1600 CASE 1 TEMPERATURE COC>

Fig. 14A Power derating curve as a function of case 1 temperature

"actual size"

33

(i) a..

20 NOTE·

MAXIMUM ALLOWABLE CURRENT MUST NOT EXCEED MAX. RATINGS INPUT-OUTPUT DIFFERENTIAL (VINAVG-VO AVG) Fig. 15 DC safe operating area as a function of module case temperature for LAS 4105-4128 and LAS 4205-4228

10 INPUT-OUTPUT DIFFERENTIAL (V_IN AVG-'b AVG) Fig. 17 DC safe operating area as a function of module case temperature for LAS 4305-4328 and LAS 4405-4428

34

20~--~---'-NO-T~E~,---~--'---'--1 MAXIMUM ALLOWABLE CURRENT MUST NOT EXCEED MAX. RATINGS INPUT-OUTPUT DIFFERENTIAL (VIN AVG-VO AVG)

Fig. 16 DC safe operating area asa function of heatsink thermal resistance to air at 40°C ambient temperature for LAS 4105-4128 and LAS 4205-4228

I-Z

INPUT-OUTPUT DIFFERENTIAL (VINAVG-'b AVG )

Fig. 18 DC safe operating area as a function of heats ink thermal resistance to air at 40°C ambient temperature for LAS 4305-4328 and LAS 4405-4428

Yo

Yo

V

/

0

v

V

0

VMAXIMUM

/

0

V

I

V

0 II

V

0

J

0 0 0

~O% ^30Y. 50% 70Yo 90 Yo IIOY. 130% 150%

RATED OUTPUT CURRENT ( 10 )

Fig. 19 Short circuit protection characteristic, LAS 4000 series

170%

"actual size"

35

.100.0

10.0

!/)

:E 1.0 :I: o

I IIJ

\)

g Z IIJ ~ O.

I-::J Q.

I-::J o

0.0 I

I

~LAS-4328 t-LAS-4128

LAS-43IS LAS-41IS 0.00 I~LAS-4305

I-LAS~4Ip~

I 0.000

10HZ

TIl ""

100HZ j..

v~

~

^VII'

/

VII' /

~ ^v II' ./.V

./

VII' /r.,.

~

^{V 1/ ~l/}

./

t~17 1./

1KHZ 10KHZ 100KHZ

FREQUENCY

Fig. 19A Typical output impedance vs. frequency

IMHZ

-Yo +Vo

o-_ _

=====j--'-II-t= __

^-o-VIN

' - - - . ( ) + ^VIN Fig. 20 4 pin Power Hybrid Voltage Regulator

'7--+---0 +VO

~---O-Vo

Fig. 21 4 pin power hybrid voltage regulator circuit

VOLT SENSE

+ 0 - - - , r - - - O V R E F (NON-INVERTING) INPUT VOLT SENSE

+ CURRENT SENSE

CURRENT SENSE .---_ _ _ ~ -V IN

o----~==4-~--~-~-+-~-~--, (CONTROL

OUTPUT TRANSMISSION EMITTER O--CURRENT SENSE

+ RESISTOR INTERNAL O· DRIVER TPUT

AMPLIFIER)

~----~-VIN

~---o+ VIN L - - - Q + V O

~---~-VO

Fig. 22 14 pin power hybrid voltage regulator

36

~II

^{+ C2}

L-4---~-+-Q+ Vo v ^SENSE

+ Fig. 23 Negative power hybrid voltage regulator circuit

VSENSE-VSENSE

Fig. 24 Power Hybrid Voltage Regulator used with parallel pass transistor for higher output current

NOTES FOR DETERMINING VALUES OF EXTERNAL COMPONENTS IN FIGURES 20 THROUGH 27

1. Minimum value of input filter capacitors C1 and C3 is determined by: C1, C3 = 1

0(1000 mfd/amp) recommended.

2. Minimum value of output capacitors C2 and C4 is determined by: C2,C4= 10(100mfd/amp).

3. Minimum value of output voltage adjust resistors R1 and R3 for LAS 2705 and LAS 2905 is 3K ohms. See note 4 to determine value for all other models.

4. Minimum value of output voltage adjust resistors R1 and R3 is determined by: R1, R3= (0.25Vo x 100m"2/V) ohms wirewound. Use next highest standard value.

5. Values of current sharing resistors R5 and R6 are determined by: R5, R6 = (N x 0.5V)/MAX I ohms ± 3% wirewound where N = number of emitter current sh~ring resistor required.

6. Nominal value of the current sharing resistor R10 for Fig. 24 is determined from following table.

r -__ ~~~~ _________ V~S~EN_S_E-o+

R10

CRI

CR2

Fig. 25 Dual, pos/neg regulator using complementary regulator with common input

Model

. 100[2 LAS 2705, 2706, 2712,2715

.150[2 LAS 2720

.200[2 LAS 2905, 2906, 2724

. 250[2 LAS 2728, 2912, 2915

7. Value of current sensing resistor R7 is determined by R7 =

(2.4V)/lo ohms, nominal, wirewound.

8, Nominal values of R8 and R11 1h.W film resistors (Fig. 27):

R8 Ohms R110hms Model

oo(open)

o

(short) LAS 2705, LAS 2905

15,500 4,500 LAS 2706, LAS 2906

9,700 12,300 LAS 2712, LAS 2912 9,700 11,700 LAS 2715, LAS 2915

9,700 11,000 LAS 2720

9,700 10,700 LAS 2724

9,700 10,300 LAS 2728

+

COMMON

+ C4

37

01 A5

Vo

~II

Fig. 26 Power Hybrid Voltage Regulator used as a driver (or higher current outputs using peak detector for control

amplifier input voltage

~II

R7

RS

RII

L-.f----...L.o+

L-~~---~

NOTE' VIN MIN.= 9.5V + Vo

Fig. 27 Power hybrid current regulator circuit

9. Rectifiers CR 1 and CR2 should be rated at peak inverse voltage of 50V and forward current equal at least to maximum rated 10 •

10. Value of Icbo drain resistor R9, is determined by: R9 = (Vo)/(N x MAX Icbo) ohms, ± 5% composition where N = number of externa I series pass transistors .

11. All fixed resistors shown on diagrams with given value in ohms are 1h.W composition.

12. Temperature rise of case 2, A TC2, is given by the following:

a) For no external heat sink on case 2, A TC2 = O. 25P 0

e

J 1 - A

b) For an external heat Sink on case 2 with thermal resistance ()

<>--~========:::t---t--t--t===---o+VIN

" - - - o - V I N

Fig. 28 4 pin Power Hybrid Voltage Regulator

"--I----~-Vo

~--~---~~~-~

C2 USED ONLY WITH LAS 2'-O-OS-.L-AS-2-02-a-M-OD-E-LS---ot _Vo

Fig. 29 4 pin power hybrid voltage regulator circuit

VOLT SENSE

+o---~ , - - - 0 _VREF

VOLT SENSE (NON·INVERTING)

INPUT

.----_ _ -<>-V_IN

o---~=l--_1_--_1_--+----+----+---+=~ (CONTROL AMPLIFIER)

" - - - - 0 -V IN ' - - - < > + V_IN

~---o+VO

' - - - 0 -Va

Fig.30 14 pin Power Hybrid Voltage Regulator

Fig. 31 Positive power hybrid voltage regulator circuit

38

Fig. 32 Negative power hybrid voltage regulator circuit

~II

VSENSE

Cz + Vo Fig. 33 Power hybrid voltage regulator used with parallel pass transistor for higher output current

NOTES FOR DETERMINING VALUES OF EXTERNAL COMPONENTS IN FIGURES 28 THROUGH 36

1. Minimum value of input filter capacitors C1 and C3 is determined by: C1, C3 = 10 (1000 mfd/amp) recommended.

2. Minimum value of output capacitors C2 and C4 is determined by: C2, C4 = 1₀(100 mfd/amp).

3. Minimum value of output voltage adjust resistors R1 and R3 for LAS 2205 and LAS 2405 is 3K ohms. See note 4 to determine value for all other models.

4. Minimum value of output voltage adjust resistors R1 and R3 is determined by: R1, R3 = (0.25Vo x 1000.u/V) ohms wirewound. Use next highest standard value.

5. Values of tracking reference voltage divider resistors R2 and R4 for all models except LAS 2205,2405,2206, and 2406 are determ ined by:

a) R2 = (2000V 0-7150) ohms, ± l%,1f2W film b) R4 = 7.15K ohms, ± l%,1f2W film

6. Value of tracking reference voltage divider resistor R2 and R4 for LAS 2205 and LAS 2405 is:

~II

~II

SLAVE

Fig.34 Dual tracking power hybrid voltage regulator circuit

a) R2 = 7.50K ± 1% %W film b) R4 = 2.43K ± 1% %W film

7. Value of tracking reference voltage divider resistor R2 and R4 for LAS 2206 and LAS 2406 is:

a) R2 = S.06K ± 1% %W film b) R4 = 4.02K ± 1% %W film

S. Values of current sharing resistors R5 and R6 are determined by: R5, R6 = (N x 0.5V)/MAX 10 ohms ± 3% wirewound where N = number of emitter current sharing resistors required.

9. Nominal value of the current sharing resistor R 1 0 for Fig. 33 is determined from table below:

R10 .100n.

.150n.

.200n.

.250n.

Model

LAS 2205,2206,2212,2215 LAS 2220

LAS 2405, 2406, 2224 LAS 222S, 2412,2415

10. Value of current sensing resistor R7 is determined by R7 = (2.4V)/l

o ohms, nominal, wirewound.

39

01 R!!

Vo +

~II

Fig.35 Power Hybrid Voltage Regulator used as a driver for higher current outputs using peak detector for

control amplifier input voltage

R7

I O

-R8

~II

NOTE: YIN MIN' 9.5Y + Yo

Fig. 36 Power hybrid current regulator circuit

11. RS (part of reference voltage divider) = 750 ohms nominal,

"hW film resistor for all models except LAS 2205,2405,2206, and 2406.

12. RS for LAS 2206 and 2406 is 3.2K nominal, "hW film.

13. RS for LAS 2205 and 2405 is not required.

14. Rectifiers CR 1 and C R2 should be rated at peak inverse voltage of 50 V and forward current equal at least to maximum rated 10.

15. Value of Icbodrain resistor R9, is determined by: R9 = (Vo)/(N x MAX Icbo) ohms, ±5% composition where N ⁼ number of external series pass transistors.

16. All fixed resistors shown on diagrams with given val ues in ohms are '4W composition.

17. Temperature rise of case 2, A TC2, is given by the following:

a) For no external heat sink on case 2.

A TC2 = 0. 25P OOJ 1 - A

b) For an external heat sink on case 2 with thermal resistance 0 0-HS2

ATC2 = x Po OJ1-A

50⁰ C/W + OHS2

+VIN (VACI CONTROL

+VO +VIN

-yo -VIN

Fig. 37 5,·Pin Power Hybrid Voltage Regulator

Fig. 38 5-Pin power hybrid voltage regulator circuit

VOLT SENSE

r - - - o V R E F

+ VOLT SENSE (NON-INVERTING)

INPUT

...__---0 (+VIN)(VAC) r - - - f - - + - + - + - - + - - - . (CONTROL

AMPLIFIER)

'---O+VIN ' - - - O - V I N '---o-~

'---0

^+Vo

Fig. 39 9·Pin Power Hybrid Voltage Regulator

VSENSE

Fig. 40 Positive power hybrid voltage regulator circuit

Fig. 41 Negative power hybrid voltage regulator circuit

40

MASTER

SLAVE

+ +

COMMON

COMMON SENSE

Fig.42 Dual tracking power hybrid voltage regulator circuit

NOTES:

1.

2.

3.

4.

5.

6.

7.

8.

Minimum value of input filter capacitors C1 and C3 is determined by: C1. C3 = 10 (1000 mfd/amp) recommended.

Minimum value of output capacitors C2 and C4 is determined by: C~, C4 = 10 (1 00 mfd/amp).

Minimum value of output voltage adjust resistors R 1 and R3 for LAS 4205 and LAS 4405 is 3K ohms. See note 4 to determine value for all other models.

Minimum value of output voltage adjust resistors R1 and R3 is determined by: R1. R3= (O.25Vo x 1000n/V) ohms wirewound. U'se next highest standard value.

Values of tracking reference voltage divider resistors R2 and R4 for all models except LAS 4205. 4405. 4206, and 4406 are determined by:

a) R2= (2000Vo -7150) ohms, ± 1%. %W film b) R4 = 7.15K ohms. ± 1%. %W film

Value of tracking reference voltage divider resistor R2 and R4 for LAS 4205 and LAS 4405 is:

a) R2=7.50K±1%%Wfilm b) R4 = 2.43K ± 1 % %W film

Value of tracking r-eference voltage divider resistor R2 and R4 for LAS 4206 and LAS 4406 is:

a) R2= 8.06K ± 1% %Wfilm b) R4 = 4.02K ± 1 % %W film

Rectifiers CR1 and CR2 should be rated at peak inverse voltage of 50V and forward curr~nt equal at least to maximum rated 10 ,

LAMBDA'S POWER HYBRID VOLTAGE REGULATORS

Dans le document LAMBDA POWER SUPPLY CATALOG & APPLICATION (Page 35-43)