Datasheet STR84145, STR83145 Datasheet (Allegro)

STR83145
STR84145

AND

Data Sheet

28190

INTERIM ISSUE

(subject to change without notice)

August 16, 1994

LATCH

+

2

MT1

3

MT2

4

GATE

1

DELAY

ABSOLUTE MAXIMUM RATINGS

OSC.

5

COMMON

Dwg. PK-005

LATCHED, UNIVERSAL

INPUT-VOLTAGE SWITCHES

Intended for power supplies with universal inputs (85 V to 265 V
rms), the STR83145 and STR84145 latched, universal input-voltage
switches incorporate timing, control, and drive circuitry with a high­current triac (bidirectional triode thyristor) switch. Each device senses
the applied ac line potential and automatically switches the rectifier and
associated capacitors between a voltage-doubler configuration (for line
voltages to 141 V) and a full-bridge configuration (for line voltages
greater than 149 V). This eliminates the possibility of user error with
adjustable jumpers or switches. Also, the related switch-mode power
stage need operate only over a reduced range of dc input voltages
when compared with "wide input" power supplies using a bridge rectifier
only. The reduction in dc input voltage range permits the use of lower­voltage capacitors and leads to a reduction in power stage stresses and
power dissipation. The STR83145 and STR84145 differ only in their
maximum ac current rating (10 A and 12 A, respectively).

The internal sensitive-gate triac is switched by a temperature­compensated constant-current gate driver driven by a 15 kHz pulse
train to reduce power dissipation. The switch-over voltage is accurately
set during manufacture for consistent operation. An user-adjustable
delay is provided to ensure start-up in the full-bridge mode. Once
established (by an input voltage greater than 149 V rms), an integral
latch holds the full-bridge mode to preclude false application of the
doubler mode during brownouts, voltage droops, or missing cycles.

The requirements of low transient thermal impedance and steady­state thermal resistance are satisfied in a molded, 5-lead single in-line
power package. Similar input-voltage switches, with a switch point of
159 V rms, are also available.

Repetitive Peak OFF-State Voltage,

V

............................................. 500 V

DRM

Static ON-State Current, I

STR83145...................................... 10 A

STR84145...................................... 12 A

Non-Repetitive Surge ON-State Current, I

STR83145.................................... 100 A

STR84145.................................... 120 A

Package Power Dissipation,

PD........................................ See Graph

Triac Junction Temperature, TJ..... +125°C

Frame Temperature, TM................ +100°C

Operating Temperature Range,

TA............................... -20°C to +125°C

Storage Temperature Range,

T

............................. -40°C to +125°C

stg

T(RMS)

TSM

FEATURES

■ Low Duty Cycle Triac Drive for Minimum Dissipation

■ For Universal Input Operation Between 85 V rms and 265 V rms

to 10 A or 12 A

■ Internal Latch Prevents False Mode Switching

■ Internal Sensitive-Gate Power Triac

■ Adjustable Start-Up Delay

■ Accurate 145 V rms Switch-Point Voltage

■ Low External Parts Count

■ Low Power Dissipation

■ Low-Power External Parts

Always order by complete part number:

Part Number Max. On-State Current
STR83145 10 A rms
STR84145 12 A rms

™

STR83145

3

512

4

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

FUNCTIONAL BLOCK DIAGRAM

GATE

MT1

DELAY

COMMON

REG.

+

7 V

MT2

LATCH

+

+

OSC.

Dwg. FK-004

ALLOWABLE PACKAGE POWER DISSIPATION

30

27 W

25

20

15

10

5

2 W

ALLOWABLE PACKAGE POWER DISSIPATION in WATTS

0

20 60 100

FREE AIR

40

150 mm x 150 mm x 2 mm

(WITH MICA SHEET)

100 mm x 100 mm x 2 mm

(WITH MICA SHEET)

75 mm x 75 mm x 2 mm

(WITH MICA SHEET)

TEMPERATURE in °C

P IS LIMITED BY T

DM

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

Copyright © 1994 Allegro MicroSystems, Inc.

P IS LIMITED BY T

80 1200

INFINITE HEAT SINK

(NO MICA SHEET)

D

J

Dwg. GK-010

™

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

SIMPLIFIED OPERATION

240–373 V peak

+

85–132 V rms

+

Voltage-Doubler Mode

ELECTRICAL CHARACTERISTICS

174–265 V rms

Full-Bridge Mode

at TA = +25°C, voltage measurements are referenced to Common (pin 3)

246–373 V peak

+

+

Dwg. EK-006

(unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

On-State Voltage V

TM

STR83145, IT = 10 A* – – 1.8 V
STR84145, IT = 12 A* – 1.6 – V

Off-State Current I

DRM

STR83145, VD = 500 V – – 100 µA

STR84145, VD = 500 V – 40 – µA
Starting Voltage V
Startup Time Delay t
DC Switch-Over Voltage V

S

D

C

VT = 2 V – – 100 V

C2 = 1 µF, V

V

≤ 1 V 200 205 210 V

DELAY

≥ 100 V dc 40 – 100 ms

MT1

Temperature Coefficient
of Switch-Over Voltage α

Input Current I

Delay Terminal Voltage V

DELAY

Triac Gate-Drive Osc. Freq. f
Latch Reset Voltage V
Thermal Resistance R

VC

MT1

o

R

θJM

-20°C ≤ TM ≤ +100°C–±45 – mV/°C

Voltage-doubler mode, V

Full-bridge mode, V

V

ref. MT1, V

gate

V

= 400 mV 2.0 – 15 V

GATE

MT1

= 100 V – 15 – kHz

MT1

= 195 V – – 10 mA

MT1

= 400 V – – 6.5 mA

FET channel to mounting surface – – 1.8 °C/W
NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal.

Typical Data is for design information only.
*In practical use, IT is recommended derated to 70%.

– – 7.0 V

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

TYPICAL CHARACTERISTICS

210

12

FULL SINE WAVE
CONDUCTION ANGLE θ1 + θ2 ≈ 360°

10

θ2

205

DC SWITCH-OVER VOLTAGE in VOLTS

200

-20 20 60 100

04080

FRAME TEMPERATURE in °C

40

30

dc

20

Dwg. GK-012

8

6

4

2

AVERAGE ON-STATE POWER LOSS in WATTS

0

04

θ1

2

STATIC ON-STATE CURRENT in AMPERES

40

30

20

O

F

6

8

10

Dwg. GK-013

10

TRIAC GATE-DRIVE DUTY CYCLE in %

0

-25 +50 +100

0 +25 +75 +125

AMBIENT TEMPERATURE in °C

V

MT1

= 100 V

10

TRIAC GATE-DRIVE OSCILLATOR FREQUENCY in kHz

0

Dwg. GK-008

APPLICATIONS INFORMATION

WARNING —

designs that embody these components must conform with applicable safety requirements. Precau­tions must be taken to prevent accidental contact with power-line potentials. Do not connect
grounded test equipment.

The use of an isolation transformer is recommended during circuit development and breadboarding.

These devices are designed to be operated at lethal voltages and energy levels. Circuit

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

™

35124

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

TYPICAL APPLICATION

85–265 V rms

RM11C

-t °

RBV SERIES

240–373 V peak

R1

+

C3

C4

+

C1

+

C2

+

+

+

+

External component values have been selected for

optimum device performance and reliability. Except for
C2, component values other than the following may
result in false operation of these devices.

C1 = 4.7 µF, 400 V
C2 = 1 µF, 50 V
C3 = 0.047 µF, 50 V
C4 = 0.047 µF, 250 V
R1 = 4.7 Ω

Turn-ON delay (forced full-bridge mode) may be

adjusted for desired system performance:

tD ≈ 68 x C

where tD is the delay time in ms

C2 is capacitance in µF

2

3000

1000

300

T = 25°C

100

VOLTAGE-DOUBLER MODE STARTUP TIME DELAY in ms

30

0.3 3.0 30

1.0

C2 CAPACITANCE in µF

M

10

Dwg. EK-007

Dwg. GK-011

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

Dimensions in Inches

(for reference only)

0.126

±0.004

Ø

1.102

±0.012

0.701

±0.012

0.157

±0.004

15

0.150

±0.004

0.100

±0.004

T

M

0.276

REF.

±0.008

0.866

±0.012

0.197

REF.

0.906

0.177

±0.020

±0.012

0.177

±0.008

0.079

±0.004

0.039

±0.004

+0.008

0.024

–0.004

0.177

±0.020

Dwg. MK-001-5 in

–0.040

+0.060

1.417

NOTES: 1. Exact body and lead configuration at vendor's option within limits shown.

2. Recommended mounting hardware torque: 4.34 – 5.79 lbf•ft.

3. The hatched area is exposed heat spreader, electrically common to pin 3.

4. Recommended 0.003" to 0.006" thick mica insulator with metal-oxide-filled, alkyl-degenerated oil base, silicone grease
(Dow Corning 340, or equivalent); or Bergquist Sil-Pad

37.5 mm

8.5 mm

0.335"

1.48"

3.2 mm

0.126"

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

®

.

+0.15 mm/0.060"

ø

–0

0.5 mm

0.020"

25 mm

Dwg. MK-004

R

0.98"

™

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

Dimensions in Millimeters

(controlling dimensions)

3.2

±0.1

28.0

Ø

±0.3

17.8

±0.3

15

4.0

±0.1

3.81

±0.1

2.54

±0.1

T

7.0

5.0

REF.

±0.3

4.5

±0.2

2.0

±0.1

+1.5

–1.0

REF.

M

±0.2

±0.3

22.0

23.0

36.0

1.0

4.5

±0.5

±0.1

0.6

4.5

±0.5

Dwg. MK-001-5 mm

+0.2
–0.1

NOTES: 1. Exact body and lead configuration at vendor's option within limits shown.

2. Recommended mounting hardware torque: 6 – 8 kgf•cm (0.588 – 0.785 Nm).

3. The hatched area is exposed heat spreader, electrically common to pin 3.

4. Recommended 0.08 mm to 0.15 mm thick mica insulator with metal-oxide-filled, alkyl-degenerated oil base, silicone
grease (Dow Corning 340, or equivalent); or Bergquist Sil-Pad

37.5 mm

8.5 mm

0.335"

1.48"

3.2 mm

0.126"

+0.15 mm/0.060"

ø

–0

®

.

0.5 mm

0.020"

25 mm

Dwg. MK-004

R

0.98"

STR83145

AND

STR84145

LATCHED, UNIVERSAL
INPUT-VOLTAGE SWITCHES

The products described here are manufactured in Japan by Sanken Electric Co.,

Ltd. for sale by Allegro MicroSystems, Inc.

Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. reserve the right to
make, from time to time, such departures from the detail specifications as may be
required to permit improvements in the design of their products.

The information included herein is believed to be accurate and reliable.
However, Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. assume no
responsibility for its use; nor for any infringements of patents or other rights of third
parties which may result from its use.

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

™