STRS6525_技术文档

STR-S6525

OFF-LINE SWITCHING REGULATOR

– WITH POWER MOSFET OUTPUT

The STR-S6525 is specifically designed to meet the requirement

for increased integration and reliability in off-line flyback converters

operating in a constant OFF-time mode. The device incorporates the

primary control and drive circuit with a discrete avalanche-rated high-

voltage power MOSFET.

DRAIN

1

2

FAULT

LATCH

OSC.

SOURCE

R

S

3

4

5

6

7

COMMON

SYNC

Crucial system parameters such as maximum ON time and OFF

time are fixed during manufacture. Local control circuit decoupling and

layout are optimized within the device.

FAULT

UVLO

V

IN

FDBK

REF.

Cycle-by-cycle current limiting, soft start, under-voltage lock-out

with hysteresis, over-voltage protection, and thermal shutdown protect

the device during all normal and overload conditions. Over-voltage

protection, thermal shutdown, or an external fault signal be latched.

The dual requirements of dielectric isolation and low transient thermal

impedance and steady-state thermal resistance are satisfied in an over-

molded single-in-line power package.

SOFT START

FAULT-LATCH

TRIGGER

8

9

+

OVER-CURRENT

PROTECTION

Dwg. PK-002-1

Proven in substantial volumes, this device and its fixed-frequency

counterparts represents a significant advance in off-line SMPS reliability

growth and integration.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V_IN........................... 35 V

Drain-Source Voltage, V_DS.............. 600 V

Continuous Drain Current, I_D............ 6.0 A

1 ms Single-Pulse Drain Current,

I_DM................................................. 24 A

FEATURES

Single-Pulse Avalanche Energy,

E_A.............................................. 400 mJ

■ Constant OFF-Time Converter Operating Mode

■ Avalanche-Rated Power MOSFET Switch

■ Pulse-by-Pulse Current Limiting

Feedback Input Current, I_FDBK........ 20 mA

Fault-Latch Trig. Input Current, I_FL1.0 mA

dc ≤ 25%, I_FLM........................... -50 mA

Soft-Start Output Current, I_SS....... -3.0 mA

Over-Current Protection Voltage,

■ Latched Over-Voltage and Thermal Protection

■ Maximum ON Time and OFF Time Set During Manufacture

■ Internal Under-Voltage Lockout with Hysteresis

■ Over-Molded SIP with Integral Isolated Heat Spreader

■ External Synchronization Capability

V_OCP............................................. 3.5 V

Insulation Voltage,V_WM(RMS)........... 2000 V

Package Power Diss., P_D........ See Graph

FET Junction Temperature, T_J...... +150°C

Internal Frame Temperature, T_F... +125°C

Operating Temperature Range,

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

Storage Temperature Range,

T_stg............................. -30°C to +125°C

Always order by complete part number: STR-S6525 .

™

STR-S6525

OFF-LINE

SWITCHING REGULATOR

FUNCTIONAL BLOCK DIAGRAM

V

IN

5

DRAIN

1

2

R

S

UVLO

OVER-VOLT.

PROTECT

FAULT

LATCH

SOURCE

2 kΩ

Q

SOFT

START

REF.

TSD

7

OSC.

TRIGGER

0.01 µF

R

toff

FAULT-LATCH

TRIGGER

R

OVER-CURRENT

PROTECTION

ton

8

9

3

+

0.75 V

1000 pF

0.01 µF

COMMON

6

4

FDBK

SYNC

Dwg. FK-002-1

ALLOWABLE PACKAGE POWER DISSIPATION

MAXIMUM SAFE OPERATING AREA

60

100

MOUNTING SURFACE

TEMPERATURE

54 W

t

= 0.1 ms SINGLE PULSE

w

30

10

LIMITED

BY r

DS(on)

t

= 1 ms SINGLE PULSE

RECOMMENDED MAX.

FRAME TEMP. = +100°C

w

40

3.0

1.0

INFINITE HEAT SINK

LIMITED BY FRAME

TEMP. = +125°C MAX.

20

NO HEAT SINK

NATURAL COOLING

T

= +25°C

A

FREE AIR

0.3

3.2 W

0.1

3.0

0

10

30

100

300

1000

140

20

60

100

DRAIN-TO-SOURCE VOLTAGE in VOLTS

TEMPERATURE in °C

Dwg. GK-003-2

Dwg. GK-004-4

™

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

STR-S6525

OFF-LINE

SWITCHING REGULATOR

600

500

400

300

200

100

0

SINGLE PULSE

DRAIN CURRENT = 5 A

SUPPLY VOLTAGE = 50 V

ALLOWABLE AVALANCHE ENERGY

0

20

40

60

80

100

120

140

160

STARTING CHANNEL TEMPERATURE in °C

Dwg. GK-009-1

ELECTRICAL CHARACTERISTICS at T = +25°C, V = 18 V, voltage measurements are referenced to

A

IN

Common (pin 3) (unless otherwise noted).

Limits

Characteristic

Symbol

V_INT

Test Conditions

Min. Typ. Max. Units

On-State Voltage

Turn-on, increasing V_IN

Turn-off, decreasing V_IN

14.4

9.0

26

–

17.6

11

V

Under-Voltage Lockout

Over-Voltage Threshold

FET Leakage Current

FET ON Resistance

Output Fall Time

V_INQ

V_OVP(th)

I_DSS

r_DS(on)

t_f

31

V

V_DS= 600 V

300

µA

Ω

V_GS= 10 V, I_D= 3 A

V_DD= 200 V, I_D= 5 A, 10% to 90% V_DS

I_FDBK= 0

–

1.0 1.25

–

250

33

62

800

–

ns

µs

mV

V

Maximum ON Time

t_on

27

50

700

–

Minimum OFF Time

t_off

–

Over-Current Threshold

Feedback Threshold

Soft-Start Voltage

V_OCP(th)

V_FDBK(th)

V_SS

–

750

–

8.7

–

9.7

–

Sync. Trigger Threshold Volt.

Fault-Latch Trig. Threshold

Fault-Latch Holding Current

Fault-Latch Reset Voltage

Insulation RMS Voltage

V_SYNC(th)

V_FL(th)

I_INH

3.0

–

V

680

–

880

mV

µA

V

V_INreduced from 31 V to 8.5 V

340 400

V_INQ

I

_IN≤ 20 µA, V_INreduced from 31 V

6.5

2000

–

8.5

–

V_WM(RMS)

All terminals simultaneous reference

metal plate against backside

V

Supply Current

I_IN(ON)

I_IN(OFF)

T_J

Operating

9.0

–

15

200

–

mA

µA

Start up, V_IN=14 V

Thermal Shutdown

Thermal Resistance

125 150

2.0

°C

R_θJM

FET junction to mounting surface

–

°C/W

NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal.

Typical Data is for design information only.

STR-S6525

OFF-LINE

SWITCHING REGULATOR

TYPICAL CHARACTERISTICS

50

40

30

20

10

0

0.2

0.4

0.6

0.8

1.0

FEEDBACK CURRENT in mA

Dwg. GK-019

™

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

STR-S6525

OFF-LINE

SWITCHING REGULATOR

TYPICAL APPLICATION

WARNING: lethal potentials are present. See text.

+ OUTPUT

5

STR-S6525

1

2

R

S

+

Q

7

+

VOLTAGE

SENSE

+

– OUTPUT

★

8

9

3

+

6

4

150 Ω

TURN ON

TO PIN 6

TO PIN 8

Dwg. EK-001

APPLICATIONS INFORMATION

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

designs that embody these components must conform with applicable safety requirements. Precau-

tions 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.

The power MOSFET outputs of these devices are similar to the International Rectifier type IRFBC40. These devices

feature an excellent combination of fast switching, ruggedized device design, low on-resistance, and cost effectiveness.

Recommended mounting hardware torque:

4.34 – 5.79 lbf•ft (6 – 8 kg•cm or 0.588 – 0.784 Nm).

Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease:

Dow Corning 340, or equivalent

STR-S6525

OFF-LINE

SWITCHING REGULATOR

Dimensions in Inches

(for reference only)

0.953 ±0.008

T

REF.

M

0.610

±0.008

0.118

0.130

0.216

±0.008

_±0.008ø

0.130

±0.004

0.276

±0.016

0.216

9

1

0.016

0.100

±0.004

0.026

+0.008

–0.004

0.033

+0.008

–0.004

0.177

±0.028

PACKAGE

CENTER

LEAD

CENTER

Dwg. MK-003-9 in

NOTE: Exact body and lead configuration at vendor’s option within limits shown.

™

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

STR-S6525

OFF-LINE

SWITCHING REGULATOR

Dimensions in Millimeters

(controlling dimensions)

24.2 ±0.2

T

REF

M

15.5 ±0.2

3.3

5.5

±0.2

_±0.2ø

3.0

3.3

±0.1

7.0

±0.4

5.5

9

1

0.4

2.54

±0.1

0.85

+0.2

–0.1

0.65

+0.2

–0.1

4.5

±0.7

PACKAGE

CENTER

LEAD

CENTER

Dwg. MK-003-9 mm

NOTE: Exact body and lead configuration at vendor’s option within limits shown.

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.

STR-S6525

OFF-LINE

SWITCHING REGULATOR

POWER CONVERSION/POWER MANAGEMENT

SELECTION GUIDES

SWITCHING REGULATOR PMCMs

Part

Number*

Application

V_I

Max P_O

Power Switch

3002M

5 V Switching Regulator and a

9 V Switching Regulator†

7.0-33 V

–

500 mA

400 mA

Bipolar

3004M

5 V Switching Regulator and

Dual 9 V Switching Regulator

7.0-33 V

–

500 mA

2 x 400 mA

Bipolar

S5703

S5707

Quasi-Resonant Flyback Converter

110/120 V

140 W

500 V

850 V

6 A

Bipolar

85-265 V

220/240V

90 W

140 W

S5708

Quasi-Resonant Flyback Converter

85-265 V

220/240 V

120 W

180 W

850 V

7.5 A

Bipolar

F6624

F6626

F6628

F6652

F6653

F6654

F6656

F6672

F6674

F6676

S6703

S6704

S6707

Quasi-Resonant Flyback Converter

Quasi-Resonant Flyback converter

100/120 V

85-265 V

200/220 V

85-265 V

110/120V

110/120 V

130 W

190 W

290 W

86 W

450 V

650 V

900 V

500 V

850 V

0.92 Ω

0.58 Ω

0.35 Ω

2.8 Ω

1.95 Ω

1.15 Ω

0.71 Ω

7.7 Ω

4.49 Ω

2.81 Ω

6 A

MOSFET

Bipolar

120 W

190 W

300 W

50 W

76 W

115 W

140 W

100 W

5 A

Bipolar

85-265 V

220/240 V

90 W

140 W

6 A

Bipolar

S6708

S6709

Quasi-Resonant Flyback Converter

85-265 V

220/240 V

120 W

180 W

850 V

7.5 A

10 A

Bipolar

85-265 V

220/240 V

160 W

220 W

8033S

8050S

8090S

8120S

8150S

3.3 V Switching Regulator

5.0 V Switching Regulator

9.0 V Switching Regulator

12 V Switching Regulator

15 V Switching Regulator

5.5-28 V

7.0-40 V

12-40V

–

3 A

Bipolar

15-40 V

18-40 V

* Complete part number includes additional characters to indicate operating temperature range and/or package style.

† Also includes linear regulator output for 15.7 V at 1.0 A.

™

115 Northeast Cutoff, Box 15036

POWER CON_WV_orcE_esteR_{r, M}S_assI_acO_huseN_{tts 01}/₆P_15-O₀₀₃₆W₍₅₀₈E_{) 85}R_3-500M₀ANAGEMENT


型号：	STRS6525
厂家：	ALLEGRO MICROSYSTEMS
描述：	OFF-LINE SWITCHING REGULATOR WITH POWER MOSFET OUTPUT 与功率MOSFET输出离线开关稳压器稳压器开关输出元件
文件：	总8页 (文件大小：94K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

STRS6525 [ALLEGRO]

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