str-a6151 Allegro MicroSystems, Inc., str-a6151 Datasheet

str-a6151

Manufacturer Part Number

str-a6151

Description

Flyback Switching Regulators | Str-a6131, Str-a6132, Str-a6151, Str-a6159, Str-a6153e, And Str-a6169

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.STR-A6151.pdf (7 pages)

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Bonase Electronics (HK) Co., Limited

Part Number:

STR-A6151

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SANKEN

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Meier Automation Equipment Co., Limited

Part Number:

STR-A6151

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SANKEN

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Current page: 1 of 7
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Control Supply Voltage, V

Drain-Source Voltage, V

Drain Switching Current, I

Peak Drain Switching Current, I

Single-Pulse Avalanche Energy, E

Start-Up-Pin Voltage Range,

OCP Voltage Range,

FB/OLP Voltage Range,

Package Power Dissipation, P

MOSFET Channel Temp., T

Internal Frame Temp., T

Operating Temperature Range,

Storage Temperature Range,

* Drain switching current is limited by tem-

perature (page 2) and safe operating area

(page 4).

†For the availability of parts meeting -40°C

requirements, contact Allegro’s Sales Represen-

tative.

ABSOLUTE MAXIMUM RATINGS

STR-A6131 . . . . . . . . . . . . . . 3.2 A*

STR-A6132 . . . . . . . . . . . . . . 4.0 A*

STR-A6131 . . . . . . . . . . . . . . . 3.2 A

STR-A6132 . . . . . . . . . . . . . . . 4.0 A

STR-A6131 . . . . . . . . . . . . . . 32 mJ

STR-A6132 . . . . . . . . . . . . . . 78 mJ

control (V

MOSFET (V

total . . . . . . . . . . . . . . . . . . . . 1.5 W

startup

OCP

FB/OLP

. . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . . . . . . . –0.5 V to +6 V

. . . . . . . . . –0.3 V to +600 V

. . . . . . . . . . –0.5 V to +10 V

at T

DSS

× I

CC(ON)

= +25°C

× I

-20°C to +125°C†

) . . . . . . 1.35 W

-40°C to +125°C

) . . . . . 0.15 W

DSS . . . . . .

. . . . +125°C

. . . . 35 V

. +150°C

500 V

STR-A6131

STR-A6132

regulators specifically designed to satisfy the requirements for increased

integration and reliability in flyback converters. They incorporate a

primary control and drive circuit with avalanche-rated power

MOSFETs. The STR-A6132 features higher switching current and

avalanche-energy ratings and lower on-resistance.

VAC input, these devices can be used in a range of applications, from

DVD and VCR players to ac adapters for cellular phones and digital

cameras. An auto-standby function reduces power consumption at light

load, while multiple protections, including the avalanche energy guaran-

teed MOSFET, provide high reliability of system design.

esis, overvoltage protection, and thermal shutdown protect the power

supply during the normal overload and fault conditions. Overvoltage

protection and thermal shutdown are latched after a short delay. The

latch may be reset by cycling the input supply. Low start-up current and

a low-power standby mode selected from the secondary circuit completes

a comprehensive suite of features. Both devices are provided in an 8-pin

mini-DIP plastic package.

Always order by complete part number, e.g., STR-A6131 .

from Allegro MicroSystems

Sanken Power Devices

Rugged 500 V Avalanche-Rated MOSFET

Simplified Surge Absorption

No V

Choice of

Two Operational Modes by Automatic Switching:

PRC Mode for Normal Operation

Burst Mode for Stand-By Operation or Light Loads

Built-In Leading Edge Blanking

Low Start-Up Current

Start-Up Circuit Disabled in Operation

Low Operating Current (1.5 mA typ)

Automatic Burst Stand-By (intermittent operation)

Input Power <0.1 W at No Load

The STR-A6131 and STR-A6132 are PRC topology (fixed off-time)

Covering the power range from below 12 watts to 16 watts for a 120

Cycle-by-cycle current limiting, undervoltage lockout with hyster-

Flyback Switching Regulators

DSS

Derating Required

DS(on)

(2.62

FEATURES

or 3.95

120 V/12 or 16 W

AND

maximum)

BENEFITS

AND

— continued

Related parts for str-a6151

str-a6151 Summary of contents

Page 1

... V CC Drain-Source Voltage, V 500 V DSS . . . . . . Drain Switching Current STR-A6131 . . . . . . . . . . . . . . 3.2 A* STR-A6132 . . . . . . . . . . . . . . 4.0 A* Peak Drain Switching Current STR-A6131 . . . . . . . . . . . . . . . 3.2 A STR-A6132 . . . . . . . . . . . . . . . 4.0 A Single-Pulse Avalanche Energy STR-A6131 . . . . . . . . . . . . . . 32 mJ STR-A6132 . . . . . . . . . . . . . . 78 mJ Start-Up-Pin Voltage Range –0 +600 V startup OCP Voltage Range –0 ...

Page 2

... STR-A6131 and STR-A6132 120 V/ Flyback Switching Regulators 2 FUNCTIONAL BLOCK DIAGRAM FEATURES Auto-Bias Function Stable Burst Operation Without Generating Interference Internal Off-Timer Circuit Built-In Constant-Voltage Drive Multiple Protections: Pulse-by-Pulse Overcurrent Protection Overload Protection with Auto Recovery Latching Overvoltage Protection Undervoltage Lockout with Hysteresis ...

Page 3

... V - OLP OLP FB(MAX startup start(leak 34 CC(OVP =34.1 CC CC( =34 STR-A6131 and STR-A6132 120 V/ Ratings Min Typ Max 500 - - - - 300 = 250 16 17 9.6 10.6 11.6 0.2 0.6 - 7.3 8.0 8.7 0.69 0.77 ...

Page 4

... STR-A6131 and STR-A6132 120 V/ Flyback Switching Regulators STR-A6131 Avalanche energy is measured mH 2 MOSFET TYPICAL CHARACTERISTICS = 99 V, Avalanche energy is measured 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 STR-A6132 = mH 2 ...

Page 5

... MOSFET TYPICAL CHARACTERISTICS (cont’d) www.allegromicro.com STR-A6131 and STR-A6132 Flyback Switching Regulators STR-A6131 STR-A6132 120 V/ ...

Page 6

... Application and operation examples described in this publica- tion are given for reference only and Sanken and Allegro assume no responsibility for any infringement of industrial property rights, intellectual property rights, or any other rights of Sanken or Allegro or any third party that may result from its use. ...

Page 7

... STR-A6131 and STR-A6132 Flyback Switching Regulators PACKAGE DIMENSIONS Dimensions in Inches Dimensions in Millimeters (controlling dimensions) Product Weight: Approx. 0.51 g. Frame temperature, T 120 V/ (for reference only measured at the root of pin 3. F EI16EI 7 ...

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