Datasheet > IPC21I-SO-G-LF-TR

IPC21I-SO-G-LF-TR

更新时间： 2024-09-20 12:21:59

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
12页	94K
描述
Precision Feedback Controllers Fixed and PTAT references

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Power Management IPS20 and IPS21

IN-PLUG^®series: IPS20 and IPS21

Precision Feedback Controllers

Fixed and PTAT references

REV5

INTRODUCTION

DESCRIPTION

FEATURES

•

Dual precision regulators for SMPS voltage and

current control

IN-PLUG^®IPS20 & IPS21 Integrated Circuits are

low-voltage current sensing feedback controllers used

in Switch Mode Power Supplies to control load-side

current and voltage. They have been designed to limit

the power dissipated in the sensing circuitry for high

output current applications that require current

limiting. They also provide excellent loop stability

and superb transient response. They both incorporate a

4V shunt regulator for maximum flexibility to power

the chip.

•

Output currents up to 50A

Output voltage down to 1.2V

54mV or 100mV current sensing voltage

1.19V voltage reference

Operates with grounded optocoupler

4V shunt regulator for VCC supply

APPLICATIONS

•

Fast chargers for power tools and other

applications

The IPS20 and IPS21 only differ by the characteristics

of the current sensing references.

•

Battery eliminators

Industrial and bench-type power supplies

Distributed power systems

The IPS20 incorporates a trimmed 54mV reference

with a positive temperature coefficient which closely

matches that of a PCB copper trace. This copper trace

sensing method can be used inexpensively with very

low associated power losses.

PIN CONFIGURATION: DIP-8 / SOIC-8

The IPS21 incorporates a temperature compensated

100mV reference for more conventional resistors.

Both controllers feature the same voltage regulator

section with a trimmed temperature stable voltage

reference of 1.19V. This allows the output voltage of

the SMPS to be set to any value down to about 1.2V.

VCC

GND

OUT (-)

IPS20

IPS21

VCOMP

OPTO

ICOMP

The IPS20 and IPS21 are suitable for any SMPS and

any make of SMPS controllers, including flyback,

forward, PFC and DC/DC solutions.

These flyback controllers work best in complement

with the IN-PLUG^®family of IPS1x flyback

controllers, IPS10x PFC controllers and IPS20x Push-

Pull controllers.

ORDERING INFORMATION

For part number, packaging, and ordering

information, please refer to the second-to-last page of

this datasheet.

AADS00001/AA743

- Revision 5– Dec 2008

1 / 12

12 3 4 5 6 7...12

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