ip1827 International Rectifier Corp., ip1827 Datasheet

ip1827

Manufacturer Part Number

ip1827

Description

Manufacturer

International Rectifier Corp.

Datasheet

1.IP1827.pdf (39 pages)

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Meier Automation Equipment Co., Limited

Part Number:

IP1827

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FEATURES

BASIC APPLICATION

 Wide input application 1.5V―16V

 Single 3.3V or single 5V application

 Output Voltage Range: 0.6V to 0.75*Vin

 0.5% accurate Reference Voltage

 Programmable Switching Frequency up to 1.5MHz

 Programmable Soft‐Start

 Enable input with Voltage Monitoring Capability

 Remote Sense Amplifier with True Converter

 Thermally compensated Hiccup Mode

 Over‐voltage protection

 Pre‐Bias Start up

 Body Braking to improve transient

 Integrated MOSFET drivers and Bootstrap diode

 Operating temp: ‐40

 Thermal Shut Down

 Power Good Output with Window Comparator

 Small Size 7.7mmx7.7mm LGA

 Pb‐Free (RoHS Compliant)

Voltage Sensing

Over Current Protection

Figure 1 : iP1827 Basic Application Circuit

January 24, 2011 | V1.2

iP1827

C<Tj<125

Highly Integrated 25A Single‐input Voltage,

Synchronous Buck Regulator

DESCRIPTION

The iP1827 iPOWIR

and highly efficient DC/DC regulator. The onboard PWM

controller and MOSFETs make iP1827 a space‐efficient

solution, providing accurate power delivery for low output

voltage and high current applications.

iP1827 is a versatile regulator which offers programmability

of switching frequency and current limit while operating in

wide input and output voltage range.

The switching frequency is programmable from 250kHz to

1.5MHz for an optimum solution.

It also features important protection functions, such as

Pre‐Bias startup, hiccup current limit and thermal

shutdown to give required system level security in the

event of fault conditions.

APPLICATIONS

 Server Application

 Netcom Applications

 Embedded Telecom Systems

 Distributed Point of Load Power Architectures

2.5

Figure 2: iP1827 Efficiency

7.5

is an easy‐to‐use, fully integrated

Vo=1.8V

12.5

Vin=12V

Vcc=3.3V

No Airflow

Includes biasing loss as well as inductor

losses and stray PCB losses

Iout (A)

Vo=3.3V

17.5

iP1827

22.5

97599

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