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IRDC3898

Description
Power Management IC Development Tools Design Kit POL IC
CategoryDevelopment board/suite/development tools   
File Size3MB,46 Pages
ManufacturerInfineon
Websitehttp://www.infineon.com/
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IRDC3898 Overview

Power Management IC Development Tools Design Kit POL IC

IRDC3898 Parametric

Parameter NameAttribute value
Product CategoryPower Management IC Development Tools
ManufacturerInfineon
RoHSNo
ProductEvaluation Boards
TypeVoltage Regulators - Switching Regulators
Tool Is For Evaluation OfIR3898
Input Voltage12 V
Output Voltage1.2 V
PackagingBulk
Factory Pack Quantity1
PD-97662
6A Highly Integrated SupIRBuck
TM
Single-Input Voltage, Synchronous Buck Regulator
-1-
IR3898
FEATURES
Single 5V to 21V application
Wide Input Voltage Range from 1.0V to 21V with
external Vcc
Output Voltage Range: 0.5V to 0.86× Vin
Enhanced Line/Load Regulation with Feed-Forward
Programmable Switching Frequency up to 1.5MHz
Internal Digital Soft-Start/Soft-Stop
Enable input with Voltage Monitoring Capability
Thermally Compensated Current Limit with robust
hiccup mode over current protection
Smart Internal LDO to improve light load and full load
efficiency
External Synchronization with Smooth Clocking
Enhanced Pre-Bias Start-Up
Precision Reference Voltage (0.5V+/-0.5%) with
margining capability
Vp for Tracking Applications (Source/Sink Capability
+/-6A)
Integrated MOSFET drivers and Bootstrap Diode
Thermal Shut Down
Programmable Power Good Output with tracking
capability
Monotonic Start-Up
Operating temp: -40 C < Tj < 125 C
o
o
DESCRIPTION
The IR3898 SupIRBuck
TM
is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard PWM controller and MOSFETs make
IR3898 a space-efficient solution, providing accurate
power delivery.
IR3898 is a versatile regulator which offers
programmable switching frequency and the fixed
internal current limit while operates in wide input and
output voltage range.
The switching frequency is programmable from 300kHz
to 1.5MHz for an optimum solution.
It also features important protection functions, such as
Pre-Bias startup, thermally compensated current limit,
over voltage protection and thermal shutdown to give
required system level security in the event of fault
conditions.
APPLICATIONS
Netcom Applications
Embedded Telecom Systems
Server Applications
Storage Applications
Distributed Point of Load Power Architectures
Small Size: 4mm x 5mm PQFN
Lead-free, Halogen-free and RoHS Compliant
BASIC APPLICATION
5V <Vin<21V
Efficiency (%)
98
96
94
92
Vref S_Ctrl Vin PVin Boot
Vcc/
SW
LDO_out
PGood
PGood
Vp
Vp
Rt/Sync
Enable
Gnd
Fb
Vsns
90
88
86
84
82
80
78
12Vin,Internal bias,Frequency 600KHz
Vo
IR3898
Comp
PGnd
0.6
1.2
1.8
2.4
3
3.6
4.2
4.8
5.4
6
Load Current (A)
1.2Vout
3.3Vout
Figure 1: IR3898 Basic Application Circuit
Figure 2:IR3898 Efficiency
1
JANURARY 18, 2013 | DATA SHEET | Rev 3.5
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