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International Rectifier Electronic Components Datasheet

IR3622MPBF Datasheet

SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER

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Data Sheet No.PD94722 revA
IR3622MPbF
HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP
DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING
Features
Description
Dual Synchronous Controller with 180o
Out of Phase Operation
Configurable to 2-Independent Outputs or Current
Shared Single Output
Output Voltage Tracking
Power up / down Sequencing
The IR3622 IC integrates a dual synchronous
Buck controller, providing a high performance and
flexible solution. The IR3622 can be configured
as 2-independent outputs or as current shared
single output. The current share configuration is
ideal for high current applications.
Current Sharing Using Inductor’s DCR
The IR3622 enables output tracking and
+/-1% Accurate Reference Voltage
sequencing of multiple rails in either ratiometric or
Programmable Switching Frequency up 600kHz
simultaneous fashion. The IR3622 features 180o
Programmable Over Current Protection
out of phase operation which reduces the
Hiccup Current Limit Using MOSFET Rds(on) sensing
Latched Overvoltage Protection
required input/output capacitance and
lower number of capacitors. The
results in
switching
Dual Programmable Soft-Starts
Programmable Enable Input
Pre-Bias Start-up
Dual Power Good Outputs
On Board Regulator
frequency is programmable from 200kHz to
600kHz per phase using one external resistor. In
addition, IR3622 also allows the switching
frequency to be synchronized to an external clock
signal.
External Frequency Synchronization
Other key features offered by this device include
Thermal Protection
32-Lead MLPQ Package
two independent programmable soft starts, two
independent power good outputs, precision
enable input, and under voltage lockout function.
Applications
Embedded Telecom Systems
Distributed Point of Load Power Architectures
Computing Peripheral Voltage Regulators
Graphics Cards
General DC/DC Converters
The current limit is provided by sensing the lower
MOSFET's on-resistance for optimum cost and
performance. The output voltages are monitored
through dedicated pins to protect against open
circuit, and enhance faster response to an
overvoltage event.
Vin
Vo1 Vo1
Vout1
IR3622
Rt HDrv1
Comp1
OCSet1
LDrv1
Comp2
PGnd1
SS1 / SD
SS2 / SD
Seq
Track
HDrv2
OCSet2
LDrv2
Gnd PGnd2
Vin
Vo2 Vo2
Vout1
Ratiometric Powerup
Ratiometric Powerdown
Vout2
Vo1 Vo1
Vo2 Vo2
Simultaneous Powerup Simultaneous Powerdown
www.irf.com
ORDERING INFORMATION
PKG PACKAGE
DESIG DESCRIPTION
M IR3622MPbF
M IR3622MTRPbF
PIN
COUNT
32
32
PARTS
PER TUBE
73
--------
PARTS
PER REEL
-------
3000
T&R
ORIANTAION
Fig A
03/15/07


International Rectifier Electronic Components Datasheet

IR3622MPBF Datasheet

SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER

No Preview Available !

www.DataSheet4U.com
IR3622MPbF
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND)
Vcc, VcL Supply Voltage .....................................… -0.5V to 16V
VcH1,VcH2 ……………………….………….……… -0.5V to 30V
PGood1, PGood2 ………. .…………………………. -0.5V to 16V
HDrv1, HDrv2 ………………………………………… -0.5V to 30V (-2V for 100ns)
LDrv1, LDrv2 ………………………………………… -0.5V to 16V (-2V for 100ns)
Gnd to PGnd ……………………………………….. +/- 0.3V
Storage Temperature Range .................................. -65°C To 150°C
Operating Junction Temperature Range ................ -40°C To 125°C
ESD Classification ………………………………..… JEDEC, JESD22-A114 (1KV)
Moisture Sensitivity Level ………………………….. JEDEC, Level 3 @ 260oC
Caution: Stresses above those listed in “Absolute Maximum Rating” may cause permanent damage to the
device. These are stress ratings only and function of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to “Absolute Maximum Rating”
conditions for extended periods may affect device reliability.
Package Information
32 31 30 29 28 27 26 25
Rt 1
24 PGood2
VSEN2 2
23 Sync
Fb2 3
Comp2 4
SS2/SD2/Mode 5
Pad
22 VSEN1
21 Fb1
20 Comp1
OCSet2 6
19 SS1/SD1
VcH2 7
18 OCSet1
HDrv2 8
17 VcH1
9 10 11 12 13 14 15 16
www.irf.com
*ΘJA = 36o C/W
* ΘJC = 1o C/W
Exposed pad on underside is connected to a copper
pad through vias for 4-layer PCB board design
2


Part Number IR3622MPBF
Description SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER
Maker International Rectifier
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