IRU3046CF IRF [International Rectifier], IRU3046CF Datasheet
IRU3046CF
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IRU3046CF Summary of contents
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... Figure 1 - Typical application of IRU3046 configured as 2-phase converter with current sharing. PACKAGE ORDER INFORMATION T (°C) DEVICE IRU3046CF Rev. 1.9 09/27/02 DESCRIPTION The IRU3046 IC combines a Dual synchronous Buck controller and a linear regulator controller, providing a cost-effective, high performance and flexible solution for multi-output applications. The Dual synchronous con- troller can be configured as 2-independent or 2-phase controller ...
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IRU3046 ABSOLUTE MAXIMUM RATINGS Vcc Supply Voltage .................................................. 25V VccLDO, VcH1, VcH2 and V Supply Voltage ........... CL Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... PACKAGE INFORMATION 24-PIN PLASTIC TSSOP (F) TOP VIEW = 84 ...
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PARAMETER Soft-Start Section Charge Current Power Good Section Fb1 Lower Trip Point Fb1 Upper Trip Point Fb2 Lower Trip Point Fb2 Upper Trip Point Fb3 Lower Trip Point Fb3 Upper Trip Point Power Good Voltage OK Error Amp Section Fb ...
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IRU3046 PIN# PIN SYMBOL PIN DESCRIPTION 10,15 HDrv2, HDrv1 Output driver for the high side power MOSFET. Connect a diode, such as BAT54 or 1N4148, from these pins to ground for the application when the inductor current goes negative (Source/Sink), ...
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THEORY OF OPERATION Introduction The IRU3046 is designed for multi-outputs applications. It includes two synchronous buck controllers and a lin- ear regulator controller. The two synchronous controller operates with fixed frequency voltage mode and can be configured as two independent ...
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IRU3046 APPLICATION INFORMATION Design Example: The following example is a typical application for IRU3046 in current sharing mode. The schematic is Figure 13 on page 15. For Switcher: For Linear Regulator 3.3V IN1(MASTER) IN3 V ...
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For higher efficiency, a low ESR capacitor is recom- mended. For V =5V, choose two Poscap from Sanyo 6TPB330M (6.3V, 330mF, 40mV, 3A) For V =12V, choose two 16TPB47M (16V, 47mF, IN2 70mV, 1.4A). Output Capacitor Selection ...
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IRU3046 The R temperature dependency should be consid- DS(ON) ered for the worst case operation. This is typically given in the MOSFET data sheet. Ensure that the conduction losses and switching losses do not exceed the package ratings or violate ...
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The master error amplifier is a differential-input transcon- ductance amplifier. The output is available for DC gain control or AC phase compensation. The E/A can be compensated with or without the use of local feedback. When operated without local feedback ...
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IRU3046 The pole sets to one half of switching frequency which results in the capacitor C POLE POLE For F << ...
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Place third pole at the half of the switching frequency > 50pF 12 If not, change R selection Place ...
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IRU3046 OUT H(Fo 2p3Fo3L 2 From (18), R can be express as ...
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TYPICAL APPLICATION 12V L1 5V 1uH C1 33uF C3 C4 1uF 1uF C5 1uF 3. IRLR2703 47uF R1 2. 47uF 22K 2200pF R4 C9 25K 1500pF PGood C10 0.1uF Figure ...
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IRU3046 TYPICAL APPLICATION 12V L1 5V 1uH C1 C4 33uF C3 1uF 1uF C5 1uF 3. IRLR2703 47uF R1 1.8V 442 @ 47uF R3 C8 16.2K 3900pF R4 C9 10K 5600pF PGood C10 0.1uF ...
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DEMO-BOARD APPLICATION Dual Input: 5V and 12V to 1.5V @ 16A 5V 12V C7 1uF VCL Vcc C8 1uF VccLDO 3.3V VSEN33 C13 VOUT3 47uF Q3 IRLR2703 2.5V Fb3 IRU3046 @ R10 C30 C18 ...
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IRU3046 DEMO-BOARD APPLICATION Application Parts List Ref Desig Description Q1,Q4 MOSFET 20V, 10mV, 12A Q2,Q5 MOSFET 20V, 7mV, 15A Q3 MOSFET 30V, 0.045V, 23A U1 Controller Synchronous PWM D1 Diode Fast Switching D2,D4 Diode Fast Switching L1,L2 Inductor 1mH, 6.8A ...
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WAVEFORMS Figure 14 - Gate signals vs. inductor currents. Ch1: Gate signal for control FET(master) (10V/div). Ch2: Gate signal for control FET(slave) (20V/div). Ch3: Inductor current for master channel (5A/div). Ch4: Inductor current for slave channel (5A/div). V =5V, V ...
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IRU3046 WAVEFORMS V =5V IN Vss V OUT Figure 17 - Start- OUT IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 18 = 10A. Figure 18 - Transient response @ I 2A ...
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A 1.0 DIA E PIN NUMBER NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. Rev. 1.9 09/27/02 (F) TSSOP Package 24-Pin 24-PIN SYMBOL MIN NOM MAX DESIG 0.65 BSC A 4.30 4.40 4.50 ...
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IRU3046 PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION F TSSOP Plastic IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 20 PIN PARTS COUNT PER TUBE Feed Direction Figure A ...