iru3039 International Rectifier Corp., iru3039 Datasheet
iru3039
Related parts for iru3039
iru3039 Summary of contents
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... MLPQ 5x5 (H) SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION DESCRIPTION The IRU3039 controller IC is designed to provide a syn- chronous Buck regulator and is targeted for applications where the cost and size is critical. The IRU3039 oper- ates with a single input supply up to 18V. The output voltage can be programmed as low as 0 ...
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... IRU3039(PbF) ABSOLUTE MAXIMUM RATINGS Vcc Supply Voltage .................................................. -0.5V To 25V Vc Supply Voltage .................................................... -0.5V To 25V Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. PACKAGE INFORMATION 20-Pin MLPQ 5x5 (H) 20 ...
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... LOAD =1500pF (LO) LOAD Tf C =1500pF (HI) LOAD T HDrv going Hi or Low DB D Fb=0.6V, Freq=200KHz MAX D Fb=1.0V MIN V Vcc=12V OUT2 I OUT2 I OCSET OC(OFFSET) www.irf.com IRU3039(PbF) MIN TYP MAX UNITS -1 +0.08 +1 µ µA 700 µmho 0.8 1 µA 200 KHz 400 1. 100 ns 40 ...
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... Vc 22uA 3. 64uA Max 17 POR Error Amp 25K 25K Fb 19 Comp 18 3V 28uA OC Comp 16 OCSet Figure 2 - Simplified block diagram of the IRU3039. 4 Regulator 6V 3V Bias Generator 1.25V 0.2V POR 0.2V Rt Oscillator Ct Enbl S Q Error Comp R Reset Dom FbLo Comp 0.4V POR www.irf.com of the power MOSFET. ...
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... THEORY OF OPERATION Introduction The IRU3039 is a fixed frequency, voltage mode syn- chronous controller and consists of a precision refer- ence voltage, an uncommitted error amplifier, an internal oscillator, a PWM comparator, an internal regulator, a comparator for current limit, gate drivers, soft-start and shutdown circuits (see Block Diagram). ...
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... SET L(CRITICAL) If the over-current condition is temporary and goes away quickly, the IRU3039 will resume its normal operation. If output is shorted or over-current condition persists, the output voltage will keep going down until it is below 0.4V. Then the output under-voltage lock out comparator goes high and turns off both MOSFETs. The operation waveforms are shown in Figure 6 ...
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... The cycle-by-cycle over-current limit will hold for a cer- tain amount of time, until the output voltage drops below 0.4V, the under-voltage lock out activates and latches off the output driver. The operation waveform is shown in Figure 7. Normal operation will resume after IRU3039 is powered up again. www.irf.com IRU3039(PbF) ∆ ...
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... OUT 0.8V P REF When an external resistor divider is connected to the output as shown in Figure 8. IRU3039 V Fb REF V P Figure 8 - Typical application of the IRU3039 for programming the output voltage. Equation (7) can be rewritten as OUT × Choose This will result ...
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... The capacitor value must be high enough to absorb the inductor's ripple current. The larger the value of capaci- tor, the lower will be the output ripple voltage. Power MOSFET Selection The IRU3039 uses two N-Channel MOSFETs. The se- lections criteria to meet power transfer requirements is based on maximum drain-source voltage (V source drive voltage (V ...
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... This results to 5.76KΩ SET Feedback Compensation The IRU3039 is a voltage mode controller; the control loop is a single voltage feedback path including error amplifier and error comparator. To achieve fast transient ---(12) response and accurate output regulation, a compensa- tion circuit is necessary. The goal of the compensation ...
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... The IRU3039’s error amplifier is a differential-input transconductance 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, the transconductance properties of the E/A become evi- dent and can be used to cancel one of the output filter poles ...
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... IRU3039(PbF) For a general solution for unconditionally stability for ceramic capacitor with very low ESR and any type of output capacitors wide range of ESR values we should implement local feedback with a compensation network. The typically used compensation network for voltage-mode controller is shown in Figure 13. ...
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... The goal is to localize the high cur- rent path to a separate loop that does not interfere with the more sensitive analog control function. These two grounds must be connected together on the PC board layout at a single point. 100 150 200 250 300 Rt (KΩ) www.irf.com IRU3039(PbF) 350 400 450 13 ...
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... TYPICAL APPLICATION C3 1uF Vcc 0.1uF IRU3039 OCSet REF Rt V Comp C8 2200pF Gnd PGnd R1 28K Figure 15 - Typical application of the IRU3039 with two input supplies. 14 +12V C4 C2 1uF 2x 150uF Q1 HDrv IRF7457 D1 R2 7.12K Q2 LDrv IRF7457 OUT2 R3 Fb 2.15K R4 1K www.irf.com 5V ...
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... U2 V HDrv P IRU3038 C12 LDrv 0.15uF PGnd Rt Comp C14 Fb 5.6nF Gnd R6 13K Figure 16 - Typical application of IRU3039 for DDR memory when IRU3039 generates V 12V C2 C3 1uF 2x 100uF, 55m Ω 10TPB100M Q1 1/2 of IRF7313 D1 R7 4.7uH 8K Q1 1/2 of IRF7313 R1 1.25K R3 1K 12V C10 ...
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... HDrv IRU3039 0.1uF OCSet V P C10 V REF 0.1uF Rt Comp C7 5600pF Gnd PGnd R7 14K Figure 17 - Demo-board application of the IRU3039. PARTS LIST Ref Desig Description Q1 MOSFET 30V, 12.5mΩ, 11A Q2 MOSFET 30V, 8mΩ, 14A U1 Controller Synchronous PWM D1 Schottky Diode Fast Switching Fast Switching D2 Schottky Diode ...
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... Figure 18 - Normal condition at No Load. Ch1: HDrv, Ch2: LDrv, Ch4: Inductor Current Figure 19 - Soft-Start pin grounded. Ch1: HDrv, Ch2: LDrv Figure 20 - Soft-Start. Ch1 Ch2 Ch3 OUT Figure 21 - Output Ripple. Ch1: Output Ripple, Ch2: HDrv, Ch3: LDrv, Ch4: Inductor Current www.irf.com IRU3039(PbF) , Ch4: Vss OUT2 17 ...
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... IRU3039(PbF) TYPICAL OPERATING CHARACTERISTICS Test Conditions: V =20V, V =3.3V, I =0-8A, Fs=200KHz IN OUT OUT Figure 22 - Output shorted at start up. Ch1 Ch3: Vss, Ch4: Inductor Current OUT Figure 23 - Load Transient Response Ch1 Output Current (A) Figure 24 - Efficiency Measurement. ...
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... Figure 29 - Frequency vs.Temperature 200 150 100 12 Volts 20 Volts 24 Volts 130 -45 -10 Figure 30 - Deadtime, Sync FET Drive Rising Time vs.Temperature F S www.irf.com IRU3039(PbF) 12 Volt 20 Volt 24 Volt Temperature (C) vs.Temperature OUT2 12 Volt 20 Volt 24 Volt 130 Temperature (C) F =400KHz S 12 Volts ...
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... IRU3039(PbF) TYPICAL PERFORMANCE CHARACTERISTICS For all charts: VC=VCC=12V, 20V, 24V Note: Data are taken with few samples to indicate the variation of these parameters over the wide temperature range. 200 180 160 140 120 100 -45 - Temperature (C) Figure 31 - Control FET Drive Rise Time vs.Temp. ...
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... A The identifier may be molded, or marked A3 features. Note 2: The identifier and the exposed pad are electronically connected. 20-PIN 5x5 MIN NOM MAX 0.80 0.90 1.00 0.00 0.02 0.05 0.20 REF 0.23 0.30 0.38 5.00 BSC 3.00 3.15 3.25 5.00 BSC 3.00 3.15 3.25 0.65 BSC 0.45 0.55 0.65 0.115 --- --- ARE IN MILLIMETERS. www.irf.com IRU3039(PbF) EXPOSED PAD IDENTIFIER PIN NUMBER ...
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... IRU3039(PbF) PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION H MLPQ 5x5 IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 22 PIN PARTS COUNT PER TUBE 20 --- Feed Direction Figure A - Live Bug Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice ...