IR3624MPBF International Rectifier, IR3624MPBF Datasheet
IR3624MPBF
Specifications of IR3624MPBF
Related parts for IR3624MPBF
IR3624MPBF Summary of contents
Page 1
... Pre-Bias startup, hiccup current limit and thermal shutdown are provided to give required system level security in the event of fault conditions. Vc HDrv OCSet U1 LDrv PGnd Fb Gnd Fig. 1: Typical application Circuit ORDERING INFORMATION PIN PARTS PARTS COUNT PER TUBE PER REEL 10 121 ------- 10 -------- 3000 IR3624MPBF Vout T&R ORIANTAION Figure A ...
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... Package Information V CC LDrv PGnd HDrv V *Exposed pad on underside is connected to a copper pad through vias for 4-layer PCB board design OCSet 10 1 SS/ Exposed Pad Gnd 8 3 Comp 10-Lead MLPD, 3x3mm o Θ C Θ = 2.1 C/W JC IR3624MPBF ...
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... Vcc 3V 3V 20uA 40uA 3uA OCP POR 0.6V Error Amp Fb Comp Gnd Fig. 2: Simplified block diagram of the IR3624 3V Bias Generator 0.6V Thermal Shutdown UVLO POR Vc PWM Comp 0.3V Oscillator Set Ramp SS POR OCP IR3624MPBF Vc HDrv Vcc LDrv R PGnd Q PBias S OCSet 20uA 3 ...
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... Connect an external capacitor from this pin to ground to set the start up time of the output voltage. The converter can be shutdown by pulling this pin below 0.3V. 10 OCSet Current limit set point. A resistor from this pin to drain of low side MOSFET will set the current limit threshold. IR3624MPBF Description 4 ...
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... LOAD Supply ramping up Supply ramping down Supply ramping up and down Supply ramping up Supply ramping down Supply ramping up and down S Note2 Fb=1V min F =600kHz, Note2 s F =600kHz, Fb=0.5V max s IR3624MPBF Units V V kHz C<T < 105 C j Min TYP MAX Units 0.6 V -1.5 +1 ...
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... I Note2 Hiccup SS Note2 135 Note2 CL=1.5nF, F =600kHz s See Fig 3 CL=1.5nF, F =600kHz s See Fig 3 CL=1.5nF, F =600kHz s See Fig 3 CL=1.5nF, F =600kHz s See Fig 3 See Fig Deadband L_to_H IR3624MPBF TYP MAX Units µA -0.1 -0.5 µ µmho 1300 1600 µ 0.25 V µ µ ...
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... Tem p ['C] IOCSET (uA) -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -40 -30 -20 - 100 110 120 Tem p ['C] IR3624MPBF ISS (mA) -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -40 -30 -20 - 100 110 120 Tem p ['C] Icq(mA) 6 5.5 5 4.5 4 3.5 3 -40 -30 -20 - ...
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... MOSFET is generated. Figure 4 shows a typical Pre-Bias condition at start up. Depends on system amount of output capacitors may be required to prevent discharging the output voltage. Volt Pre-Bias Voltage (Output Voltage before startup When IR3624MPBF prevents oscillation and configuration, specific Vo Time Fig. 4: Pre-Bias start up 8 ...
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... POR Comp 0.6V Fb Fig. 5: Soft-Start circuit for IR3624 Output of UVLO Soft-Start Current flowing into Fb pin Voltage at negative input of Error Amp voltage Voltage at Fb pin Fig. 6: Theoretical operation waveforms IR3624MPBF 3V 40uA Error Amp 24K 24K POR 3V ≅ 2V ≅ Voltage 40uA 0uA ≅ 0.96V ...
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... Ch1: Inductor point, Ch2:Ldrv, Ch3:OCSet The value of R circuit to ensure that the over current protection circuit activates as expected. The IR3624 current limit is designed primarily as disaster preventing, "no blow up" circuit, and doesn't operate as a precision current regulator. IR3624MPBF 28uA OCP 20uA 20 3uA Deadtime ...
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... MOSFET is switched on. For low voltage application, schottky diodes can be used to minimize forward drop across the diodes at start up. and R see IR3624 8 9 Fig. 11: Charge pump circuit to generate IR3624MPBF µ ≅ --( ) 1 SS ...
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... ECJ2FB0J226M (22uF, 6.3V, X5R and EIA 0805 case size good choice. In the case of tantalum or low ESR electrolytic capacitors, the ESR dominates the output voltage ripple, equation (9) can be used to calculate the required ESR for the specific voltage ripple. IR3624MPBF ) , then the output inductor will be: are other ∆ ∆ + ...
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... D) 10 (ON) d Fig. 12: switching time waveforms From IRF8910 data sheet 10ns tf = 4.1ns These values are taken under a certain condition test. For more details please refer to the IRF8910 data sheet. =0.724W By using equation (10), we can calculate the switching losses. P IR3624MPBF + off ) * (10) load ...
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... R 3 Where Maximum Input Voltage Oscillator Ramp Voltage osc F = Crossover Frequency Zero Frequency of the Output Capacitor ESR F = Resonant Frequency of the Output Filter LC R and R = Feedback Resistor Dividers Error Amplifier Transconductance m IR3624MPBF (12) ∗ π ESR * C o Comp E POLE R 3 Frequency F Z ⎞ ...
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... The compensation network has three poles and two zeros and they are expressed as follows π π (17) π π Cross over frequency is expressed as ⎤ ⎞ ⎟ ⎟ + ⎥ ⎠ ⎦ IR3624MPBF OUT E Comp 9 V REF Frequency ≅ π ⎛ ⎞ ⎜ ⎜ ⎟ ⎟ ⎝ ⎠ ≅ ...
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... Select : ≥ ≥ Calculate π π π Select : Calculate π π ref * − ref IR3624MPBF one-tenth of the o for π Θ = max 3 Θ Θ Θ Θ and F 0 Ω Ω Select : and 3.96nF, Select : C 3.9nF 106 pF , Select : C 100 osc ; and Ω ...
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... PC board layout at a single point. The MLPD is thermal enhanced package, based on thermal performance it is recommended to use 4-layers PCB. To effectively remove heat from the device the exposed pad should be connected to ground plane using vias. IR3624MPBF components such as 17 ...
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... IR3624 0.1uF Gnd Comp Fig.16: Application circuit for 13.2V to 1.8V Using ceramic output capacitor with typeIII compensation D1 BAT54 10uF 0.1uF ceramic HDrv R7 OCSet 9K Q1 LDrv IRF8910 PGnd 3.9nF C3 100pF IR3624MPBF C6 0.1uF 0.82uH 1.8V L1 C11,C12 2x22uF Ceramic R10 R8 2K 28K C7 330pF R9 14K 18 ...
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... Vin=13.2V, Vo=1.8V, Io=0-6A, Fs=600 kHz, Room Temperature, No Air Flow Fig.17: Start Load Fig.19: Output Voltage Ripple at 6A load :Inductor Point ( Fig.21: Transient Response Ch4:I (0-3A step Fig.18: Pre-Bias Start up Fig.20: Gate signals at 6A load ) x Fig.22: Shorted Output, Hiccup Condition IR3624MPBF :HDrv, Ch :Lx, Ch :LDrv ...
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... TYPICAL OPERATING WAVEFORMS Vin=13.2V, Vo=1.8V, Io=0-6A, Fs=600 kHz, Room Temperature, No Air Flow Fig.23: Bode Plot at 10%of load shows a bandwidth of 70kHz and phase margin of 62 degree Fig.24: Efficiency at room temperature, no air flow IR3624, 600 kHz 12V to 1. Io(A) IR3624MPBF Series1 ...
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... PITCH Figure A 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 02/01 IR3624MPBF VEED-5 INCHES MAX MIN NOM MAX 1.00 .032 .035 .039 0.05 .000 ...