APU3046 Advanced Power Electronics Corp., APU3046 Datasheet
APU3046
Specifications of APU3046
Related parts for APU3046
APU3046 Summary of contents
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... C5 3. OUT2 R2 C7 PGood Figure 1 - Typical application of APU3046 configured as 2-phase converter with current sharing. PACKAGE ORDER INFORMATION T (° APU3046O Data and specifications subject to change without notice. Technology Licensed from International Rectifier DESCRIPTION The APU3046 IC combines a Dual synchronous Buck ...
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... APU3046 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 (O) TOP VIEW V Gnd REF Vp2 PGood 2 23 Fb2 SEN33 Vcc ...
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... Fb2 to V OS(ERR)2 P2 Freq Rt=Open Rt=Gnd V RAMP Tr C =1500pF =1500pF Fb=1V, Freq=200KHz ON T Fb=1.5V OFF I LDO LDO FB I LDO(BIAS) APU3046 MIN TYP MAX UNITS 0 REF 1 REF 0 REF 1 REF 0 REF 1 REF 4.5 4 ...
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... V REF 25K Vp2 2 25K 3 Fb2 Fb2 Monitor Shut Down 6 Comp2 25K 1.25V 25K Fb3 19 Figure 2 - Block diagram of the APU3046. , VcH1 and VcH2 pins to this pin for noise free operation Bias Generator 1.25V 64uA Max 4.2V / 4.0V POR UVLO 2.5V / 2.3V Vsen33 3.5V / 3.3V VcH1 3.5V / 3.3V VcH2 4 ...
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... During shutdown the MOSFET drivers and the LDO controller turn off. Power Good The APU3046 provides a power good signal. This is an open collector output and it is pulled low if the output voltages are not within the specified threshold. This pin can be left floating if not used ...
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... OUT1 REF R 5 When an external resistor divider is connected to the output as shown in Figure 3. APU3046 Fb1 Figure 3 - Typical application of the APU3046 for programming the output voltage. Equation (1) can be rewritten as OUT1 REF This will result to ...
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... The conduction loss is defined as (Upper Switch COND LOAD DS(ON (Lower Switch COND LOAD DS(ON Temperature Dependency DS(ON) The total conduction loss is defined as (Upper Switch CON(TOTAL) CON CON APU3046 V OUT ; ---(6) ), DSS ). (Lower Switch)q 7/18 ...
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... APU3046 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 the overall thermal budget. Choose IRF7460 for control MOSFET and IRF7457 for synchronous MOSFET ...
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... Using equations (12) and (14) to calculate 2003pF 9 Choose: C ---(11) One more capacitor is sometimes added in parallel with C and R . This introduces one more pole which is mainly 9 4 used to suppress the switching noise. The additional pole is given by APU3046 and F [ (1/5 ~ 1/10 ESR ...
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... APU3046 The pole sets to one half of switching frequency which results in the capacitor C POLE POLE For F << For a general solution for unconditionally stability for any type of output capacitors wide range of ESR values we should implement local feedback with a compensa- tion network ...
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... RC circuit as shown in Figure 8: Ve(s) D( Figure 8 - The PI compensation network The loop gain function is: H(s)=[G( H(s)= Select a zero crossover frequency (F switching frequency 20KHz O2 APU3046 ( OUT = ---(17 OSC ( ) ( ) ---(18 ...
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... OUT2 V = 1.25V REF R = 1KV 10 Results to R =1KV 7 APU3046 Fb3 Figure 9 - Programming the output voltage for LDO. LDO Power MOSFET Selection =1 ---(19) 3V The first step in selecting the power MOSFET for the OSC linear regulator is to select the maximum R on the input to the dropout voltage and the maximum load current ...
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... C7 R2 47uF 22K 2200pF R4 C9 25K 1500pF PGood C10 0.1uF Figure 10 - Typical application for APU3046 configured as two independent controllers. 400 370 340 310 280 250 220 190 0 Figure 11 - Switching frequency per phase vs 33uF C13 V VcH1 VcH2 C L 1uF ...
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... Q1 C6 IRLR2703 47uF R1 1.8V 442 @ 47uF R3 C8 16.2K 3900pF R4 C9 10K 5600pF PGood C10 0.1uF Figure 12 - Typical application for APU3046 configured for DDR memory application. C13 1uF V VcH1 VcH2 CL HDrv1 Vcc 1 BAT54A VccLDO LDrv1 V SEN33 V OUT3 PGnd U1 Fb1 Fb3 APU3046 Rt ...
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... C30 C18 1K 1uF 47uF Rt Sync R16 C24 R13 Comp1 2200pF 15K 29.4K R21 C34 Comp2 6.8nF 16.5K PGood PGood SS C29 0.1uF Figure 13 - Demo-board application of APU3046 33uF 1uH D1 BAT54S C3 C4 47uF 0.1uF C32 47uF C9 1uF HDrv1 IRF7460 D2 BAT54A Q2 LDrv1 ...
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... Resistor 29.4K R21 Resistor 16.5K R5,R19 Resistor 4.7V R8 Resistor 200, 1% R7,10,12 Resistor 1K, 1% R3,R17 Resistor 5mV, 1W, 1% R13 Resistor 15K R6 Resistor 10V Value Qty Part# 2 IRF7460 2 IRF7457 1 IRLR2703 1 APU3046 1 BAT54S 2 BAT54A or 1N4148 2 D03316P-102 1 D05022P-222HC 1 D05022P-332HC 2 ECS-T1CD336R 2 16TPB47M 2 6TPB330M 6 6TPC150M 2 ECJ-2VF1E104Z 1 ECJ-3YB1E105K 1 ECJ-2VB1H222K 1 ECJ-2VB1H682K 2 ECJ-2VC1H471J 6 ECJ-2VF1C105Z 2 ...
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... Ch4: Gate signal for sync FET(slave) (10V/div). Figure 15 - Inductors current matching. Ch1: Gate signal for sync FET(master) (10V/div). Ch2: Gate signal for sync FET(slave) (10V/div). Ch3: Inductor current for master channel (5A/div). Ch4: Inductor current for slave channel (5A/div). V =5V, V =12V, I =10A MASTER SLAVE OUT APU3046 17/18 ...
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... APU3046 WAVEFORMS V =5V IN Vss V OUT Figure 17 - Start- OUT = 10A. Figure 18 - Transient response @ Figure 19 - Transient response for LDO @ 2A. OUT 10A 10A. OUT 18/18 ...
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... ADVANCED POWER ELECTRONICS CORP. Package Outline : TSSOP-24 Part Marking Information & Packing : TSSOP-24 U3046O YWWSSS SYMBOLS θ Part Number Package Code Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Millimeters MIN NOM MAX ...