APU3048 Advanced Power Electronics Corp., APU3048 Datasheet
APU3048
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APU3048 Summary of contents
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... Q1 3. OUT3 Figure 1 - Typical application of APU3048 configured as 2-independent converter. PACKAGE ORDER INFORMATION T (° Data and specifications subject to change without notice. Technology Licensed from International Rectifier DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER DESCRIPTION The APU3048 IC combines a Dual synchronous Buck ...
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... APU3048 ABSOLUTE MAXIMUM RATINGS Vcc Supply Voltage .................................................. 25V VcH1=VcH2 Supply Voltage ...................................... Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... PACKAGE INFORMATION 16-PIN PLASTIC TSSOP (O) TOP VIEW Gnd 1 16 Fb1 Fb2 Comp1 Fb3 3 14 Comp2 OUT3 VcH2 VcH1 ...
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... FB1 I SS=0V FB2 Freq V RAMP Tr C =1500pF =1500pF Fb=1V, Freq=200KHz ON T Fb=1.5V OFF I LDO V LDO FB I LDO(BIAS) APU3048 MIN TYP MAX UNITS mA -0.1 mA -64 mmho 400 mmho 600 180 200 220 KHz 1. 100 ns 50 100 ns 50 150 250 ...
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... PWM Comp1 Reset Dom Ramp1 Set1 Two Phase Oscillator Ramp2 Set2 S PWM Comp2 Q R Reset Dom 0. Vcc Figure 2 - Block diagram of the APU3048 1.25V > HDrv1 LDrv1 HDrv2 ...
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... PWM sig- nals increase from zero to the point the feedback loop takes control. Out of Phase Operation The APU3048 drives its two output stages 1808 out of APPLICATION INFORMATION Design Example: The following example is a typical application for APU3048 in current sharing mode ...
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... APU3048 If the high value feedback resistors are used, the input bias current of the Fb pin could cause a slight increase in output voltage. The output voltage set point can be more accurate by using precision resistor. Soft-Start Programming The soft-start timing can be programmed by selecting the soft start capacitance value. The start up time of the ...
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... These values are taken under a certain condition test. For more detail please refer to the AP9408AGH data sheet. By using equation (6), we can calculate the switching losses 52.8mW SW1 P = 22mW SW2 APU3048 ---(6) LOAD (OFF) ...
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... APU3048 Feedback Compensation The APU3048 is a voltage mode controller; the control loop is a single voltage feedback path including error amplifier and error comparator. To achieve fast transient response and accurate output regulation, a compensa- tion circuit is necessary. The goal of the compensation network is to provide a closed loop transfer function with the highest 0dB crossing frequency and adequate phase margin (greater than 458) ...
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... The compensation network has three poles and two ze- ros and they are expressed as follows 2p3R 2p3R 2p3C APU3048 V OUT E/A R Comp 5 V REF Frequency ...
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... APU3048 Cross Over Frequency 2p3Lo3Co OSC Where Maximum Input Voltage Oscillator Ramp Voltage OSC Lo = Output Inductor Co = Total Output Capacitors The stability requirement will be satisfied by placing the poles and zeros of the compensation network according to following design rules. The consideration has been taken to satisfy condition 14 regarding transconduc- tance error amplifier ...
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... SS C24 0.1uF Figure 8 - Typical application of APU3048 in an on-board DC-DC converter directly to the drain of the high-side MOSFET, to reduce the ESR replace the single input capacitor with two par- allel units. The feedback part of the system should be kept away from the inductor and other noise sources, and be placed close to the IC ...
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... R5 Fb3 C14 C15 1K 1uF 47uF R9 C18 1800pF 46.4K R11 C19 1800pF 39.2K SS C24 0.1uF Figure 9 - Demo-board application of APU3048 33uF 1uF AP9408AGH HDrv1 V 2.15 1N4148 Q3 R3 LDrv1 AP9412AGH V 2. Fb1 U1 APU3048 ...
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... BAT54S 2 ELL6SH1R0M 1 ELLATV6R8M 1 ETQP6F102HFA 7 ECJ-2VF1C105Z 2 ECS-T1CD336R 2 ECJ-2VF1E104Z 1 ECJ-3YB1E105K 2 ECS-T1AD476R 2 ECJ-2VC1H471J 2 ECJ-2VB1H182K 1 16TPB47M 5 6TPC150M APU3048 Manuf Web site (www.) APEC a-power.com.tw APEC APEC APEC IR Panasonic maco.panasonic.co.jp Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Sanyo sanyo.com/industrial Sanyo 13 ...
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... APU3048 WAVEFORMS 2A 0A Figure 4 - Transient response @ I for 3.3V output. Figure 6 - Transient response @ I for 2.5V output Figure 5 - Transient response @ I OUT = Figure 7 - Output voltage ripple for 3.3V @ 4A. OUT OUT for 1.8V output. 14 ...
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... Ch1: Output current 2A/div. Ch2: Gate signal for control FET 20V/div. Ch3: Gate signal for sync FET 10V/div. Figure 11 - Gate signals for 1.8V output. Ch1: Output current 2A/div. Ch2: Gate signal for control FET 10V/div. Ch3: Gate signal for sync FET 10V/div. APU3048 15 ...
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... ADVANCED POWER ELECTRONICS CORP. Package Outline : SOP-16 Part Marking Information & Packing : SOP-16 U3048M YWWSSS SYMBOLS 1.All Dimensions Are in Millimeters. 2.Dimension Does Not Include Mold Protrusions. Part Number Package Code Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Millimeters ...
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... ADVANCED POWER ELECTRONICS CORP. Package Outline : TSSOP-16 Part Marking Information & Packing : TSSOP-16 U3048O YWWSSS Part Number Package Code Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Millimeters SYMBOLS MIN NOM MAX 1.05 1.10 A 1.20 0.10 A1 0.05 0.15 __ 1.05 A2 1.00 0.25 b 0.20 0. 4.90 5.08 5.10 6.20 6.60 E 6.40 E1 4.30 4.40 4. 0.65 L ...