NX2113A MICROSEMI [Microsemi Corporation], NX2113A Datasheet
NX2113A
Related parts for NX2113A
NX2113A Summary of contents
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... R7 C1 10k 47pF Device Temperature NX2113CMTR NX2113CUTR NX2113ACMTR NX2113ACUTR Rev. 2.0 11/18/05 PROGRAMMABLE BUS UVLO n Synchronous Controller in 10 Pin Package n Bus voltage operation from 2V to 25V n Enable pin allows programmable BUS UVLO n Less than 50 nS adaptive deadband n Internal 300kHz for 2113 and 600kHz for 2113A ...
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ABSOLUTE MAXIMUM RATINGS Vcc to GND & BST to SW voltage ................... 6.5V BST to GND Voltage ...................................... 35V Storage Temperature Range ............................. -65 Operating Junction Temperature Range ............. -40 CAUTION: Stresses above those listed in "ABSOLUTE MAXIMUM RATINGS", may ...
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PARAMETER Oscillator (Rt) Frequency Ramp-Amplitude Voltage Max Duty Cycle Min Duty Cycle Error Amplifiers Transconductance Input Bias Current FB Under Voltage Protection FB Under voltage threshold EN Enable Threshold Voltage Enable Hysterises High Side Driver(CL=3300pF) Output Impedance , Sourcing Current ...
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PIN DESCRIPTIONS PIN # PIN SYMBOL This pin supplies voltage to the high side driver. A high frequency 1 BST ceramic capacitor of 0 must be connected from this pin to SW pin. High side MOSFET gate ...
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BLOCK DIAGRAM 1.25V Bias VCC Generator 0.8V EN 1.25/1.15 START OSC Digital start Up FB COMP START GND Rev. 2.0 11/18/05 POR UVLO START FB 0 NX2113/2113A BST DRVH SW PVCC DRVL 5 ...
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... open 47p open 11k 10k Figure 2 - Demoboard design on NX2113A Rev. 2.0 11/18/05 L2 BUS1 D O 1608C -102 3706 ...
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Bill of Materials Item Quantity 1 6 C1,R3,C8,R10,C23, C2,C20 C9,C14,C24 5 1 C11 6 2 C12,C13 7 1 C15 8 3 R6,C16,C17 9 3 C18,C21,C22 10 1 C19 11 1 C25 12 2 ...
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DEMO BOARD WAVEFORM Figure 3: Output efficiency Figure 5: Output voltage transient response for load curent 0A-9A Figure 7: ENABLE function.(Ch1-enable, Ch2-Ldrv, Ch3-output voltage) Rev. 2.0 11/18/05 NX2113/2113A Figure 4: Voltage ripple @1.6 V output voltage. (Ch2-ripple, Ch3-Hdrv) Figure 6: ...
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... Output voltage OUT I - Output current OUT DV - Output voltage ripple RIPPLE F - Working frequency Inductor current ripple RIPPLE Design Example The following is typical application for NX2113A, the schematic is figure 12V IN V =1.6V OUT I =10A OUT DV <=20mV RIPPLE DV <=80mV @ 10A step ...
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Usually when this type of capacitors are selected, the amount of capacitance per single unit is not sufficient to meet the transient specifi- cation, which ...
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It should be considered that the proposed equa- tion is based on ideal case, in reality, the droop or over- shoot is typically more than the calculation. The equa- tion gives a good start. For more margin, more capaci- tors ...
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F LC 40dB/decade loop gain F ESR 20dB/decade compensator Figure 10 - Bode plot of Type III compensator Design example for type III compensator are in order. Use the same ...
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B. Type II compensator design If the electrolytic capacitors are chosen as power stage output capacitors, usually the Type II compensa- tor can be used to compensate the system. Vout Vref Figure 11 - Type II ...
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Calculate C by setting compensator zero 75% of the LC double pole 10k 0.75 6.5kHz =10.7nF Choose C =10nF Calculate C by ...
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... Soft Start, Enable and shut Down The NX2113 has a digital start up based on digital counter with 1024 cycles. For NX2113 with 300kHz operation, the start up time is about 3.5ms. For NX2113A with 600kHz operation, the start up time is about half of NX2113, 1.75mS. Rev. 2.0 ...
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Before half of the start up time, the Feedback Under Voltage Lock Out comparator is disabled. After half of start up time, the Feedback UVLO comparator is enabled. The FB UVLO threshold is set to be half of voltage ...
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ESR replace the single input capacitor with two parallel 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. In multilayer PCB use ...
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TYPICAL APPLICATION Dual power supply (+5V BIAS,+12V BUS) Vin +12V C4 47uF Vin R5 10 +5V C5 1uF 10nF 100pF R4 10k R2 4.7k 1% Figure 18 -Application of NX2113 for 5V bias ...
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TYPICAL APPLICATION Single Supply 5V Input Vin +5V C4 10uF X7R 1uF Comp C1 R4 4.7pF 120k 330pF R2 20k 1% Figure 20 - Application of NX2113 A for 5V input ...