NX2116A MICROSEMI [Microsemi Corporation], NX2116A Datasheet
NX2116A
Related parts for NX2116A
NX2116A Summary of contents
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... These prod- ucts operate at fixed internal frequency of 300kHz, ex- cept that NX2116A operates at 600kHz and 2116B at 1MHz frequency. These products employ loss-less cur- rent limiting protection by sensing the Rdson of syn- chronous MOSFET followed by latch out feature ...
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ABSOLUTE MAXIMUM RATINGS VCC to GND & BST to SW voltage .................... -0.3V to 6.5V BST to GND Voltage ........................................ -0.3V to 35V SW to GND ...................................................... -2V to 35V All other pins .................................................... -0.3V to VCC+0.3V or 6.5V Storage ...
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... Rev. 3.0 03/14/06 NX2116/2116A/2116B/2117/2117A SYM Test Condition _UVLO V Rising _Hyst V Falling 2116, 2117 S 2116A,2117A 2116B V RAMP Ib Tss NX2116,NX2117 NX2116A, NX2117A NX2116B (Hdrv) I=200mA source (Hdrv) I=200mA sink V -V =4.5V BST =4.5V BST SW Ldrv going Low to Hdrv going H) High, 10%-10% (Ldrv) I=200mA source R (Ldrv) ...
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PIN DESCRIPTIONS PIN SYMBOL Power supply voltage. A high freq 1uF ceramic capacitor is placed as close as possible to and connected to this pin and ground pin. The maximum rating of this pin is 5V. VCC This pin supplies ...
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BLOCK DIAGRAM VCC 1.25V Bias Generator 0.8V EN 1.25/1.15 START 0.8V OSC Digital ramp start Up FB COMP START GND Figure 2 - Simplified block diagram of the NX2116 Rev. 3.0 03/14/06 NX2116/2116A/2116B/2117/2117A FB 0.6V UVLO POR START OC PWM ...
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... Input voltage 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 NX2116A, the schematic is figure 12V IN V =1.8V OUT F =600kHz S I =9A OUT DV <=20mV RIPPLE DV < ...
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Usually when this type of capacitors are selected, the amount of capaci- tance per single unit is not sufficient to meet the tran- sient ...
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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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Case 1: F <F < ESR power stage F LC 40dB/decade loop gain F ESR 20dB/decade compensator Figure 4 - Bode plot of Type III compensator Design example for type ...
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Case 2: F <F <F LC ESR O power stage F LC 40dB/decade F ESR loop gain 20dB/decade compensator Figure 5 - Bode plot of Type III compensator (F <F <F ) ...
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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. Type II compensator can be realized by simple RC circuit without ...
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R value by the following equation OSC ESR m 1.5V 2 60kHz 1uH = 12V 6.5m 1.8V 0.8V =8.15k Choose R =8. Calculate ...
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HCON OUT DS(ON LCON OUT DS(ON TOTAL HCON LCON where the R will increases as MOSFET junc- DS(ON) tion temperature increases dependency. ...
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I OCP 40uA OCP R OCP comparator Figure 10 - Over current protection The over current limit can be set by the following equation I R OCP OCP I SET K R DSON If MOSFET R =6.5m , the worst ...