nx9415 Microsemi Corporation, nx9415 Datasheet
nx9415
Related parts for nx9415
nx9415 Summary of contents
Page 1
... The output current can 5A. An internal regulator converts bus voltage to 5V, which provides volt- age supply to internal logic and driver circuit. The NX9415 operates from 200kHz to 2.2MHz and employs loss-less current limiting by sensing the Rdson of synchronous MOSFET followed by hiccup feature ...
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... PACKAGE INFORMATION 5VREG VCC Rev.1.2 12/28/ 150 125 C 24-LEAD PLASTIC MCM PAD2 PAD1 PAD3 NX9415 OCP 14 13 BST 2 ...
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... V _Hyst V Falling in in _UVLO V Rising CC CC _Hyst V Falling CC CC Tss F =2.2MHz S F Rt=4.22k S V RAMP F =2.2MHz S Ib forward current=20mA NX9415 = Followings are bypass Low duty cycle A Min TYP MAX Units 0 4. ...
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... An fixed internal current flows to the external resistor which sets the OCP voltage across the Rdson of the low side MOSFET. Current limit point is this voltage divided by the Rds-on. Not used pin. Connecting these pins to ground is recommended. 4,12,15, PAD3 NC Rev.1.2 12/28/09 PIN DESCRIPTION NX9415 4 ...
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... VIN Regulator VCC 1.25V Bias Generator 0.8V COMP 0.3V RT START 0.8V OSC Digital ramp start Up FB 0.6V CLAMP COMP START GND Figure 2 - Simplified block diagram of the NX9415 Rev.1.2 12/28/09 UVLO POR START OC Control Logic PWM Thermal S Q Shutdown R Hiccup Logic 1.3V CLAMP START NX9415 BST ...
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... Working Frequency=2.2MHz U1 Vin D1 +12V CIN 2*(10uF/16V/X5R) 5VREG C4 4.7uF R1 10 VCC C1 1uF R2 4.22k RT Figure 3- Demo board schematic Rev.1.2 12/28/09 C2 0.1uF BST VIN C3 L1 0.1uF 0.56uH 768 OCP C5 220p FB C6 330p 10p R3 15k COMP GND S2 NX9415 Vout1 +5V,5A COUT 22uF/6.3V/X5R R5 15.8k R6 3.01k 6 ...
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... C2, CIN 7 1 COUT Rev.1.2 12/28/09 Value Manufacturer 1u 0.1u 4.7u/6.3V/X5R 220p 330p 10u/16V/X5R 22u/6.3V/X5R DO1813P-561HC Coilcraft 10 4.22k 15k 768 15.8k 3.01k 5k NX9415CMTR NEXSEM INC. NX9415 7 ...
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... Figure 4 - Output ripple (CH1 SW 10V/DIV, CH2 VOUT AC 50mV/DIV, CH4 OUTPUT CURRENT 5A/DIV) Figure 6 - Over current protection(CH4 OUTPUT CURRENT 5A/DIV) Figure 8 - Output Efficiency @VOUT=5V,VIN=12V Rev.1.2 12/28/09 Figure 5 - Output voltage transient response ( CH2 VOUT AC 50mV/DIV, CH4 OUTPUT CURRENT 5A/DIV) Figure 7 - Startup(CH2 VOUT 2V/DIV, CH4 OUTPUT CURRENT 2A/DIV) NX9415 8 ...
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... RIPPLE ...( OUT where F the compensator. Their locations are shown in figure 10. The transfer function of type III compensator for transconductance amplifier is given by OUT NX9415 o phase shift , o and the gain crossing 0dB with - 1 ...( ...( ...
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... Gain For this type of compensator <F <<F LC ESR Ve power stage loop gain compensator F ESR Figure 11 - Bode plot of Type II compensator NX9415 ... ( ... ( ... ( has to satisfy O < ...
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... The frequency can be set by external Rt resistor. and R selection The relationship between frequency and RT pin is shown as follows. 2500 2000 1500 1000 500 0 3 Figure 15 - Frequency versus Rt resistor NX9415 R DSON +V OCP SW vbus I OCP OCP SW R OCP R OCP DSON NX9415 Frequency Rt(kohm) 11 ...
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... MCM 24 PIN PACKAGE OUTLINE DIMENSIONS NOTE: ALL DIMENSIONS ARE DISPLAYED IN MILLIMETERS. Rev.1.2 12/28/09 NX9415 12 ...