SC2434EVB SEMTECH [Semtech Corporation], SC2434EVB Datasheet
SC2434EVB
Related parts for SC2434EVB
SC2434EVB Summary of contents
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POWER MANAGEMENT Description The SC2434, a tri-phase, current mode controller is designed to work with Semtech smart synchronous drivers, such as the SC1205, SC1206, and SC1207 to provide the DC/DC converter solution for the most demanding Microprocessor applications. Input current ...
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POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless specified +12V 25° AMB ...
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POWER MANAGEMENT Pin Configuration Top View VID4 VID3 VID2 VID1 VID0 PGIN ERROUT PGOUT FB OSCREF (20-Pin SOIC or TSSOP) Pin Descriptions ...
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POWER MANAGEMENT Block Diagram Applications Information- Output Voltage ...
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POWER MANAGEMENT Applications Information Theory of Operation The simplified voltage regulator (VR) based on SC2434 is depicted in Fig. 1. The key timing chart is also shown in the same picture. The 12V input power passes through the input filter ...
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POWER MANAGEMENT Applications Information (Cont.) Phase Current Balance One of the fundamental challenges for multi-phase solu- tions is to balance the phase currents to achieve the best possible electrical and thermal performance quite easy to use the SC2434 ...
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POWER MANAGEMENT Applications Information (Cont.) Program The Controller Please refer to Fig. 1 and the application schematics in this data sheet for the discussion. The resistor from pin 10 to ground programs the switching frequency. The OSC resistor ...
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POWER MANAGEMENT Applications Information (Cont.) be caused by layout inductances, may alter the PWM comparator trip point. The value of R adjusted to compensate for such parasitic effects. It must be noted that the current amplifier gain is quite precise, ...
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POWER MANAGEMENT Applications Information (Cont.) The compensator transfer function has two poles and one zero drp . ω optimize the transient responses recommended that: · ...
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POWER MANAGEMENT Applications Information (Cont.) PCB Layout Consideration Good layout is necessary for successful implementation of the SC2434 based 3 tri-phase topology. There are few general rules: · Reserve enough PCB space for the power supply (1.2~1.5 square inch for ...
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POWER MANAGEMENT Applications Information (Cont.) Fig Layout concept for input current sensing: (a) use MLC input capacitors; (b) minimize inductance; (c) keep electrical symmetry; and (d) use differential sensing traces. A Reference Design Example For Intel Pentium IV ...
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POWER MANAGEMENT Bill of Materials - Reference Design ...
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POWER MANAGEMENT Bill of Materials - Reference Design (Cont ...
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POWER MANAGEMENT Applications Information (Cont.) Typical Performance Of The Reference Desig The reference design implemented 1.5mOhm output droop impedance as shown in Fig. 9. 1.76 1.74 1.72 1.7 1.68 1.66 1.64 1.62 1.6 Fig Measured output drooping characteristics ...
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POWER MANAGEMENT Applications Information (Cont.) The typical phase node voltage and the output voltage ripple waveform is shown in Fig. 11 under 60A full load operation, where one can see the output ripple is very small and even with a ...
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POWER MANAGEMENT Applications Information (Cont.) The transient response for a maximum load step changes (10A to 60A) is shown in Fig. 14, where one can see that accurate drooping will help to reduce the amount of output capacitance needed. Please ...
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POWER MANAGEMENT Outline Drawing - TSSOP- E/2 PIN 1 INDICATOR ccc N/2 TIPS aaa C SEATING PLANE C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND 3. DIMENSIONS "E1" ...
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POWER MANAGEMENT Outline Drawing - SOIC-20 2X E/2 ccc C 2X N/2 TIPS aaa C SEATING PLANE C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE ...