Rainbow-electronics MAX15034 User Manual

General DescriptionThe MAX15034 two-phase, configurable single- or dual-output buck controller has an input voltage range of4.75V to 5.5V or 5V to 28V

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MAX15034Two enable comparators (CEN1 and CEN2) are avail-able to control and sequence the two PWM sectionsthrough the enable (EN1 or EN2) inputs. An o

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MAX15034Configurable, Single-/Dual-Output, SynchronousBuck Controller for High-Current Applications___________________________________________________

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MAX15034MOSFET Gate Drivers (DH_, DL_)The high-side drivers (DH1 and DH2) and low-side dri-vers (DL1 and DL2) drive the gates of external n-channelMOS

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MAX15034RT24.9kΩR860.4kΩR54.75kΩR45.11kΩC6680μF1.3V/20AR12mΩL10.8μHQ1IRF7832Q2IRF7821C80.1μFD1(100mA, 30V)C21μFQ4IRF7821D2(100mA, 30V)C30.1μFC44.7μFR3

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MAX15034ripple current. A low-ESR input capacitor that can han-dle the maximum input RMS ripple current of one chan-nel must be used. The maximum RMS

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MAX15034Set the RC time constant to be 1.1 to 1.2 times theinductor time constant (L/DCR). Select C1 to be in the0.1μF to 0.47μF range, and then calcu

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MAX15034Reverse Current LimitThe MAX15034 limits the reverse current when the out-put capacitor voltage is higher than the preset outputvoltage. Calcu

MAX15034In practical applications, pick the crossover frequency(fC) in the range of:First calculate RCFin equation 2 above. Calculate CCFso that:where

MAX15034Configurable, Single-/Dual-Output, SynchronousBuck Controller for High-Current ApplicationsMaxim cannot assume responsibility for use of any c

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MAX15034Configurable, Single-/Dual-Output, SynchronousBuck Controller for High-Current ApplicationsOSCILLATOR FREQUENCY vs. RTMAX15034 toc01RT (kΩ)OSC

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MAX15034Configurable, Single-/Dual-Output, SynchronousBuck Controller for High-Current ApplicationsTURN-ON/TURN-OFF WAVEFORMMAX15034 toc151ms/divVOUT1

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MAX15034Configurable, Single-/Dual-Output, SynchronousBuck Controller for High-Current Applications___________________________________________________