MAX15002ATL+ Maxim Integrated Products, MAX15002ATL+ Datasheet
MAX15002ATL+
Specifications of MAX15002ATL+
Related parts for MAX15002ATL+
MAX15002ATL+ Summary of contents
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... RESET Output with a Programmable Timeout Period o 200kHz to 2.2MHz Programmable Switching Frequency o External Frequency Synchronization o Hiccup Mode Short-Circuit Protection o Space-Saving (6mm x 6mm) 40-Pin TQFN Package PART MAX15002ATL+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. Applications Pin Configuration appears at end of data sheet. Features IN SENSE OUT ...
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Dual-Output Buck Controller with Tracking/Sequencing ABSOLUTE MAXIMUM RATINGS IN, LX_, CSN_ to SGND..........................................-0.3V to +30V BST_ to SGND ........................................................-0.3V to +30V BST_ to LX_ ..............................................................-0.3V to +6V REG, DREG_, SYNC, EN_, RT, CT, RESET, PHASE, SEL to SGND ...............................-0.3V to ...
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ELECTRICAL CHARACTERISTICS (continued 5.5V to 23V 4.5V to 5.5V, V REG 0.1µ 60kΩ -40°C to +125°C, unless otherwise noted. Typical values are at ...
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Dual-Output Buck Controller with Tracking/Sequencing ELECTRICAL CHARACTERISTICS (continued 5.5V to 23V 4.5V to 5.5V, V REG 0.1µ 60kΩ -40°C to +125°C, unless otherwise ...
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Figure CONVERTER 1 EFFICIENCY vs. LOAD CURRENT 100 12V 16V 3.3V OUT1 ...
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Dual-Output Buck Controller with Tracking/Sequencing (V = 12V, referenced to Figure VALLEY CURRENT-LIMIT THRESHOLD vs. TEMPERATURE 100 R = 25.5kΩ ILIMc TEMP COEFFICIENT (nom.) = 3,333ppm/°C 20 ...
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Figure CHANNEL 2 SHORT CIRCUIT (COINCIDENT MODE) MAX15002 toc17 V 10V/div OUT2 1V/div 0V V OUT1 2V/div 0V 1ms/div SEQUENCING SHUTDOWN MAX15002 toc20 V OUT1 500mV/div V OUT2 ...
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Dual-Output Buck Controller with Tracking/Sequencing (V = 12V, referenced to Figure CONVERTER 1 SHORT-CIRCUIT CONDITION (HICCUP MODE) V OUT1 I OUT1 V LX1 V DL1 V PGOOD1 4ms/div IN-PHASE OPERATION V SYNC V LX1 ...
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Dual-Output Buck Controller with PIN NAME 1 REG 5V Regulator Output. Bypass with a 2.2µF ceramic capacitor to SGND. Track/Sequence Select Input. At startup, connect SEL to REG to configure as a dual tracker or connect SEL to SGND to ...
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Dual-Output Buck Controller with Tracking/Sequencing PIN NAME 20 DH2 Controller 2 High-Side Gate Driver Output. DH2 drives the gate of the high-side MOSFET. Controller 2 High-Side Gate Driver Supply. Connect BST2 to the cathode of the boost diode and to ...
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PWM CONTROLLER 1 IN LDO REG EN 1.24V 1.12V 0.6V REF DOWN1 V REF DIGITAL SOFT-START VR1 AND STOP E/A CLK1 FB1 COMP1 SYNC EN RAMP RT OSC PHASE CLK2 ______________________________________________________________________________________ Dual-Output Buck Controller with Tracking/Sequencing SEL EN1 CONFIG SELECTOR ...
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Dual-Output Buck Controller with Tracking/Sequencing PWM CONTROLLER 2 MAX15002 V REF DOWN2 CLK2 DIGITAL SEL_ SOFT-START V REF AND STOP VR2 EN/ E/A TRACK2 FB2 COMP2 CLK2 RAMP LEVEL SHIFT Detailed Description The MAX15002 is a dual-output, pulse-width-modulat- ed (PWM), ...
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Internal Undervoltage Lockout (UVLO) V must exceed the default UVLO threshold before any IN operation can commence. The UVLO circuitry keeps the MOSFET drivers, oscillator, and all the internal circuitry shut down to reduce current consumption. The UVLO rising threshold ...
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Dual-Output Buck Controller with Tracking/Sequencing Coincident/Ratiometric Tracking (SEL, EN/TRACK2) The enable/tracking input in conjunction with digital soft-start and soft-stop provides coincident/ratiometric tracking. See Figure 1. Track an output voltage by con- necting a resistive divider from the output being tracked ...
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RATIOMETRIC TRACKING V IN EN1 EN/TRACK2 SEL REG Figure 2. Ratiometric Tracking, Coincident Tracking, PGOOD Sequencing Configurations The output of the internal error transconductance amplifier (COMP_) is provided for frequency compen- sation (see the Compensation Design Guidelines sec- tion). The ...
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Dual-Output Buck Controller with Tracking/Sequencing COUNT OF 8 CURRENT LIMIT CLR IN COUNT CLR CLR Figure 3. Hiccup-Mode Block Diagram PWM Controller Design Procedures Setting the Switching Frequency Connect a 750kΩ to 68kΩ resistor ...
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Input Capacitor Selection The discontinuous input current of the buck converter causes large input ripple currents and therefore the input capacitor must be carefully chosen to withstand the input ripple current and keep the input voltage rip- ple within design ...
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Dual-Output Buck Controller with Tracking/Sequencing Setting the Current Limit Connect a 25kΩ to 150kΩ resistor, R SGND to program the valley current-limit threshold (V ) from 50mV to 300mV. ILIM sources 20µA out The resulting voltage ...
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Below are equations that define the power modulator MOD RAMP ⎛ OUT ESR π × × OUT ⎜ + ⎝ R OUT DCR ...
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Dual-Output Buck Controller with Tracking/Sequencing The Type II compensator’s mid-frequency gain (approximately 4dB shown here) is designed to com- pensate for the power modulator’s attenuation at the desired crossover frequency this example, the ...
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Type II: Compensation When f V OUT REF Figure 6a. Type II Compensation Network GAIN (dB) 1ST ASYMPTOTE - (ωC ) MOD ...
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Dual-Output Buck Controller with Tracking/Sequencing Type III: Compensation when f As indicated above, the position of the output capaci- tor’s inherent ESR zero is critical in designing an appro- priate compensation network. When low-ESR ceramic output capacitors are used, the ...
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The gain of the modulator (Gain of the regulator’s pulse-width modulator, LC filter, feedback divider, and associated circuitry—at crossover frequency is: = × Gain 4 MOD 2 π × The gain of the error ...
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Dual-Output Buck Controller with Tracking/Sequencing 30.1kΩ 100pF 11.0kΩ 2.7nF Figure 8. Coincident Dual Tracker with Lossless Current Sense 24 ______________________________________________________________________________________ Typical Operating Circuits 560pF 44.2kΩ 1.91kΩ 10kΩ 200kΩ 150µF PGOOD2 ILIM2 COMP2 FB2 EN/TRACK2 PGND2 CSP2 DL2 CSN2 LX2 DH2 ...
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Figure 9. Dual Sequencer with Lossless Current Sense ______________________________________________________________________________________ Dual-Output Buck Controller with Tracking/Sequencing Typical Operating Circuits (continued) PGOOD2 ILIM2 COMP2 FB2 EN/TRACK2 PGND2 CSP2 DL2 CSN2 LX2 DH2 BST2 DREG2 IN RESET CT SGND REG RT SYNC PHASE SEL ...
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Dual-Output Buck Controller with Tracking/Sequencing Figure 10. Ratiometric Dual Tracker with Accurate Valley-Mode Current Sense 26 ______________________________________________________________________________________ Typical Operating Circuits (continued) PGOOD2 ILIM2 COMP2 FB2 EN/TRACK2 PGND2 CSP2 CSN2 DL2 LX2 DH2 BST2 DREG2 IN RESET CT SGND REG RT ...
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PWM Controller Applications Information Power Dissipation The 40-pin TQFN thermally enhanced package can dis- sipate up to 2.96W. Calculate power dissipation in the MAX15002 as a product of the input voltage and the total REG output current ( ...
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Dual-Output Buck Controller with Tracking/Sequencing Pin Configuration TOP VIEW N. N.C. 33 N.C. SYNC 34 35 SGND MAX15002 36 RT PHASE 37 38 RESET + ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 29 © 2008 Maxim Integrated Products ...