MAX1858EEG+ Maxim Integrated Products, MAX1858EEG+ Datasheet
MAX1858EEG+
Specifications of MAX1858EEG+
Related parts for MAX1858EEG+
MAX1858EEG+ Summary of contents
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... DSP, ASIC, and FPGA Power Supplies Set-Top Boxes Broadband Routers Servers Typical Operating Circuit appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. o Two Independent Output Voltages o 180° Out-of-Phase Operation o 90° ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +25V PGND to GND .......................................................-0.3V to +0. GND ..................-0.3V to the lower of +6V and (V+ + 0.3V) L ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V ILIM_ = V , SYNC = GND compensation components for COMP_ are from Figure 1, T PARAMETER Internal oscillator ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR (Circuit of Figure 12V +25°C, unless otherwise noted EFFICIENCY vs. LOAD 100 90 OUT2 80 OUT1 ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR (Circuit of Figure 12V +25°C, unless otherwise noted SOFT-START AND SOFT-STOP WAVEFORM MAX1858 toc07 OUT2 1V/div 0V ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR PIN NAME Compensation Pin for Regulator 2 (REG2). Compensate REG2’s control loop by connecting a series 1 COMP2 resistor (R (C COMP2B Feedback Input for Regulator 2 (REG2). Connect ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR PIN NAME 14 DH1 High-Side Gate Driver Output for Regulator 1 (REG1). DH1 swings from LX1 to BST1. External Inductor Connection for Regulator 1 (REG1). Connect LX1 to the ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR 23V R V+ 4.7Ω 0.22µF C IN1 2 × 10µF N H1* OUTPUT1 1.8V 1µH OUT C OUT1 4 × ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR REF GND COMP1 FB1 SOFT-START DAC SEQUENCING OSC SYNC OSCILLATOR CK0 RST RESET EN UVLO V REF SHUTDOWN V L COMP2 FB2 Figure 2. Functional Diagram The internal V ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR High-Side Gate-Drive Supply (BST_) Gate-drive voltages for the high-side N-channel switch- es are generated by the flying-capacitor boost circuits (Figure 3). A boost capacitor (connected from BST_ to LX_) ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR V L 5Ω BST_ DH_ LX_ MAX1858 Figure 3. Reducing the Switching-Node Rise Time On the rising edge of EN both controllers enter soft- start. Soft-start gradually ramps up ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR 0 TIME Figure 4. “Valley” Current-Limit Threshold Point Design Procedure Effective Input Voltage Range Although, the MAX1858 controller can operate from input supplies ranging from 4.75V to 23V, the ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR For output voltages below 1V, set the MAX1858 output voltage by connecting a voltage-divider from the output to FB_ to REF (Figure 6). Select R_C (FB to REF resis- ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR Connect ILIM_ to V for the default 100mV (typ) current- L limit threshold. For an adjustable threshold, connect a resistor (R _) from ILIM_ to GND. The relationship ILIM ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR removed from the output filter capacitors by a sudden load step. The amount of output-voltage sag is also a function of the maximum duty factor, which can be cal- ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR COMP_ g M_GROUP V R SET COMP_ C C COMP_A COMP_B Figure 7. Fixed-Frequency Voltage-Mode Control Loop • R has much higher impedance than ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR BODE PLOT FOR VOLTAGE- MODE CONTROLLERS ESR f Z-COMP_A -10 -20 f COMP_B -30 -40 0.001 0.01 0.1 ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR capacitance must often be added (see the V tion in the Design Procedure section). The absolute point of dropout is when the inductor cur- rent ramps down during the ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR by routing power to the MOSFETs from outside using the top copper layer, while connecting PGND and LX_ underneath the 8-pin SO package. • When trade-offs in trace lengths ...
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Dual 180° Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR V 4.75V TO 23V IN OUTPUT1 = 1.8V, 10A N L1 CLOCK OUTPUT RESET OUTPUT ON OFF 20 ______________________________________________________________________________________ Typical Operating Circuit BST1 BST2 DH1 DH2 ...
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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 ____________________ 21 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...