MAX8686EVKIT+ Maxim Integrated, MAX8686EVKIT+ Datasheet
MAX8686EVKIT+
Specifications of MAX8686EVKIT+
Related parts for MAX8686EVKIT+
MAX8686EVKIT+ Summary of contents
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... Telecom Equipment Networking Equipment Servers DDR Memory Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Single/Multiphase, Step-Down, o Operating Range from 4.5V to 20V Input Supply ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase ABSOLUTE MAXIMUM RATINGS IN, INA to PGND.....................................................-0.3V to +22V BST LX...........................................................-0.3V to +6V BST to PGND..........................................................-0.3V to +28V LX to PGND...........................-0. BST to VL................................................................-0.3V to +22V ...
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DC-DC Converter Delivers Up to 25A Per Phase ELECTRICAL CHARACTERISTICS (continued 12V AVL 1V INA REFIN C = 0.22μ 270pF +25°C, unless otherwise noted.) (Note 2) ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase ELECTRICAL CHARACTERISTICS (continued 12V AVL 1V INA REFIN C = 0.22μ 270pF +25°C, unless otherwise noted.) ...
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DC-DC Converter Delivers Up to 25A Per Phase (V = 12V 500kHz, single phase, circuit of Figure 2, unless otherwise noted SINGLE-PHASE EFFICIENCY vs. LOAD CURRENT 95 3.3V OUT 92.5 90.0 87.5 85.0 V ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase (V = 12V 500kHz, single phase, circuit of Figure 2, unless otherwise noted SOFT-START WITH EN CONTROL (I = 10A) OUT MAX8686 toc10 EN 2V/div SS ...
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DC-DC Converter Delivers Up to 25A Per Phase (V = 12V 500kHz, single phase, circuit of Figure 2, unless otherwise noted LX_ SWITCHING WAVEFORM FOR PHASES AND 1 CIRCUIT OF FIGURE 4 LX4 ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase PIN NAME Negative Differential Current-Sense Input. Connect CS- to the output side of the inductor for lossless 1 CS- current sense or to the load side of the current-sense resistor. ...
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DC-DC Converter Delivers Up to 25A Per Phase PIN NAME Frequency-Setting Input. Connect a capacitor from FREQ to GFREQ to set the switching frequency. 33 FREQ The triangle ramp runs between 0 and AVL/2. In multiphase applications, connect FREQ of ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase INA 10μA EN/SLOPE 5.4V LDO GENERATOR VL AVL VOLTAGE REFERENCE SS SLAVE MODE = S1, S2, S3, S5, S6 OPEN MASTER MODE = S1, S2, S5, S6 CLOSE SLAVE MODE ...
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DC-DC Converter Delivers Up to 25A Per Phase Detailed Description DC-DC Converter Control Architecture The MAX8686 step-down regulator uses a PWM, cur- rent-mode control scheme. An internal transconduc- tance amplifier establishes an integrated error voltage. The heart of the PWM ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase For using an external reference on REFIN, SS needs to be tied to REFIN either directly or indirectly through a resistor for soft-start. For REFIN voltage lower than 1.25V, connect ...
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DC-DC Converter Delivers Up to 25A Per Phase Current-Limit Circuit The current-limit threshold is set by a resistor between ILIM and GND. Under soft-overload conditions, when the peak inductor current exceeds the selected current limit, the high-side MOSFET is turned ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase Overvoltage Protection The MAX8686 provides output overvoltage protection (OVP). The OVP threshold is set at 20% above the set output voltage. When the overvoltage condition is expe- rienced, the output ...
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DC-DC Converter Delivers Up to 25A Per Phase C16 0.22μF C17 R13 1μF 10Ω R1 C18 10kΩ 0.22μF 31 BST LX 32 POWER- POK OK C1 330pF GFREQ 33 FREQ C2 C3 15pF 10nF 130kΩ 35 ILIM ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase INA 27 GND 28 AVL ...
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DC-DC Converter Delivers Up to 25A Per Phase Design Procedures Setting the Output Voltage To set the output voltage for the MAX8686, connect REFIN to the center of an external resistor-divider from PHASE/REFO to GND (R3 and R4 of Figures ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase Setting the Peak Current Limit The peak current-limit threshold (V a resistor connected from ILIM to GND. An internal 10µA current source flows through this resistor to set a voltage ...
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DC-DC Converter Delivers Up to 25A Per Phase ripple-current requirement (I RMS switching currents as defined by the following equations: = × × RMS OUT MAX _ for ( ≤ × × ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase resistor, and compensation capacitors determine the loop stability. The inductor and output capacitor are chosen based on performance, size, and cost. Additionally, the compensation resistor and capacitors are selected to ...
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DC-DC Converter Delivers Up to 25A Per Phase be less than or equal to 1/5 the switching frequency. Select a value for f in the range << ≤ pMOD C The feedback voltage-divider gain (V ...
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Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase Applications Information PCB Layout Guidelines Careful PCB layout is critical to achieve low switching losses and clean, stable operation. The switching power stage requires particular attention. Follow these guidelines for ...
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