MAX17014EVKIT+ Maxim Integrated Products, MAX17014EVKIT+ Datasheet
MAX17014EVKIT+
Specifications of MAX17014EVKIT+
Related parts for MAX17014EVKIT+
MAX17014EVKIT+ Summary of contents
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... LCD TV Panels LCD Monitor Panels Dual Mode is a trademark of Maxim Integrated Products, Inc. True Shutdown is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’ ...
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Low-Cost Multiple-Output Power Supply for LCD TVs ABSOLUTE MAXIMUM RATINGS V , IN2, OVIN, SUP, EN1, EN2, FSEL to GND ......-0.3V to +22V IN GND1, OGND, CPGND to GND .........................................±0.3V MODE, DLP, CTL, THR, DEL1, DEL2 GND ...-0.3V ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 erwise noted.) PARAMETER REFERENCE REF Output Voltage REF Load Regulation REF Sink Current REF Undervoltage Lockout Threshold STEP-DOWN REGULATOR OUT Voltage in Fixed Mode FB2 ...
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Low-Cost Multiple-Output Power Supply for LCD TVs ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 erwise noted.) PARAMETER FB1 Load Regulation FB1 Line Regulation FB1 Input Bias Current FB1 Transconductance FB1 Voltage Gain ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 erwise noted.) PARAMETER AV SWITCH DD SWI Supply Range SWI Overvoltage Fault Threshold SWI-SWO Switch Resistance SUI-SWI Pullup Resistance SUI Output Sink Current SWI-SUI Done ...
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Low-Cost Multiple-Output Power Supply for LCD TVs ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 erwise noted.) PARAMETER Mode 1 Voltage Threshold MODE Capacitor Charge Current (Mode 2) MODE Voltage Threshold for Enabling ...
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ELECTRICAL CHARACTERISTICS (Circuit of Figure 12V IN2 otherwise noted.) (Note 4) PARAMETER GENERAL V , IN2 Input Voltage Range IN SMPS Operating Frequency V Undervoltage Lockout Threshold IN VL REGULATOR VL Output Voltage ...
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Low-Cost Multiple-Output Power Supply for LCD TVs ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 otherwise noted.) (Note 4) PARAMETER POSITIVE AND NEGATIVE CHARGE-PUMP REGULATORS V Input Supply Range SUP V Overvoltage Threshold ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V IN2 otherwise noted.) (Note 4) PARAMETER tag e Thr eshol d for E nab ...
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Low-Cost Multiple-Output Power Supply for LCD TVs (Circuit of Figure INL SUP wise noted.) STEP-DOWN REGULATOR SOFT-START (HEAVY LOAD) MAX17014 toc04 4.00ms/div ...
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Figure INL SUP wise noted.) STEP-UP REGULATOR CURRENT LIMIT vs. INPUT VOLTAGE 6 4.7µH 5.5 (CDEP134NP-4R8M 9.3A) SAT 5 16V DD 4.5 4.0 3.5 3.0 ...
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Low-Cost Multiple-Output Power Supply for LCD TVs (Circuit of Figure INL SUP wise noted.) POSITIVE CHARGE-PUMP REGULATOR NORMALIZED LOAD REGULATION 0.4 0 -0.4 -0.8 -1.2 -1.6 -2 100 125 ...
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Figure INL SUP wise noted.) OPERATIONAL AMPLIFIER RAIL-TO-RAIL INPUT/OUTPUT MAX17014 toc22 4.0µs/div A: INPUT SIGNAL, 5V/div B: OUTPUT SIGNAL, 5V/div OPERATIONAL AMPLIFIER SMALL-SIGNAL RESPONSE MAX17014 toc25 A ...
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Low-Cost Multiple-Output Power Supply for LCD TVs PIN NAME 1 POS1 Operational Amplifier 1 Noninverting Input 2 OUT1 Operational Amplifier 1 Output GON Low-Level Regulation Set-Point Input. Connect THR to the center of a resistive voltage-divider 3 THR between AV ...
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PIN NAME Step-Down Regulator Switching Node. LX2 is the source of the internal n-channel MOSFET 23, 24 LX2 connected between IN2 and LX2. Connect the inductor and Schottky catch diode close to both LX2 pins to minimize the trace area ...
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Low-Cost Multiple-Output Power Supply for LCD TVs V IN 12V 0.1μF C3 10μF C4 0.1μF OUT 3. 2.6μH 22μ 0.1μ 1μF REF C8 0.22μF C9 0.1μF C10 0.15μF STEP-DOWN, NEGATIVE CHARGE ...
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Typical Operating Circuit The typical operating circuit (Figure 1) of the MAX17014 is a complete power-supply system for TFT LCD panels in monitors and TVs. The circuit generates a +3.3V logic supply, a +16V source driver supply, a +34.5V positive ...
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Low-Cost Multiple-Output Power Supply for LCD TVs V (12V) IN IN2 3.3V 2A LX2 CPGND OUT FB2 REF REF GND DEL1 DEL2 STEP-DOWN, EN1 NEGATIVE CHARGE PUMP ON/OFF STEP-UP, EN2 POSITIVE CHARGE DLP PUMP ...
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PWM Controller Block The heart of the PWM control block is a multi-input, open-loop comparator that sums three signals: the out- put voltage signal with respect to the reference voltage, the current-sense signal, and the slope compensation. The PWM controller ...
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Low-Cost Multiple-Output Power Supply for LCD TVs On the rising edge of the internal clock, the controller sets a flip-flop, turning on the n-channel MOSFET and applying the input voltage across the inductor. The cur- rent through the inductor ramps ...
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During the first half-cycle, N1 turns on and charges fly- ing capacitors C20 and C21 (Figure 3). During the sec- ond half cycle, N1 turns off and P1 turns on, level shifting C20 and C21 by V SUP across C23 ...
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Low-Cost Multiple-Output Power Supply for LCD TVs High-Voltage Switch Control The MAX17014’s high-voltage switch control block (Figure 5) consists of two high-voltage p-channel MOSFETs: Q1, between SRC and GON and Q2, between REF 8μA DLP Q4 V REF VL /2 ...
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Select the first mode by connecting MODE to VL. When CTL is logic-high, Q1 turns on and Q2 turns off, con- necting GON to SRC. When CTL is logic-low, Q1 turns off and Q2 turns on, connecting GON to DRN. ...
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Low-Cost Multiple-Output Power Supply for LCD TVs Driving Pure Capacitive Load The operational amplifiers are typically used to drive the LCD backplane (VCOM) or the gamma-correction divider string. The LCD backplane consists of a distrib- uted series capacitance and resistance, ...
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V UVLO DEL2 STARTS CHARGING WHEN EN2 IS HIGH AND THE BUCK SOFT-START IS FINISHED. Figure 7. Power-Up Sequence ______________________________________________________________________________________ Low-Cost Multiple-Output Power Supply for LCD TVs REF SS REF SUI_DONE HIGH IMPEDANCE ...
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Low-Cost Multiple-Output Power Supply for LCD TVs During steady-state operation, if any output of the four regulators (step-down regulator, step-up regulator, positive charge-pump regulator, and negative charge- pump regulator) does not exceed its respective fault- detection threshold, the MAX17014 activates ...
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The worst case 0 RMS OUT VIN OUT For most applications, ceramic capacitors are used because of their high ripple current and surge current capabilities. For optimal circuit long-term ...
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Low-Cost Multiple-Output Power Supply for LCD TVs The maximum output current, input voltage, output volt- age, and switching frequency determine the inductor value. Very high inductance values minimize the cur- rent ripple and therefore reduce the peak current, which decreases ...
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the peak inductor current (see the AVDD PEAK Inductor Selection section). For ceramic capacitors, the output voltage ripple is typically dominated The voltage rating and temperature AVDD RIPPLE(C) characteristics of the output ...
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Low-Cost Multiple-Output Power Supply for LCD TVs Increasing the flying capacitors (connected to DRVN and DRVP) value lowers the effective source impedance and increases the output-current capability. Increasing the capacitance indefinitely has a negligible effect on output-current capability because the ...
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Place all feedback voltage-divider resistors as close to their respective feedback pins as possible. The divider’s center trace should be kept short. Placing the resistors far away causes their FB traces to become antennas that can pick up switch- ...
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Low-Cost Multiple-Output Power Supply for LCD TVs TOP VIEW LX1 LX1 SWI SUI FB1 SWO OVIN NEG2 POS2 OUT2 OGND NEG1 Chip Information PROCESS: BiCMOS 32 ______________________________________________________________________________________ ...
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