MAX8541 MAXIM [Maxim Integrated Products], MAX8541 Datasheet
MAX8541
Related parts for MAX8541
MAX8541 Summary of contents
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... Both devices are available in the space-saving 16-pin QSOP package. The MAX8541 EV kit evaluates the MAX8540 and the MAX8541 to speed designs. Design examples are also available in application notes: 50W Voltage-Mode Forward Converter Design with the MAX8541 and 50W Current-Mode Forward Converter Design with the MAX8540 ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0.3V to +20V CC OPTO, UV, OV, EN, PRAMP, ILIM, REF to GND ......-0.3V to +6V SCOMP, FREQ, CS, SKTON, SKTOFF, SS, MAXDTY to ...
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... V SS Pulldown Resistance in Shutdown I SS Time FREQUENCY Initial Accuracy R FREQ R FRE Q Switching Frequency Range R FRE Q SCOMP (MAX8540) R SCOMP Slope Compensation R SCOMP PRAMP (MAX8541) R PRAMP Ramp Voltage Amplitude R PRAMP R PRAMP DRV (MOSFET DRIVER) C DRV Rise Time C DRV _______________________________________________________________________________________ = 2V 32.4kΩ, C OPTO ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies ELECTRICAL CHARACTERISTICS (continued 12V 1µ VCC REF 68kΩ 25kΩ, C SCOMP PRAMP SKTON noted. Typical ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies ELECTRICAL CHARACTERISTICS (continued 12V 1µ VCC REF 25kΩ 0.01µF, C PRAMP SKTON unless otherwise noted.) (Note 5) ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies (V = 12V +25°C, unless otherwise specified NO-LOAD SWITCHING CURRENT CC vs. TEMPERATURE 6.0 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4 ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies (V = 12V +25°C, unless otherwise specified FREQUENCY vs. INPUT VOLTAGE 1000 800 R = 10kΩ FREQ 600 400 R = 20kΩ FREQ 200 R = ...
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... Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies PIN NAME MAX8540 MAX8541 5V Reference Voltage Output. Bypass to ground with a 1µF capacitor. REF is pulled to GND 1 1 REF during shutdown. System Input Overvoltage Monitoring. The OV threshold is 3.021V with 130mV hysteresis Connect to the center of a resistor-divider from the system input to GND to set the overvoltage trip point (see the Overvoltage Threshold section) ...
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... FREQ/SYNC − Switching Frequency and Synchronization ) The MAX8540/MAX8541 oscillator operates in two modes: stand-alone or synchronized (sync). A single input, FREQ/SYNC, doubles as the attachment point for RB RC − the frequency-programming resistor and as the syn- chronization input. The mode recognition is automatic, is the OV based on the signal applied to FREQ/SYNC ...
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... L1 is the output induc- tance, V OUT f is the switching frequency, and R S sense resistance. is equal to: Voltage-Ramp Amplitude (MAX8541) The MAX8541 is a voltage-mode device and features adjustable voltage ramp. Connect a resistor from PRAMP to GND (R magnitude SUM 2 SCF IN ...
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... R is from 12.4kΩ to 42kΩ. PRAMP The soft-start feature allows converters built using the MAX8540/MAX8541 to apply power to the load in a controllable soft ramp, thus reducing startup surges and stresses. It also determines power-up sequencing when several converters are used. Upon power turn-on, the soft-start pin acts as a current sink to discharge any capacitance connected to it ...
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... Applications Information Refer to the following application notes for the MAX8540/MAX8541 application circuits and applica- tions information: 50W Current-Mode Forward Converter Design with the MAX8540 and 50W Voltage- Mode Forward Converter Design with the MAX8541. 12 ______________________________________________________________________________________ Pin Configurations (continued) TOP VIEW REF ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies V UVLO COMPARATOR 8V OVERVOLTAGE 3.02V COMPARATOR OV UV 1.25V EN 1.2V SKTOFF SHORT-CIRCUIT SKTON TIMER CS ILIM SS SS_RESET REF Figure 2. MAX8540 Functional Diagram ______________________________________________________________________________________ ...
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... COMPARATOR 8V OVERVOLTAGE 3.02V COMPARATOR OV UNDERVOLTAGE COMPARATOR UV 1.25V EN 1.2V SKTOFF SHORT-CIRCUIT SKTON TIMER CS ILIM SS SS_RESET REF Figure 3. MAX8541 Functional Diagram 14 ______________________________________________________________________________________ Functional Diagrams (continued) TEMP OK MAX8541 SS_RESET CLK ENABLE 5µA OSC DECODER RAMP FREQ/SYNC V 5V REF REFERENCE ENABLE DRIVE LOGIC DRV PRAMP VOLTAGE ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies INPUT 36V TO 76V MAX8515 OPTIONAL OV SYNCHRONIZATION UV FREQ/SYNC U1 SS REF MAX8540 ILIM SCOMP OPTO OFF ON ______________________________________________________________________________________ OUT IN FB VIN PGND GND V CC DRV CS ...
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Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages. Maxim cannot assume responsibility for use of ...