max5059auit Maxim Integrated Products, Inc., max5059auit Datasheet
max5059auit
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Rev 0; 10/03 EVALUATION KIT AVAILABLE Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs General Description The MAX5058/MAX5059 enable secondary-side syn- chronous rectification in isolated power supplies using widely available power MOSFETs. These devices facili- tate the commutation ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs ABSOLUTE MAXIMUM RATINGS V+ to GND .............................................................-0.3V to +30V PGND to GND .......................................................-0.3V to +0.3V COMPV VDR, TSF to GND......................... -0.3V to +14V REG All Other Pins to GND ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs ELECTRICAL CHARACTERISTICS (continued) (V+ = +12V, GND = PGND = 0, VDR = 1.785V 2.2µ 1µF, C VSP VREG VP are ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs ELECTRICAL CHARACTERISTICS (continued) (V+ = +12V, GND = PGND = 0, VDR = V REG V = 1.785V 2.2µ 1µF, C VSP VREG VP are at T ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs ELECTRICAL CHARACTERISTICS (continued) (V+ = +12V, GND = PGND = 0, VDR = 1.785V 2.2µ 1µF, C VSP VREG VP are ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs (V+ = +12V, GND = PGND = 0, VDR = V REG V = 1.785V 0.5V 2.2µF, C VSP COMPS VREG LDO OUTPUT VOLTAGE (V ) VREG ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs (V+ = +12V, GND = PGND = 0, VDR = 1.785V 0.5V, C VSP COMPS VREG QUIESCENT SUPPLY CURRENT vs. INPUT VOLTAGE (MAX5058) 3.0 2.8 2.6 ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs (V+ = +12V, GND = PGND = 0, VDR = V REG V = 1.785V 0.5V 2.2µF, C VSP COMPS VREG SWITCHING SUPPLY CURRENT vs. TEMPERATURE (MAX5059) ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs (V+ = +12V, GND = PGND = 0, VDR = 1.785V 0.5V, C VSP COMPS VREG ZERO-CURRENT PROPAGATION DELAY vs. TEMPERATURE 90 10mV OVERDRIVE 85 80 ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs PIN NAME Zero-Inductor Current-Sense Comparator Input. The source voltage of the freewheeling FET (N4 in the Typical 1 ZCP Application Circuit) is sensed. The gate drive is terminated when this voltage ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs MARGINING BLOCK MRGU 8 50kΩ MRGD 9 50kΩ RMGD 10 QMD RMGU 11 QMU ERROR AMPLIFIER BLOCK COMPV 13 INV 14 E/A I REF I 12 REF 50μA REFERENCE CURRENT BLOCK ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs Detailed Description The MAX5058/MAX5059 enable the design of high-effi- ciency, isolated power supplies using synchronous rec- tification on the secondary side. These devices commutate the secondary-side MOSFETs by providing a clean ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs The MOSFET drivers are synchronized to the primary- side switching by using the BUFIN input. BUFIN accepts the PWM information from the primary through a high-speed optocoupler or through a small ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs 4.7Ω MAX5051 REG5 LXVDD LXH GND Figure 4. Interface of MAX5058 to MAX5051 Using a High-Speed Optocoupler 4.7Ω MAX5051 REG5 LXVDD LXH 2kΩ GND Figure 5. Interface of MAX5059 to MAX5051 ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs Reverse-Current Prevention in Synchronous Rectifiers One benefit of secondary-side synchronous rectifica- tion is increased efficiency. Another benefit is that it allows the inductor current to remain continuous throughout the operating load ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs C27 R19 C28 COMPV 13 INV 14 E/A I REF I REF 12 50μA Figure 8. Optocoupler Connection for V OUT > 2.5V V REG (PIN 23) R19 C27 C28 COMPV ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs 1) Select a parallel equivalent resistance R produce the nominal reference voltage. For exam- ple 35.4kΩ gives you Select the margin-up percentage value: Δ ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs E/A I REF 50μA Figure 12. Remote-Sense Amplifier Connection for V OUT > 2.5V (or any Other Arbitrary Voltage) 9) Select a value for R and calculate R 1 3.3V: R ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs V IN+ V IN- SYNCIN STARTUP SYNCOUT V IN+ V IN+ 36V TO 72V V V IN- IN- SYNCIN STARTUP SYNCOUT V IN+ V IN- SYNCIN STARTUP SYNCOUT Figure 13. Paralleling ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs 1.5μA SLOPE = 1.15μA/V 1.25V Figure 14. Transfer Function Curve of the Block FEEDBACK NETWORK V OUT PWM STAGE E/A AND FILTERS G (s) PS ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs POWER-STAGE GAIN/PHASE GAIN -10 -15 - 100 FREQUENCY (Hz) Figure 16. Idealized (with Ideal Power Stage and Optocoupler) Frequency Response (G PS (s)) ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs Figure 18. Schematic of a +48V Input, 3.3V at 15A Output, Synchronous Rectified, Isolated Power Supply 22 ______________________________________________________________________________________ Typical Application Circuit ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs R20 = R26 = R36 = 0Ω LOAD CURRENT (A) Figure 19. Efficiency at Nominal 3.3V Output Voltage ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs R20 = R26 = R36 = 0Ω 2μs/div Figure 23. Output Voltage Ripple at +48V Nominal Input Voltage and Full Load Current (Scope Bandwidth = 20MHz) Pin Configuration TOP VIEW ZCP ...
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Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages Maxim cannot assume responsibility for use ...