MAX5936 MAXIM [Maxim Integrated Products], MAX5936 Datasheet
MAX5936
Related parts for MAX5936
MAX5936 Summary of contents
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... Rev 1; 1/05 -48V Hot-Swap Controllers with V General Description The MAX5936/MAX5937 are hot-swap controllers for -10V to -80V rails. The MAX5936/MAX5937 allow circuit line cards to be safely hot-plugged into a live back- plane without causing a glitch on the power supply. These devices integrate a circuit-breaker function requiring no R ...
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Hot-Swap Controllers with V Step Immunity and No R ABSOLUTE MAXIMUM RATINGS PGOOD (PGOOD), LP, OUT EE STEP_MON to GND............................................+0.3V to -85V PGOOD (PGOOD ....................................-0.3V to +85V OUT PGOOD (PGOOD), LP, STEP_MON to ...
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... MAX5937LB MAX5937AB MAX5936LC/ T MAX5936AC/ A MAX5937LC MAX5937AC MAX5936LA/ T MAX5936AA/ A MAX5937LA MAX5937AA MAX5936LB/ T MAX5936AB MAX5937LB MAX5937AB MAX5936LC/ T MAX5936AC/ A MAX5937LC MAX5937AC T A 150mV overdrive, C LOAD to GATE below 1V STEP TH I STEP_OS V ...
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Hot-Swap Controllers with V Step Immunity and No R ELECTRICAL CHARACTERISTICS (continued -10V to -80V GND - STEP_MON Typical values are -48V +25°C.) (Notes ...
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... A GATE-DRIVE VOLTAGE vs. INPUT VOLTAGE 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6 INPUT VOLTAGE (V) RETRY TIME vs. TEMPERATURE 4 100µF GATE LOAD 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 -40 - TEMPERATURE (°C) MAX5936_A CIRCUIT-BREAKER EVENT MAX5936 toc07 V 10V/div V 50V/div V 50V/div I 2A/div 1ms/div GATE OUT PGOOD IN 5 ...
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... GATE LOAD 9 72V IN 9.0 8 48V 8.0 IN 7.5 7.0 6 12V IN 6.0 5.5 5.0 85 -40 - TEMPERATURE (°C) MAX5936_A INPUT VOLTAGE STEP EVENT (FAULT) MAX5936 toc12 = 75Ω 50V/div V GATE 10V/div V OUT 50V/div V PGOOD 50V/div I IN 2A/div 4ms/div GATE TO V CLAMP VOLTAGE EE MOSFET FULLY ENHANCED = -48V ...
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... To turn off the device, drive UVLO below the 1.125V falling threshold for the 1.5ms glitch rejection period. Leave UVLO disconnected for the default 31V undervoltage lockout threshold. Cycle UVLO to unlatch the MAX5936L/ MAX5937L after a fault. Cycling UVLO low deasserts PGOOD. ...
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... LP pin is shut off. The MAX5936A_/MAX5937A_ will timeout for then retry the load-probe test. The MAX5936L_/ MAX5937L_ will latch the fault condition indefinitely until ...
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... GATE is immediately as pulled to V DS(ON) enters fault management 50V/div V GATE 10V/div V OUT 50V/div V PGOOD 50V/div I IN 2A/div Figure 5. MAX5936 Startup in Fault Condition SENSE ALL VOLTAGES V REFERENCED TO GND EE 20V/div V LP 20V/div V OUT 20V/div 40ms/div ( and is available ...
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... V OUT 20V/div V PGOOD 20V/div I IN 1A/div = 100µF = 100Ω < 0.74V ) Figure 7. MAX5936 Response to a Step Input (V OUT turning off the power MOSFET EE Fault Management during GATE ramp at CB for longer than 1.2ms during CB during full enhancement, and SC to turn off the external MOSFET and ...
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... MOSFET [I and the MAX5936/MAX5937 over the application’s operating temperature range. If the tempco of the power MOSFET is greater than that of the MAX5936/ MAX5937, then additional margin will be required in and SC selecting the circuit-breaker and short-circuit voltages at higher temperatures as compared to +25° ...
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... MAX5936_N/ MAX5937_N is fully recy- cled. UVLO provides an accurate means to set the turn-on volt- age level for the MAX5936/MAX5937. Use a resistor- divider network from GND to V turn-on voltage (Figure 11). UVLO has hysteresis with a rising threshold of 1.25V and a falling threshold of 1.125V. ...
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... MAX5936/MAX5937 immediately and very rapidly pull GATE to V inrush current spiking. GATE is held low for 350µs. About 1ms after the start of GATE pulldown, the MAX5936/MAX5937 begin to ramp GATE up to turn on the MOSFET in a controlled manner, which results in ramping V GATE Cycles section in Appendix A). ...
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... The following is a brief analysis for finding the resistor and capacitor. For a more complete analysis, see Appendix B. Figure functional diagram exhibiting the elements of the MAX5936/MAX5937 involved in the step immunity function. This block diagram shows the parallel relationship between V OUT Each has an I*R component establishing the DC level prior to a step ...
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... Setting the Test Current Level for The load-probe test is a current test of the load that avoids turning on the power MOSFET. The MAX5936/ MAX5937 have an internal switch (Q1 in Figure 14) that pulls current through the load and through an external current-limiting resistor, R ...
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... This graph SLEW avoid impacting the MOSFET turn-off performance of the MAX5936/MAX5937. To benefit from the temperature compensation designed into the MAX5936/MAX5937, the part should be placed as close as possible to the power MOSFET that it is con- trolling. The V are inversely SLEW be placed close to the source pin of the power MOSFET and they should share a wide trace ...
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... Add a high-frequency (ceramic) bypass capacitor on the backplane as close as possible to the plug- 100 1000 in connector (Figure 17). 3) Add a 1kΩ resistor in series with the MAX5936/ MAX5937’s GND pin and a 0.1µF capacitor from SLEW GND to V The power-up GATE cycle and the step GATE cycle are quite similar but have distinct differences ...
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... Step Immunity and No R BACKPLANE PLUG-IN CARD 48V ±10% 68V 1µF 0.1µF TVS Figure 17. Protecting the MAX5936/MAX5937 Input from High- Voltage Transients Power-Up to Fault Management: 1) Same as step 1 above. [GATE turn-on] 2) Same as step 2 above. [V ramp] OUT 3) GATE ramps to 90% of full enhancement while ...
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... OUT ed in the application impossible to give a fixed set of design guidelines that rigidly apply over the wide array of applications that use the MAX5936/ MAX5937. There are, however, limiting conditions and recommendations that should be observed. One limiting condition that must be observed is to ensure that the STEP_MON time constant, τ ...
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Hot-Swap Controllers with V Step Immunity and No R Verification of the Step It is prudent to verify conclusively that all circuit-breaker and short-circuit faults will be blocked for all ramp rates this, some form of graphical ...
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Hot-Swap Controllers with V V RESPONSE TO V RAMP OF 300V/ms OUT IN 2.7 2.4 2.1 1.8 1.5 1.2 0.9 t STEP 0 TIME (µs) D ...
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... SENSE TYPICAL TIME (s) PART t 220m ONDLY t 220m MAX5936LA LP 3.5 MAX5936LB LP_OFF MAX5936LC 1.26m PGOOD MAX5936LN t 3.5 RETRY MAX5936AA 1.4m CB_DLY MAX5936AB t 1.5m REJ MAX5936AC — 350µ MAX5937LA MAX5937LB — 1m MAX5937LC MAX5937LN MAX5937AA MAX5937AB MAX5937AC GND * MAX5937 PGOOD UVLO * V OUT STEP_MON LP V GATE ...
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Hot-Swap Controllers with V (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 TOP VIEW FRONT VIEW Maxim cannot ...