MAX5941ACSE Maxim Integrated, MAX5941ACSE Datasheet
MAX5941ACSE
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MAX5941ACSE Summary of contents
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... PWM Controller Wide Input Range: 18V to 67V Current-Mode Control Leading-Edge Blanking Internally Trimmed 275kHz ±10% Oscillator Soft-Start PART MAX5941AESE -40°C to +85° (S16M-6) MAX5941ACSE MAX5941BESE -40°C to +85° (S16M-6) Applications MAX5941BCSE TOP VIEW Features Ordering Information PIN ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ABSOLUTE MAXIMUM RATINGS (All voltages are referenced unless otherwise noted.) EE GND........................................................................-0.3V to +90V OUT, PGOOD ...........................................-0.3V to (GND + 0.3V) RCL, GATE .............................................................-0.3V to +12V UVLO ........................................................................-0.3V to ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ELECTRICAL CHARACTERISTICS (continued 48V, GATE = PGOOD = PGOOD = OPEN, V- tied to OUT, V+ tied to GND, UVLO = (GND - unless ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ELECTRICAL CHARACTERISTICS (PWM Controller) (continued) (All voltages referenced to V 13V, a 10µF capacitor connects V DD SS_SHDN, NDRV = open circuit, OPTO = V-, T PARAMETER SYMBOL V+ Shutdown ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices Note 1: All min/max limits for the PD interface are production tested at +85°C (extended grade)/+70°C (commercial grade). Limits at +25°C and -40°C are guaranteed by design. All PWM controller min/max limits ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = (GND - Typical values are +25°C. All voltages are ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = (GND - Typical values are +25°C. All voltages are ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = (GND - Typical values are +25°C. All voltages are ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices ) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = (GND - Typical values are +25°C. All voltages are ...
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... EE OUT impedance. 12 GND Ground. Referenced to V Current-Sense Input. Referenced to V-. Turns power switch off current limiting also the feedback for the current-mode controller. CS connects to the PWM controller through a leading-edge blanking circuit the ground terminal of the PWM Controller. Connect to OUT. ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices Table 1. PD Power Classification/R CLASS USAGE 0 Default 1 Optional 2 Optional 3 Optional 4 Not allowed *Class 4 reserved for future use. Detailed Description The MAX5941A/MAX5941B integrate a complete power ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices Table 2. Setting Classification Current CLASS R (Ω ( 10k 12 732 12 392 12 255 12.6 to ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices The PSE determines the class applying a volt- age at the PD input and measures the current sourced out of the PSE. When the PSE applies a voltage ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices Thermal Dissipation During classification mode, if the PSE applies the maxi- mum DC voltage, the maximum voltage drop from GND to V will be 13V. If the maximum classification current RCL of ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices HIGH- VOLTAGE V- REGULATOR EN OUT MAX5941A ONLY SLOPE COMPENSATION 26mV/µs 26mV/µs ∑ OPTO SS_SHDN 2.4V 0.4V Figure 4. MAX5941A/MAX5941B PWM Controller Functional Diagram ______________________________________________________________________________________ IN BIAS WINDING ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices 1N4148 V IN (30V TO 72V 47µF UVLO RCL R DISC GATE 25.5kΩ PGOOD R CL SS_SHDN C SS 0.1µF PGOOD V EE Figure 5. Forward Converter to ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices R DISC 25.5kΩ Figure 6. Flyback Converter PWM Comparator and Slope Compensation An internal 275kHz oscillator determines the switching frequency of the controller. At the beginning of each cycle, NDRV ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices × × SENSE OUT × where and N and N S turns on the secondary and primary side of ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices 4) The reset winding turns ratio (N low enough to guarantee that the entire energy in the transformer is returned to V+ within the off cycle at the maximum duty cycle. Use ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices Table 3. Component Suppliers COMPONENT Power FETS Current-Sense Resistors Diodes Capacitors Magnetics where the combined RMS output ripple due to RIPPLE V , the ESR ripple, and V RIPPLE,ESR capacitive ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices SIGNAL PAIRS RJ- POWER OVER SPARE PAIRS GND R1** R DISC 25.5kΩ 68nF 60V R2** RCL -48V *OPTIONAL. **R1 AND R2 ARE OPTIONAL AND ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices POWER-SUPPLY CIRCUIT 1 GND R DISC 25.5kΩ 60V 68nF -48V POWER-SUPPLY CIRCUIT 2 *OPTIONAL AND R2 ARE OPTIONAL AND WHEN USED, THEY MUST TOTAL TO 25.5kΩ AND REPLACE THE 25.5kΩ ...
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IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices GND R DISC 25.5kΩ 60V -48V ______________________________________________________________________________________ V+ GND NDRV MAX5941A MAX5941B SS_SHDN PGOOD V PGOOD UVLO RCL GATE OPTO OUT GATE TRANSISTOR ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products DIM ...