MAX5042 MAXIM [Maxim Integrated Products], MAX5042 Datasheet
MAX5042
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MAX5042 Summary of contents
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... ICs feature integrated switching power MOSFETs con- nected in a voltage-clamped, two-transistor, power-circuit configuration. These devices operate from a wide 20V to 76V input voltage range. The MAX5042 includes a hot- swap controller for use with an external power MOSFET to limit inrush current for applications where the power sup- ply is plugged into a live power backplane ...
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... Continuous Power Dissipation (T 56-Pin Thin QFN (derate 47.6mW/°C above +70°C) .......3.8W Junction to Ambient Thermal Resistance, θ Operating Temperature Range MAX5042ATN ................................................-40°C to +125°C MAX5043ETN ..................................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller ELECTRICAL CHARACTERISTICS (V = 20V to 76V 18V, C POSINPWM REG15 0.22µ 10kΩ 0.22µF, V DRVDEL DRVDEL otherwise noted. Typical values are at V ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller ELECTRICAL CHARACTERISTICS (continued 20V to 76V 18V, C POSINPWM REG15 0.22µ 10kΩ 0.22µF, V DRVDEL DRVDEL otherwise noted. Typical values are at ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller ELECTRICAL CHARACTERISTICS (continued 20V to 76V 18V, C POSINPWM REG15 0.22µ 10kΩ 0.22µF, V DRVDEL DRVDEL otherwise noted. Typical values are at ...
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... PARAMETER SYMBOL DEN Hysteresis DEN Input Resistance SUPPLY CURRENT Supply Current Standby Supply Current HOT-SWAP CONTROLLER (MAX5042 Only) Hot-Swap UVLO Threshold Hot-Swap UVLO Hysteresis Hot-Swap UVLO Resistance Startup Delay HSEN Turn-Off Delay HSOK Output-High Leakage Current HSEN Reference Threshold ...
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... TEMPERATURE (°C) _______________________________________________________________________________________ Typical Operating Characteristics HOT-SWAP STARTUP DELAY vs. TEMPERATURE 175 170 165 160 155 150 125 -50 - TEMPERATURE (°C) MAX5042 toc04 32 V HSGATE 5V/div HSDRAIN 20V/div HSOK 27 20V/div 100kΩ PULLUP 26 OV ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller (V = 20V +25°C, unless otherwise noted.) POSINPWM A MAXIMUM DUTY CYCLE vs. TEMPERATURE MEASURED AT XFRMRL 46 -50 - ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller (V = 20V +25°C, unless otherwise noted.) POSINPWM A CURRENT-LIMIT THRESHOLD vs. TEMPERATURE 160 158 156 154 152 150 -50 - 100 TEMPERATURE (°C) ...
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... Source Connection for the Internal Low-Side Power MOSFET. Connect SRC to PWMPNEG with a low-value resistor for current limiting. Low-Side Connection for the Isolation Transformer Hot-Swap Controller Positive Input Supply (MAX5042 Only). Connect POSINHS along with POSINPWM to the most positive rail of the input supply. Pin Description ...
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... NEGIN provides the hot-swap circuit’s most negative connection. NEGIN is at the same potential as the IC substrate. Hot-Swap Gate (MAX5042 Only). Connect HSGATE to the gate of the external hot- swap MOSFET. Hot-Swap MOSFET Drain Sense (MAX5042 Only). Connect HSDRAIN to the drain of the external hot-swap MOSFET ...
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... QHS falls at a rate of approximately 10V/ms, drawing a current load from the backplane of approxi- mately 1A for each 100µ MAX5042’s PWM block is prevented from starting up until the QHS MOSFET is fully enhanced. After QHS completely turns on and the voltage across capacitor C ...
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... MAX5042/MAX5043 package. When REG15 is externally powered, the internal 15V regulator is disabled. Figures 3 and 4 show the block diagrams of the MAX5042 and MAX5043, respectively. The power-OK signals from the hot-swap section, regulators, thermal shutdown, and UVLO combine to generate the internal shutdown signal SHDN ...
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... CSS 7.5V 35 PWMNEG PWMNEG 13 PWMSD R Q UVLO S 32 CSOUT 25 POSINHS 840kΩ 27 HSEN 35kΩ NEGIN (29) Figure 3. Block Diagram of the MAX5042 Power IC 14 ______________________________________________________________________________________ REG15 OK OVT REG15 (15V) REG9 OK REG9 REF REG5 OK REF OK (9V) (1.25V) UVLO 7.5V "1" PWMNEG R LEADING- ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller MAX5043 41 REG15 39 REG5 REG5 (5V) REG5 OK 38 REG9 3 RCFF 5V IFLT 80µA OVRLD 11 FLTINT 2.3V/1.6V 4 RAMP CPWM 5 OPTO 5V 32µA 6 CSS 7.5V ...
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... R DRVDEL where t DRVDEL of PPWM to the switching of the internal power MOSFETs. The MAX5042/MAX5043 are multimode PWM power ICs supporting both voltage and current-mode control. Voltage-Mode Control and the PWM Ramp Soft-Start For voltage-mode control, the feed-forward PWM ramp is generated at RCFF. From RCFF connect a capacitor to PWMNEG and a resistor to POSINPWM ...
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... SP turns ratio. Current-Sense Amplifier and Current-Mode Control The MAX5042/MAX5043 can also be programmed for current-mode control (see Figure 6). This control method offers beneficial advantages for certain appli- cations. Current-mode control reduces the order of the output filter, allowing easier control-loop compensation. ...
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... The integration of thermal shutdown and the power MOSFETs result in a very robust power circuit. ) The MAX5042 integrates a PWM power IC with a hot- FLTINT swap controller. The design allows a power supply built around the MAX5042 to be safely hot-plugged into a live backplane without causing a glitch on the power- supply rail ...
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... R14 R20 C9 C12 10kΩ 10kΩ 220pF 0.1µF C20 0.1µF 100V NEGIN Figure 7. MAX5042 Typical Application Circuit (48V Power Supply with Hot-Swap Capability) ______________________________________________________________________________________ Table 1. MAX5042 Suggested External Hot-Swap MOSFETs MAXIMUM HSLR POSINPWM DRNH UVLO RAMP RCFF ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller V IN+ 32V TO 72V C1 R12 220µF 200kΩ 100V 1% R22 10kΩ R13 1MΩ C25 0.68µF C13 100V 1µF 0.22µF R14 R20 C9 C12 10kΩ 10kΩ 220pF 0.1µF PWMNEG ...
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... Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller TOP VIEW N.C. 1 N.C. 2 RCFF 3 RAMP 4 OPTO 5 CSS 6 BST 7 MAX5042ATN DRVIN 8 PWMPNEG 9 RCOSC 10 FLTINT 11 SYNC 12 PWMSD 13 N. THIN QFN EXPOSED PADDLE CONNECTED TO NEGIN. ...
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Two-Switch Power ICs with Integrated Power MOSFETs and Hot-Swap Controller (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 ...