MAX5950ETJ+ Maxim Integrated Products, MAX5950ETJ+ Datasheet
MAX5950ETJ+
Specifications of MAX5950ETJ+
Related parts for MAX5950ETJ+
MAX5950ETJ+ Summary of contents
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... Programmable Switching Frequency from 100kHz to 1MHz o External Frequency Synchronization o SYNCIN and SYNCOUT Enable 180° Out-of-Phase Operation o Thermal Shutdown and Short-Circuit Protection o Space-Saving 5mm x 5mm, 32-Pin TQFN Package PART MAX5950ETJ+ +Denotes lead-free package. *EP = Exposed pad. Applications TOP VIEW Features Ordering Information PIN- ...
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PWM Controller with Hot-Swap ABSOLUTE MAXIMUM RATINGS IN to AGND.............................................................-0.3V to +24V HSENSE, PWM_IN to AGND........................-0. GATE to AGND.......................................................-0.3V to +30V GATE to PWM_IN ....................................................-0.3V to +6V PWREN, PWRFLT, MPWRGD, HUVLO, PGI, DCENO to AGND ................................................................-0.3V to ...
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PWM Controller with Hot-Swap ELECTRICAL CHARACTERISTICS (continued 12V PWM_IN IN PWM_IN C = 2.2µ -40°C to +85°C, unless otherwise noted. Typical values are at T REG ...
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PWM Controller with Hot-Swap ELECTRICAL CHARACTERISTICS (continued 12V PWM_IN IN PWM_IN C = 2.2µ -40°C to +85°C, unless otherwise noted. Typical values are at T REG ...
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PWM Controller with Hot-Swap ELECTRICAL CHARACTERISTICS (continued 12V PWM_IN IN PWM_IN C = 2.2µ -40°C to +85°C, unless otherwise noted. Typical values are at T REG ...
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PWM Controller with Hot-Swap (Typical Application Circuits PWM_IN = 2.2µ +25°C, unless otherwise noted.) A HOT-SWAP UNDERVOLTAGE LOCKOUT THRESHOLD vs. TEMPERATURE 1.30 1.27 1.24 1.21 1.18 1.15 -40 - TEMPERATURE ...
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PWM Controller with Hot-Swap (Typical Application Circuits PWM_IN = 2.2µ +25°C, unless otherwise noted.) A REG OUTPUT VOLTAGE vs. TEMPERATURE 5.15 5.10 5.05 5.00 4.95 4.90 4.85 -40 - TEMPERATURE ...
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PWM Controller with Hot-Swap (Typical Application Circuits PWM_IN = 2.2µ +25°C, unless otherwise noted.) A VALLEY CURRENT-LIMIT THRESHOLD vs. TEMPERATURE 140 R = 48.7kΩ ILIM 130 120 110 100 ...
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PWM Controller with Hot-Swap (Typical Application Circuits 2.2µ +25°C, unless otherwise noted.) A STARTUP SEQUENCING (FIGURE 1) 2ms/div PWREN SWITCHING FROM HIGH TO LOW STARTUP FAULT MAX5950 toc24a DCEN0 = DCENI1 = ...
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PWM Controller with Hot-Swap (Typical Application Circuits PWM_IN = 2.2µ +25°C, unless otherwise noted.) A SYNCHRONIZATION MAX5950 toc27 SYNCIN2 = SYNCOUT1 5V/div 200ns/div EFFICIENCY vs. LOAD CURRENT 100 ...
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PWM Controller with Hot-Swap PIN NAME 1 PWM_IN PWM Controller Input Voltage PWM UVLO Divider Center Point. Use an external divider to override the internal PWM UVLO divider. 2 PUVLO The rising threshold is set to 1.220V with 122mV ...
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PWM Controller with Hot-Swap PIN NAME Feedback Regulation Point. Connect to the center tap of a resistive divider from the converter output AGND to set the output voltage. The FB voltage regulates to the reference voltage. ...
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PWM Controller with Hot-Swap Table 1. PCIe ExpressModule Power-Supply Rail Requirements POWER RAIL SINGLEWIDE +12V Bulk Voltage Tolerance ±15% (max) Continuous 2.08A (max) Current Initial Hot-Plug 5000pF (max) Capacitance Input Capacitance 500µF (max) Notes For Table 1: 1. The ...
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PWM Controller with Hot-Swap The active-low power-enable input, PWREN, is internally pulled high. Pull PWREN low for at least 10ms for the hot-swap to commence. Connect PGI to the PGOOD outputs of the DC-DC converters. PGI is used to ...
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PWM Controller with Hot-Swap TRACKING PGI DCENO DCENI1 THRESH1 PGOOD1 DCENI2 THRESH2 PGOOD2 DCENI3 THRESH3 PGOOD3 STARTUP1 STARTUP2 STARTUP3 Figure 1. Tracking, STARTUP Sequencing, and PGOOD Sequencing Configurations Startup Sequencing (DCENI, THRESH) The DCENI input must be above V ...
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PWM Controller with Hot-Swap Power-Good Sequencing (PGOOD, SENSE) The PGOOD outputs and DCENI inputs can be daisy- chained to generate power sequencing. The PGOOD output is pulled high when the voltage at SENSE is above V (800mV typ). Connect ...
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PWM Controller with Hot-Swap n-Channel MOSFET Selection Select the external n-channel MOSFET according to the application’s current level. The MOSFET’s on-resis- tance (R ) should be chosen low enough to have DS(ON) a minimum voltage drop at full load ...
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PWM Controller with Hot-Swap Input-Capacitor Selection The discontinuous input current of the buck converter causes large input ripple currents, therefore the input capacitor must be carefully chosen to withstand the input ripple current and maintain the input voltage rip- ...
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PWM Controller with Hot-Swap 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 - TEMPERATURE (°C) Figure 5. Current-Limit Trip Point and R The 20µA current source, ILIM reference current, has a temperature coefficient ...
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PWM Controller with Hot-Swap OUT EA R4 REF GAIN CLOSED-LOOP (dB) GAIN Figure 6. Error Amplifier Compensation Circuit (Closed-Loop and Error-Amplifier Gain ...
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PWM Controller with Hot-Swap quency is higher than f , but lower than the closed- LC loop crossover frequency. The equations that define the error amplifier’s poles and zeroes (f and f ) are the same as before. However, ...
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PWM Controller with Hot-Swap PC Board Layout Guidelines Use the following guidelines to layout the switching voltage regulator: 1) Place the PWM_IN and DREG bypass capacitors close to the MAX5950 PGND pin. Place the REG bypass capacitor close to ...
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PWM Controller with Hot-Swap PWM_IN PUVLO LDO REG 1.220V EN 0.8V THERMAL REF SHUTDOWN RES REF DIGITAL CLK SOFT-START FB COMP EN SYNCIN RAMP RT OSC SYNCOUT ______________________________________________________________________________________ Simplified Block Diagrams (continued) PWM CONTROLLER DCENI THRESH VREGOK OVL E/A ...
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PWM Controller with Hot-Swap +3.3VAUX (SHORT PIN) +12V (SHORT PIN) PRSNT IN HUVLO PWREN PWREN PWRFLT PWRFLT MPWRGD MPWRGD THRESH GND PUVLO PGI DCENO PCIe EXPRESSMODULE SLOT THRESH PUVLO 24 ______________________________________________________________________________________ PCIe EXPRESSMODULE (TRACKING GATE HSENSE PWM_IN ...
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PWM Controller with Hot-Swap +3.3VAUX (SHORT PIN) +12V (SHORT PIN) PRSNT IN HUVLO PWREN PWREN PWRFLT PWRFLT MPWRGD MPWRGD THRESH GND PUVLO PGI DCENO PCIe EXPRESSMODULE SLOT THRESH PUVLO ______________________________________________________________________________________ Typical Operating Circuits (continued) PCIe EXPRESSMODULE (STARTUP SEQUENCING) C ...
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PWM Controller with Hot-Swap +3.3VAUX (SHORT PIN) +12V (SHORT PIN) PRSNT IN HUVLO PWREN PWREN PWRFLT PWRFLT MPWRGD MPWRGD THRESH GND PUVLO PGI DCENO PCIe EXPRESSMODULE SLOT THRESH PUVLO 26 ______________________________________________________________________________________ Typical Operating Circuits (continued) PCIe EXPRESSMODULE (PGOOD SEQUENCING) ...
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PWM Controller with Hot-Swap (SHORT PIN) +3.3VAUX +12V (SHORT PIN) PRSNT IN HUVLO PWREN PWREN PWRFLT PWRFLT MPWRGD MPWRGD GND THRESH PUVLO PGI DCENO PCIe EXPRESSMODULE SLOT ______________________________________________________________________________________ Typical Operating Circuits (continued) USING EXTERNAL CURRENT-SENSE RESISTOR C IN GATE ...
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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. 28 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products M. Quijano Package Information is a registered trademark of Maxim Integrated Products, Inc ...