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GS-R405 Fiches technique(PDF) 3 Page - STMicroelectronics |
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GS-R405 Fiches technique(HTML) 3 Page - STMicroelectronics |
3 / 5 page 3/5 ELECTRICAL CHARACTERISTICS (TA = 25 °C unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit ∆Vo/∆T Temperature Stability Vi = Vo+8V Io = 1A 0.2/1.6 mv/ °C Io Output Current Vi = Vo+8V 0.2 4 A IoL Current Limit Vi = Vo+8V 58 A Iisc Average Input Current Vi = 46V Output Shorted 0.1 0.2 A fs Switching Frequency Io = 1A 100 KHz SVR Supply Voltage Rejection fo = 100Hz Io =1A 4/12 mV/V Vr Ripple Voltage Io = 2A 25/150 mVpp tss Soft Start Time Vi = Vo+8V 10/35 ms Vinhl Low Inhibit Voltage 0.8 V Vinhh High Inhibit Voltage 2 5.5 V Iinhh High Inhibit Input Current Vinh = 5V 500 µA tcb Crow-bar Delay Time 5 µs Vrh* Reset High Level 5V Vrl* Reset Low Level Irl = 5mA Irl = 10mA 0.2 0.4 V trd* Reset Delay Time 100 ms Vcth Crowbar Intervention Threshold Vo•1.25 V ∆Vo Total Remote Sense Compensation 500 mV Rth Thermal Resistance Case to ambient 5 °C/W * GS-R405S only USER NOTES Input Voltage The recommended operating maximum DC input voltage is 46V inclusive of the ripple voltage. Remote Sensing The remote voltage sense compensation range is for a total drop of 500mV equally shared between the load connecting wires. It is a good practice to shield the sensing wires to avoid oscillation. Each sense input must be connected to its compan- ion output power pin when the remote sense capa- bility is not used (see fig. 1). Case Grounding The module case is isolated from the electrical circuit of the switching regulator. It can be grounded using the 4 corner pins. The PCB area below the module can be used as an effective sixth side shield against EMI. Thermal Characteristics The case-to-ambient thermal resistance of all the GS-R400 modules is about 5 °C/W. This produces a 50 °C temperature increase of the module surface for 10W of internal power dissipation. Depending on the ambient temperature and/or on the power dissipation, an additional heatsink or forced ventilation may be required. Input Impedance The module has an internal capacitor connected between the input pins in order to assure PWM stability. This capacitor cannot handle large values of high frequency ripple current and it can be per- manently damaged if the primary energy source impedance is not adequate. The use of an external low ESR, high ripple current capacitor located as close the module as possible is recommended. Suitable capacitors should have a RMS current capability of 2.5ARMS with a working voltage of 50 VDC and an ESR of 0,1 Ω at 100 kHz. When space GS-R400 FAMILY |
Numéro de pièce similaire - GS-R405 |
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Description similaire - GS-R405 |
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