AN709 VISHAY [Vishay Siliconix], AN709 Datasheet
AN709
Related parts for AN709
AN709 Summary of contents
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... Si9976DY to operate over an input voltage range The device is specified over the industrial temperature range (–40 to +85 C). Bootstrap Regulator Under Voltage V Lockout 1 DD Charge Pump 250 ns Delay 300 ns Delay Q AN709 Vishay Siliconix , powers the FAULT output CAP 2 C Boot Half-Bridge ...
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... AN709 Vishay Siliconix The Si9976DY operates from a single supply voltage dc. This voltage feeds both the bootstrap and the low-voltage regulators. The bootstrap voltage regulator charges the bootstrap capacitor, while the low-voltage regulator drops the input voltage to a nominal V the low-side logic and the output drive for the low-side MOSFET ...
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... The transition should take place in less than 300 ns for a transition to V+, and 200 ns for a transition to ground. Detection of a short circuit condition latches both outputs off and the fault line high. The outputs are re-enabled by a rising edge on the enable line, EN. AN709 Vishay Siliconix G 1 High Side ...
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... AN709 Vishay Siliconix Window GND Window 300 ns 200 ns The FAULT output goes high whenever the Si9976DY detects an output short circuit undervoltage condition. The DD detection of the short circuit inhibits operation and sets a fault latch which is cleared by a rising edge on the enable line, EN. ...
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... MOSFET decoupling capacitors from ground. Make sure that decoupling capacitors on MOSFETs are connected directly across the MOSFET pair, high-side drain to low-side source to maximize their effectiveness at reducing noise (see Figure 7). IN4148 or Equivalent Figure 6. External Bootstrap Diode AN709 Vishay Siliconix Si9976 IN EN Si9976 IN EN resistor can be C ...
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... AN709 Vishay Siliconix Si9976 G 2 GND 0. CAP GND FLT V CC Si9976DY FAULT OUT 0.01 F 0.01 F 0.1 F Figure 8 Full-Bridge Configuration with the Si9976DY and the Si9945DY www ...
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... PC board space. The Si9976DY, when used with one of the dual n-channel LITTLE FOOT power MOSFETs, provides a very flexible approach to power switching in dc motor drives. , provides a low GND V FAULT GND V FAULT Figure 9 Typical PC Board Layout (Scale 1:1) AN709 Vishay Siliconix ...
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