SI9978 Vishay Siliconix, SI9978 Datasheet
SI9978
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SI9978 Summary of contents
Page 1
... H-Bridge or Dual Half-Bridge Operation • 20- to 40-V Supply • Static (dc) Operation DESCRIPTION The Si9978DW is an integrated driver for an n-channel MOSFET H-bridge. The mode control allows operation as either a full H-bridge driver or as two independent half-bridges. The DIR/PWM input configuration allows easy implementation of either sign/magnitude or anti-phase PWM drive schemes for full H-bridges ...
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... Si9978DW Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltage on pins 2-7 with respect to ground -0 Voltage on pin -0 Voltage on pins 17, 19, 21 -0.3 to +60 V Voltage on pins 18 RECOMMENDED OPERATING CONDITIONS + 100 SPECIFICATIONS Parameter Symbol Power Supply Voltage Range ...
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... Si9978DW Vishay Siliconix Limits - Min Typ Max -5 -0 100 110 85 115 100 120 600 CL/ FAULT FAULT FAULT ...
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... B This input determines whether the Si9978 functions as an H-bridge or as two independent half-bridges. When the MODE pin is at logic “1”, the Si9978 functions as an H-bridge, and when MODE is at logic “0”, it functions as two independent half-bridges. Pin 7: BRK When this input and MODE are at logic “ ...
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... Pin 24: V+ This is the only external power supply required for the Si9978DW, and must be the same supply used to power the H-bridge it is driving. The Si9978DW powers the low-voltage logic, low-side gate driver, and bootstrap/ charge pump circuits from self-contained voltage regulators which require only a bootstrap capacitor on the CAP pins. No voltage sensing circuitry monitors V+ directly ...
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... Si9978DW Vishay Siliconix APPLICATIONS S-60752—Rev. D, 05-Apr-99 6 FIGURE 1. Basic H-Bridge Circuit FaxBack 408-970-5600, request 70011 www.siliconix.com ...