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HIP6604 Datasheet(PDF) 5 Page - Intersil Corporation |
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HIP6604 Datasheet(HTML) 5 Page - Intersil Corporation |
5 / 11 page 5 Functional Pin Description UGATE (Pin 1), (Pin 16 QFN) Upper gate drive output. Connect to gate of high-side power N-Channel MOSFET. BOOT (Pin 2), (Pin 2 QFN) Floating bootstrap supply pin for the upper gate drive. Connect the bootstrap capacitor between this pin and the PHASE pin. The bootstrap capacitor provides the charge to turn on the upper MOSFET. A resistor in series with boot capacitor is required in certain applications to reduce ringing on the BOOT pin. See the Internal Bootstrap Device section under DESCRIPTION for guidance in choosing the appropriate capacitor and resistor values. PWM (Pin 3), (Pin 3 QFN) The PWM signal is the control input for the driver. The PWM signal can enter three distinct states during operation, see the three-state PWM Input section under DESCRIPTION for further details. Connect this pin to the PWM output of the controller. GND (Pin 4), (Pin 4 QFN) Bias and reference ground. All signals are referenced to this node. PGND (Pin 5 QFN Package Only) This pin is the power ground return for the lower gate driver. LGATE (Pin 5), (Pin 7 QFN) Lower gate drive output. Connect to gate of the low-side power N-Channel MOSFET. VCC (Pin 6), (Pin 9 QFN) Connect this pin to a +12V bias supply. Place a high quality bypass capacitor from this pin to GND. LVCC (Pin 10 QFN Package Only) Lower gate driver supply voltage. PVCC (Pin 7), (Pin 11 QFN) For the HIP6601A and the HIP6604, this pin supplies the upper gate drive bias. Connect this pin from +12V down to +5V. For the HIP6603A, this pin supplies both the upper and lower gate drive bias. Connect this pin to either +12V or +5V. PHASE (Pin 8), (Pin 14 QFN) Connect this pin to the source of the upper MOSFET and the drain of the lower MOSFET. The PHASE voltage is monitored for adaptive shoot-through protection. This pin also provides a return path for the upper gate drive. Description Operation Designed for versatility and speed, the HIP6601A, HIP6603A and HIP6604 dual MOSFET drivers control both high-side and low-side N-Channel FETs from one externally provided PWM signal. The upper and lower gates are held low until the driver is initialized. Once the VCC voltage surpasses the VCC Rising Threshold (See Electrical Specifications), the PWM signal takes control of gate transitions. A rising edge on PWM initiates the turn-off of the lower MOSFET (see Timing Diagram). After a short propagation delay [tPDLLGATE], the lower gate begins to fall. Typical fall times [tFLGATE] are provided in the Electrical Specifications section. Adaptive shoot-through circuitry monitors the LGATE voltage and determines the upper gate delay time [tPDHUGATE] based on how quickly the LGATE voltage drops below 2.2V. This prevents both the lower and upper MOSFETs from conducting simultaneously or shoot-through. Once this delay period is complete the upper gate drive begins to rise [tRUGATE] and the upper MOSFET turns on. Timing Diagram PWM UGATE LGATE tPDLLGATE tFLGATE tPDHUGATE tRUGATE tPDLUGATE tFUGATE tPDHLGATE tRLGATE HIP6601A, HIP6603A, HIP6604 |
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