Chapter 18 Gate Drive Unit (GDU2PHV2)MC9S12ZVMB Family Reference Manual Rev. 1.3NXP Semiconductors 57918.2.6.1 GLS[1:0] — Low-Side Source PinsThese pins are the low-side source connections for the low-side power FETs. The pins are the powerground pins used to return the gate currents from the low-side power FETs.18.2.6.2 AMPP — Current Sense Amplifier Non-Inverting Input PinThe pin is the non-inverting input to the current sense amplifier.18.2.6.3 AMPM — Current Sense Amplifier Inverting Input PinThe pin is the inverting input to the current sense amplifiers.18.2.6.4 AMP — Current Sense Amplifier Output PinThe pin is the output of the current sense amplifier. At the MCU level this pin is shared with an ADCchannel. For ADC channel assignment, see MCU pinout section.18.2.6.5 CP — Charge Pump Output PinThis pin is the switching node of the charge pump circuit. The supply voltage for charge pump driver isthe output of the voltage regulator VVLS . The output voltage of this pin switches typically between 0V and11V.18.2.6.6 VCP — Charge Pump Input for High-Side Driver SupplyThis pin is the charge pump input for the high-side FET pre-driver supply VBS[2:0].18.2.6.7 VSUP — Battery Voltage Supply Input PinThis pin should be connected to the battery voltage. It is the input voltage to the integrated voltageregulator. The output of the voltage regulator is pin VLS_OUT.18.2.6.8 VLS_OUT — Voltage Regulator Output PinThis pin is the output of the integrated voltage regulator. The ouput voltage is typically VVLS =11V. Theinput voltage to the voltage regulator is the VSUP pin.NOTEA 4.7uF or 10uF capacitor should be connected to this pin for stability of thethe voltage regulator output.18.3 Memory Map and Register DefinitionThis section provides the detailed information of all registers for the GDU2PH module.
