A question about 6-step for X-NUCLEO-IHM16M1

[wcc689653]

• MC Workbench generates a 6 step_sensless code for the following board: 
• Type: 6-Step / Voltage Mode 
• Control: NUCLEO-G431RB 
• Power: X-NUCLEO-IHM16M1
• Motor: GimBal GBM2804H-100T 
• Code: pwmc-3pwm.c in middle-ware 

      Question: In each step, it looks like PWM-ch1 (High-side MOSFET)  and  Enable pin( Low-side MOSFET) turn on at the same step?  For example,in Case STEP_1, both "PWM_ch1(for U)"  and "pwm-en-U-pin" are set to high, why it will not cause short circuit?   

•  

/* pwmc-3pwm.c  6 steps DC brushless motor
/*_weak void ThreePwm_LoadNextStep( PWMC_ThreePwm_Handle_t * pHandle, int16_t Direction )*/
/* 372-442*/ 


 /* standard configuration */
  else 
  {
    if (pHandle->DemagCounter >= pHandle->_Super.DemagCounterThreshold )
    {
      pHandle->FastDemagUpdated = true;
      ThreePwm_ResetOCPolarity(pHandle);
      LL_TIM_GenerateEvent_COM( TIMx );
    }
    switch ( pHandle->_Super.NextStep )
    {
    case STEP_1:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_TIM_OC_SetCompareCH2 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH3 ( TIMx, 0 );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
      }
      break;
    case STEP_2:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_TIM_OC_SetCompareCH2 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH3 ( TIMx, 0 );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
      }
      break;
    case STEP_3:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH2 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_TIM_OC_SetCompareCH3 ( TIMx, 0 );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
      }
      break;
    case STEP_4:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH2 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_TIM_OC_SetCompareCH3 ( TIMx, 0 );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
      }
      break;
    case STEP_5:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH2 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH3 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
      }
      break;
    case STEP_6:
      {
        LL_TIM_OC_SetCompareCH1 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH2 ( TIMx, 0 );
        LL_TIM_OC_SetCompareCH3 ( TIMx, (uint32_t)pHandle->_Super.CntPh );
        LL_GPIO_ResetOutputPin( pHandle->pParams_str->pwm_en_u_port, pHandle->pParams_str->pwm_en_u_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_v_port, pHandle->pParams_str->pwm_en_v_pin );
        LL_GPIO_SetOutputPin( pHandle->pParams_str->pwm_en_w_port, pHandle->pParams_str->pwm_en_w_pin );
      }
      break;
    }	​