In an action for child support that has been filed and served, the court may, without a hearing, make an order requiring a parent or parents to pay for the support of their minor child or children during the pendency of that action, pursuant to this chapter, the amount required by Section 4055 or, if the income of the obligated parent or parents is unknown to the applicant, then the minimum amount of support as provided in Section 11452 of the Welfare and Institutions Code.