<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by DFIN XBRL Schema Document - http://www.dfinsolutions.com/ - on 29-08-2026 01:51:13 PM -->
<!-- Copyright(c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<schema targetNamespace="http://www.tcw.com/20260904" elementFormDefault="qualified" xmlns:fnd="http://xbrl.sec.gov/fnd-cef/2025" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:tpaif="http://www.tcw.com/20260904" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:rr="http://xbrl.sec.gov/rr/2021" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:cef="http://xbrl.sec.gov/cef/2025" xmlns:xlink="http://www.w3.org/1999/xlink">
    <annotation>
        <appinfo>
            <link:linkbase>
                <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/N2" xlink:type="simple" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#N2"/>
                <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/RiskOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#RiskOnly"/>
                <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/SecurityOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#SecurityOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/cef/role/CoregistrantOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#CoregistrantOnly"/>
				<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
				<link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/N2">	
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#cef_AllCoregistrantsMember" xlink:label="AllCoregistrantsMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain" xlink:label="ClassOfStockDomain"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#cef_AllRisksMember" xlink:label="AllRisksMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_MarketsRiskMember" xlink:label="MarketsRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="MarketsRiskMember" order="1.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_CreditsRiskMember" xlink:label="CreditsRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="CreditsRiskMember" order="2.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_AssetBackedSecuritiesRiskMember" xlink:label="AssetBackedSecuritiesRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="AssetBackedSecuritiesRiskMember" order="3.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_PrivateCreditRiskMember" xlink:label="PrivateCreditRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="PrivateCreditRiskMember" order="4.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_ValuationRiskMember" xlink:label="ValuationRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="ValuationRiskMember" order="5.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_CounterpartyRiskMember" xlink:label="CounterpartyRiskMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="CounterpartyRiskMember" order="6.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_ClosedEndIntervalFundLiquidityRisksMember" xlink:label="ClosedEndIntervalFundLiquidityRisksMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="ClosedEndIntervalFundLiquidityRisksMember" order="7.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_IndustryRisksMember" xlink:label="IndustryRisksMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="IndustryRisksMember" order="8.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_UseOfLeverageRiskOfBorrowingByTheFundMember" xlink:label="UseOfLeverageRiskOfBorrowingByTheFundMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="UseOfLeverageRiskOfBorrowingByTheFundMember" order="9.0" />
					<link:loc xlink:type="locator" xlink:href="#tpaif_RisksRelatingToFundSRICStatusMember" xlink:label="RisksRelatingToFundSRICStatusMember"/>
					<link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AllRisksMember" xlink:to="RisksRelatingToFundSRICStatusMember" order="10.0" />
				</link:presentationLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/CoregistrantOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#cef_AllCoregistrantsMember" xlink:label="AllCoregistrantsMember"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/SecurityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain" xlink:label="ClassOfStockDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/RiskOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cef/2025/cef-2025.xsd#cef_AllRisksMember" xlink:label="AllRisksMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_MarketsRiskMember" xlink:label="MarketsRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="MarketsRiskMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_CreditsRiskMember" xlink:label="CreditsRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="CreditsRiskMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_AssetBackedSecuritiesRiskMember" xlink:label="AssetBackedSecuritiesRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="AssetBackedSecuritiesRiskMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_PrivateCreditRiskMember" xlink:label="PrivateCreditRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="PrivateCreditRiskMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_ValuationRiskMember" xlink:label="ValuationRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="ValuationRiskMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_CounterpartyRiskMember" xlink:label="CounterpartyRiskMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="CounterpartyRiskMember" order="6.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_ClosedEndIntervalFundLiquidityRisksMember" xlink:label="ClosedEndIntervalFundLiquidityRisksMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="ClosedEndIntervalFundLiquidityRisksMember" order="7.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_IndustryRisksMember" xlink:label="IndustryRisksMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="IndustryRisksMember" order="8.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_UseOfLeverageRiskOfBorrowingByTheFundMember" xlink:label="UseOfLeverageRiskOfBorrowingByTheFundMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="UseOfLeverageRiskOfBorrowingByTheFundMember" order="9.0"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_RisksRelatingToFundSRICStatusMember" xlink:label="RisksRelatingToFundSRICStatusMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="RisksRelatingToFundSRICStatusMember" order="10.0"/>
				</link:definitionLink>
				<link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
					<link:loc xlink:type="locator" xlink:href="#tpaif_MarketsRiskMember" xlink:label="MarketsRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_MarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Markets Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketsRiskMember" xlink:to="label_MarketsRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_CreditsRiskMember" xlink:label="CreditsRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_CreditsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Credits Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditsRiskMember" xlink:to="label_CreditsRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_AssetBackedSecuritiesRiskMember" xlink:label="AssetBackedSecuritiesRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_AssetBackedSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Asset Backed Securities Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetBackedSecuritiesRiskMember" xlink:to="label_AssetBackedSecuritiesRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_PrivateCreditRiskMember" xlink:label="PrivateCreditRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_PrivateCreditRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Private Credit Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrivateCreditRiskMember" xlink:to="label_PrivateCreditRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_ValuationRiskMember" xlink:label="ValuationRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_ValuationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Valuation Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ValuationRiskMember" xlink:to="label_ValuationRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_CounterpartyRiskMember" xlink:label="CounterpartyRiskMember"/>
					<link:label xlink:type="resource" xlink:label="label_CounterpartyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Counterparty Risk [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CounterpartyRiskMember" xlink:to="label_CounterpartyRiskMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_ClosedEndIntervalFundLiquidityRisksMember" xlink:label="ClosedEndIntervalFundLiquidityRisksMember"/>
					<link:label xlink:type="resource" xlink:label="label_ClosedEndIntervalFundLiquidityRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Closed end Interval Fund Liquidity Risks [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClosedEndIntervalFundLiquidityRisksMember" xlink:to="label_ClosedEndIntervalFundLiquidityRisksMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_IndustryRisksMember" xlink:label="IndustryRisksMember"/>
					<link:label xlink:type="resource" xlink:label="label_IndustryRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Industry Risks [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndustryRisksMember" xlink:to="label_IndustryRisksMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_UseOfLeverageRiskOfBorrowingByTheFundMember" xlink:label="UseOfLeverageRiskOfBorrowingByTheFundMember"/>
					<link:label xlink:type="resource" xlink:label="label_UseOfLeverageRiskOfBorrowingByTheFundMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Use of Leverage Risk of Borrowing by the Fund [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfLeverageRiskOfBorrowingByTheFundMember" xlink:to="label_UseOfLeverageRiskOfBorrowingByTheFundMember"/>
					<link:loc xlink:type="locator" xlink:href="#tpaif_RisksRelatingToFundSRICStatusMember" xlink:label="RisksRelatingToFundSRICStatusMember"/>
					<link:label xlink:type="resource" xlink:label="label_RisksRelatingToFundSRICStatusMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Risks Relating to Fund s RIC Status [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RisksRelatingToFundSRICStatusMember" xlink:to="label_RisksRelatingToFundSRICStatusMember"/>
				</link:labelLink>
			</link:linkbase>
		</appinfo>
	</annotation>
	<import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
	<import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
	<import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
	<import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
	<import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
	<import namespace="http://xbrl.sec.gov/cef/2025" schemaLocation="https://xbrl.sec.gov/cef/2025/cef-2025.xsd"/>
	<import namespace="http://xbrl.sec.gov/cef-pre/2025" schemaLocation="https://xbrl.sec.gov/cef/2025/cef-2025_pre.xsd"/>
	<import namespace="http://xbrl.sec.gov/fnd-cef-pre/2025" schemaLocation="https://xbrl.sec.gov/fnd/2025/fnd-cef-2025_pre.xsd"/>
	<element name="MarketsRiskMember" id="tpaif_MarketsRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CreditsRiskMember" id="tpaif_CreditsRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AssetBackedSecuritiesRiskMember" id="tpaif_AssetBackedSecuritiesRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="PrivateCreditRiskMember" id="tpaif_PrivateCreditRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="ValuationRiskMember" id="tpaif_ValuationRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CounterpartyRiskMember" id="tpaif_CounterpartyRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="ClosedEndIntervalFundLiquidityRisksMember" id="tpaif_ClosedEndIntervalFundLiquidityRisksMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="IndustryRisksMember" id="tpaif_IndustryRisksMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="UseOfLeverageRiskOfBorrowingByTheFundMember" id="tpaif_UseOfLeverageRiskOfBorrowingByTheFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="RisksRelatingToFundSRICStatusMember" id="tpaif_RisksRelatingToFundSRICStatusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
</schema>
