<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Wed May 20 21:11:58 UTC 2026 -->
<xs:schema xmlns:trin="http://www.trinitycapital.com/20260520" elementFormDefault="qualified" targetNamespace="http://www.trinitycapital.com/20260520" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="trin-20260520_lab.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="trin-20260520_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="trin-20260520_def.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef"/>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef/2025" schemaLocation="https://xbrl.sec.gov/cef/2025/cef-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef-pre/2025" schemaLocation="https://xbrl.sec.gov/cef/2025/cef-2025_pre.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:element name="RisksRelatedToTheNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="trin_RisksRelatedToTheNotesMember"/>
<!-- [WMV7][oOo4UHxRouxRCbx/j8omcBBmtY1jpOBK+b37y0TPvXxfvOFujWxmqT8J+SsdBfmtfxGJVdMWjtnzPgIRI3YYTAuUm7suFSClIWVRfJjnIzY0nHu+wKn0EJWK84I4Y8f1iD8tUTkBmrLmoujIhBd/P9Yfqi+4bikpFtrK8JjbJMNPqZNq783+/WeOmqPUYFN2/rQkyceun5NiO0jVg5uTci3IV50DzgbSg/YGcK9uW5zj4J4S4LG/moisnjr82o/d14rWGdRx7m9KX59ZpPDVSDw0BhyRcHCQR4Yyj0Ocsq5KIKg4C75F2JCOqsp7Y8XiiAHXiN3czJ3iKg0dwVSd+eh06A==] CSR-->
  <xs:element name="CommonStocksMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="trin_CommonStocksMember"/>
</xs:schema>
