{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL594CDE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL594CDE4","canonicalUrl":"https://icboms.com/texas-instruments/TL594CDE4","factsUrl":"https://icboms.com/api/mcp/products/TL594CDE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL594CDE4 PWM controller, push-pull/buck/boost/flyback, 1 kHz–300 kHz switching, 97% max duty cycle, 7 V–40 V supply, 16-SOIC, tube.","salesMarkdown":"## PWM controller with 97% duty cycle ceiling The TL594CDE4 is a fixed-frequency PWM controller from Texas Instruments that handles step-up, step-down, and step-up/step-down topologies including buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull. Its 1 kHz to 300 kHz switching range lets you tune the power stage for magnetics size versus switching loss — 50 kHz for a through-hole transformer in a legacy supply, 200 kHz for a planar magnetics board in a compact converter. ## Supply rail and drive capability Operates from a 7 V to 40 V supply, which means it can run off a regulated 12 V rail or a raw 24 V industrial bus without a pre-regulator. The two transistor-driver outputs deliver complementary or single-ended drive with a 97% maximum duty cycle — useful for push-pull and forward converters where you need to squeeze the last few percent of output voltage from a given transformer turns ratio. ## Control features for loop tuning Includes dead-time control and frequency control pins — you can program the dead time externally to prevent cross-conduction in half-bridge or push-pull stages, and synchronise the oscillator frequency with an external resistor and capacitor. No clock sync input, so for multi-phase systems you'd need a master oscillator feeding the RT/CT pin. That's commercial temperature range — fine for bench supplies, office equipment, and indoor industrial controls. Not rated for -40 °C cold-crank or under-hood automotive, so if the board lives in a heated cabinet it's fine; if it's on a forklift in a freezer warehouse, budget for a wider-temp variant. No official second-source cross-reference is carried in the listing, but the TL594 family has been second-sourced historically — verify pin-compatibility against your BOM's specific date-code requirements.","metaTitle":"TL594CDE4 PWM Controller, 1 kHz–300 kHz, 97% Duty Cycle","metaDescription":"TL594CDE4 PWM controller from TI. Switching frequency 1 kHz–300 kHz, max duty cycle 97%, supply 7 V–40 V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Dead Time Control, Frequency Control","Duty Cycle (Max)":"97%","Number of Outputs":"2","Serial Interfaces":"-","Base Product Number":"TL594","Output Configuration":"Positive","Frequency - Switching":"1kHz ~ 300kHz","Operating Temperature":"0°C~70°C(TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-SOIC","Voltage - Supply (Vcc/Vdd)":"7V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e7f90ece3ceb8a04e3b238e384f44f54.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL594CDE4/alternatives.json"},"ai":{"faq":[{"question":"How does the TL594 compare to the TL494?","answer":"The TL594 is a functional upgrade to the TL494. Both are dual PWM controllers with similar pinouts, but the TL594 adds dead-time control and frequency control pins, and extends the maximum duty cycle to 97% versus the TL494's typical 45% per output. If your design uses the TL494 and you need tighter dead-time adjustment or a wider duty cycle, the TL594 is a drop-in candidate — confirm the pin-for-pin compatibility against your specific PCB layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL594CDE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL594CDE4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}