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Texas Instruments UCC28220D — Analog & Data Acquisition
Texas Instruments

UCC28220D PWM Controller, 200kHz-2MHz, 75% Duty Cycle

MPNUCC28220D
End of Life

Texas Instruments UCC28220D PWM controller, step-up/step-down function, flyback and forward converter topology, 200kHz-2MHz switching frequency, 75% max duty cycle, 2 transistor-driver outputs, 8.4V-14.5V supply, -40°C to 105°C, 16-SOIC surface mount.

$5.92Ref. price · indicative, final on quote
UCC28220D datasheet
Packaging16-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

UCC28220D Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))8.4V ~ 14.5V
Frequency200kHz ~ 2MHz
Number of outputs2
Output phases1
Duty cycle75%
Operating temperature-40°C ~ 105°C (TA)
PackageTube
FunctionStep-Up/Step-Down
TopologyFlyback, Forward Converter
Clock syncNo
Case16-SOIC (0.154\", 3.90mm Width)
Control featuresRamp, Soft Start
Output configurationPositive
Synchronous rectifierNo

Product details

What this PWM controller does — and where it fits

The UCC28220D is a PWM controller for step-up/step-down applications, supporting flyback and forward converter topologies. It provides two transistor-driver outputs with a 75% maximum duty cycle and a 200kHz to 2MHz switching frequency range.

Switching frequency and duty cycle — what they mean for the transformer

The 200kHz to 2MHz range lets you trade off transformer size against switching losses. At the low end, you get wider flux swing and simpler magnetics; at 2MHz, the transformer shrinks but you need careful layout and snubbing. The 75% maximum duty cycle is a practical ceiling for flyback and forward converters — it limits the off-time available for resetting the transformer core, so the turns ratio and output voltage range are constrained accordingly. If you need higher duty cycle for a wide-input design, this part isn't the fit.

Active status and sourcing posture

It is ROHS3 compliant, so it passes EU and most global environmental requirements without an exemption.

Frequently asked questions

What is the typical application of UCC28220D?

Typical applications include isolated flyback and forward converter power supplies for industrial control, telecom infrastructure, and automotive auxiliary converters where the controller operates on the primary side with a bias supply of 8.4V to 14.5V.

Is UCC28220D RoHS compliant?

Yes, the UCC28220D is ROHS3 compliant — no restricted substances above the threshold limits, no exemption needed.

What is the maximum duty cycle of UCC28220D?

The maximum duty cycle is 75%, which limits the on-time relative to the switching period and constrains the transformer turns ratio in flyback and forward designs.

What are cross references for UCC28220D?

A close functional peer is the UCC2806DWTR, which also supports flyback and forward topologies with two transistor-driver outputs, but it runs at a lower 47kHz fixed frequency, has a 50% duty cycle limit, and includes synchronous rectification. The UCC28220D offers a wider frequency range and higher duty cycle, so they are not drop-in replacements — evaluate the switching frequency and duty cycle requirements before substituting.