See datasheet for actual packaging/pinout drawings


Package | PIN:

PW | 20


S (-40 to 105)

ECO Plan:

Green (RoHS & no Sb/Br)


Dual Interleaved PWM Controller with Programmable Max Duty Cycle

TI Store Price:

1 - 9 $ 5.17
10 - 24 $ 4.67
25 - 99 $ 4.29
100 - 100 $ 3.84

Adjust your quantity during checkout

Texas Instruments UCC28221PW

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

The UCC28220 has an UVLO turnon threshold of
10 V for use in 12-V supplies while UCC28221 has a turnon threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turnoff thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high-voltage 110-V internal JFET for easier start-up for the wider hysteresis UCC28221 version.

The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages. The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high-voltage pin spacing to meet UL1950 creepage clearance safety requirements.

View datasheet
View product folder
Order SummaryEdit >
Subtotal: $0.00
Shipping & Handling: -
Total (USD): $0.00