PROPRIETARY HYBRID METHOD COMBINES BOTH AVERAGE AND PEAK-MODE CONTROL METHODS
Analog IC - Other Type:
POWER FACTOR CONTROLLER
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
18 V
Input Voltage-Min:
11 V
Input Voltage-Nom:
12 V
JESD-30 Code:
R-PDSO-G16
JESD-609 Code:
e4
Length:
9.9 mm
Moisture Sensitivity Level:
1
Number of Functions:
1
Number of Terminals:
16
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
SOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.75 mm
Supply Current-Max (Isup):
8 mA
Supply Voltage-Max (Vsup):
18 V
Supply Voltage-Nom (Vsup):
12 V
Surface Mount:
YES
Switcher Configuration:
BOOST
Switching Frequency-Max:
100 kHz
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
1.27 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
3.9 mm
UCC29950DR Frequently Asked Questions (FAQs)
A good PCB layout for the UCC29950DR involves keeping the input and output stages separate, using a star-ground configuration, and placing the device close to the input capacitors. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
When selecting input capacitors for the UCC29950DR, consider the voltage rating, capacitance value, and ESR (Equivalent Series Resistance). A good starting point is to use low-ESR capacitors with a voltage rating of at least 1.5 times the maximum input voltage, and a capacitance value of 10-22uF.
The UCC29950DR can deliver up to 5A of output current, but this depends on the input voltage, output voltage, and thermal conditions. It's essential to check the device's thermal performance and adjust the output current accordingly to avoid overheating.
The UCC29950DR has a built-in overcurrent protection feature that can be enabled by connecting a resistor between the OC pin and GND. The resistor value determines the overcurrent threshold. A good starting point is to use a 1kΩ resistor, which sets the threshold to around 5A.
The EN (Enable) pin on the UCC29950DR is used to enable or disable the device. When the EN pin is pulled high, the device is enabled, and when it's pulled low, the device is disabled. This pin can be used to implement power sequencing or to shut down the device during fault conditions.
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UCC29950DR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
