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UCC28061D Datasheet(PDF) 6 Page - Texas Instruments

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Part # UCC28061D
Description  Natural Interleaving??Transition-Mode PFC Controller With Improved Audible Noise Immunity
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC28061D Datasheet(HTML) 6 Page - Texas Instruments

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UCC28061
SLUS837 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At VCC = 16 V, AGND = PGND = 0 V, VINAC = 3 V, VSENSE = 6 V, HVSEN = 3 V, PHB = 5 V, RTSET = 133 kΩ; all voltages
are with respect to GND, all outputs unloaded, –40°C < TJ = TA < +125°C, and currents are positive into and negative out of
the specified terminal, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PULSE-WIDTH MODULATOR
KTL
On-time factor, phases A and B
VINAC = 3.2 V, VSENSE = 5.8 V(3)
3.6
4.0
4.4
µs/V
VINAC = 3.2 V, VSENSE = 5.8 V,
KTLS
On-time factor, single-phase, A
7.2
8
8.9
PHB = 0 V(3)
Phase B to phase A on-time matching
VSENSE = 5.8 V, VINAC = 3.2 V
–6%
6%
COMP = 0.25 V, VINAC = 1 V
1.2
2
2.7
Zero-crossing distortion correction additional on
µs
time
COMP = 0.25 V, VINAC = 0.1 V
12.6
20
29
PHB threshold falling, to single-phase operation
To GDB output shutdown VINAC = 1.5 V
0.7
0.8
0.9
V
PHB threshold rising, to two-phase operation
To GDB output running VINAC = 1.5 V
0.9
1.0
1.1
T(min)
Minimum switching period
RTSET = 133 kΩ
(3)
1.7
2.2
2.5
µs
PWM restart time
ZCDA = ZCDB = 2 V(4)
165
200
265
THERMAL SHUTDOWN
Thermal shutdown temperature
TJ, temperature rising
(5)
+160
°C
Thermal restart temperature
TJ, temperature falling
(5)
+140
(3)
Gate drive on-time is proportional to VCOMP – 125 mV. The on-time proportionality factor, KT, is different in two-phase and single-phase
modes. The on-time factor, KT, scales linearly with the value of RTSET. The minimum switching period is proportional to RTSET.
(4)
An output on-time is generated at both GDA and GDB if both ZCDA and ZCDB negative-going edges are not detected for the restart
time. In single-phase mode, the restart time applies for the ZCDA input and the GDA output.
(5)
Thermal shutdown occurs at temperatures higher than the normal operating range. Device performance above the normal operating
temperature is not specified or assured.
6
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): UCC28061


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