Datasheet

90
87.5
85
82.5
80
77.5
75
90 100 110 120
130
Input Voltage (VAC)
46-V LED String
40-V LED String
35-V LED String
30-V LED String
25-V LED String
18-V LED String
Efficiency (%)
PWR503TPS92075EVM
J8
AC Source
J6
LED+
AMP Meter
L
N
LED Load
LED-
Triac
Dimmer
Performance Data and Typical Characteristic Curves – Configured as Buck-Boost www.ti.com
Figure 2. Dimming Wiring Diagram
5 Performance Data and Typical Characteristic Curves – Configured as Buck-Boost
Note: 18-V stack; ~8-W, 46-V Stack; ~14-W Only LED stack voltage changed, EVM design left intact for
all curves
5.1 Efficiency
Figure 3. TPS92075 Buck-Boost Efficiency (Input and Output Power Meter Used)
4
Using the TPS92075 Buck-Boost Converter SLVU813A–November 2012–Revised June 2013
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