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Performance Specifications
11 SLUUC13A – May 2019 – Revised August 2019
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TPS92682EVM Constant Current Two-channel Boost and Boost-to-Battery
Table 3. TPS92682EVM-070 Boost Channel Performance Specifications (continued)
Parameter Test Conditions MIN TYP MAX UNITS
Number of LEDs N
LED
12
Output voltage V
OUT
LED+ to LED– 60
Maximum output current, I
LED
0.55 A
Maximum Output Power, P
OUT
25 W
PWM dimming frequency f
PWM
400 Hz
Systems Characteristics
Switching frequency F
SW
400 kHz
Dither modulation f
DM
400 600 Hz
Output over-voltage threshold V
O(OV)
60 V
4.2 Boost-to-Battery Current Regulator
The Table 4 provides the EVM electrical performance specifications for the boost-to-battery current
regulator, channel-2.
Table 4. TPS92682EVM-070 Boost-to-Battery Channel Performance Specifications
Parameter Test Conditions MIN TYP MAX UNITS
Input Characteristics
Voltage, V
IN
6.5 12 20 V
Maximum Input Current, I
IN
2 A
Output Characteristics
LED forward voltage, V
F(LED)
2.8 3.0 3.2 V
Number of LEDs N
LED
6
Output voltage V
OUT
LED+ to LED– 40 V
Maximum output current, I
LED
0.55 A
Maximum Output Power, P
OUT
15 W
PWM dimming frequency f
PWM
400 Hz
Systems Characteristics
Switching frequency F
SW
400 kHz
Dither modulation f
DM
400 600 Hz
Output over-voltage threshold V
O(OV)
40 V
5 Performance Data and Typical Characteristic Curves
Figure 2 and Figure 3 show the efficiency results for the boost and boost-to-battery vs. LED current, I
LED
.
The results show different number of series connected LEDs in the output. It is important to note that the
efficiency results include the power loss in the input EMI filter.