PDF, 1.7 Mb, Revision: B, Datei veröffentlicht: Jun 16, 2017
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Design TPS61197
SLVSC25B – JULY 2013 – REVISED JUNE 2017 TPS61197 Single-String White-LED Driver for LCD TV
1 Features 3 Description The TPS61197 provides highly integrated solutions
for LCD TV backlighting. This device is a currentmode boost controller driving one WLED string with
multiple LEDs in series. The TPS61197 adjusts the
output voltage of the boost controller automatically to
provide only the minimum voltage required by the
LED string to generate the setting LED current,
thereby optimizing the efficiency of the driver. 1 8-V to 30-V Input Voltage
50-kHz to 800-kHz Programmable Switching
Frequency
Adaptive Boost Output to White-LED Voltage
High-Precision PWM Dimming Resolution up to
5000:1
Programmable Overvoltage Protection Threshold
at Output
Programmable Undervoltage Threshold at Input …
