Product Details
Product Description
Product Description
characteristic
Input voltage working range: 3V to 48V
Four high-precision current trap
DC current of each current well up to 200mA
Current matching degree is 1% (typical value)
When 152Hz LED is used to output PWM frequency, the dimming ratio is 32000:1
Maximum 16 bit LED dimming resolution when using I2C or PWM input
8 LED light strings can be configured
Automatic phase shifting PWM dimming
12 bit analog dimming
The switching frequency is 100kHz to 2.2MHz
Boost spread spectrum function can reduce EMI
Boost synchronous input, the boost switch frequency can be set through the external clock
Up to 48V VOUT boost or SEPIC DC/DC controller
The switching frequency is 100kHz to 2.2MHz
Boost spread spectrum function can reduce EMI
Boost synchronous input, the boost switch frequency can be set through the external clock
Multiple fault diagnosis functions
explain
TPS92390 is an automotive type efficient LED driver with boost controller. Four high-precision current wells support automatic adjustment of phase shift according to the number of channels used. Can be passed through I ² The C interface or PWM input controls the LED brightness globally.
The boost controller has adaptive output voltage control based on LED current well margin voltage. This feature can adjust the boost voltage to the lowest level required under all conditions, thus minimizing power consumption. With a wide range of adjustable frequencies, the TPS92390 avoids interference in the AM RF band.
The TPS92390 supports built-in hybrid PWM dimming and analog current dimming to reduce EMI, extend LED life, and improve overall optical efficiency.
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