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TPS92692PWPR

high accuracy LED controller with spread spectrum frequency modulation and internal PWM Generator

Manufacturer:

TI
Mfr.Part #:

TPS92692PWPR
Datasheet:

TPS92692PWPR Datasheet (PDF)
Input voltage type:

DC/DC
Topology:

Boost, Buck, Buck-Boost, Cuk, Flyback, SEPIC
Vin (min) (V):

4.5
Vin (max) (V):

65
EDA/CAD Models:

Request Free CAD Models for TPS92692PWPR

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TPS92692PWPR General Description

The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance.

This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions.

Key Features

Wide Input Voltage: 4.5 V to 65 V
Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
Spread Spectrum Frequency Modulation for Improved EMI
Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
Compatible with Direct PWM Input with over 1000:1 Dimming Range
Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
TPS92692-Q1: Automotive Q100 Grade 1 Qualified

Specifications

Input voltage type	DC/DC	Topology	Boost, Buck, Buck-Boost, Cuk, Flyback, SEPIC
Vin (min) (V)	4.5	Vin (max) (V)	65
Vout (max) (V)	65	Vout (min) (V)	3
Iout (max) (A)	5	Iq (typ) (mA)	1.8
Features	Adjustable Switch Frequency, High Output Accuracy, Precision Dimming Control, Soft Start, Synchronization Pin, Thermal shutdown	Operating temperature range (°C)	-40 to 125
Dimming method	Analog, PWM	Number of channels	1
Rating	Catalog