TPS92602BQPWPRQ1TPS9260x-Q1 Single- and Dual-Channel Automotive Headlight LED Driver
Features
1.Qualified for Automotive Applications
2.AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
3.Input Voltage: 4 V–40 V (45 V Abs. Max.)
4.Output Voltage: 4 V–75 V (80 V Abs. Max.)
5.Fixed-Frequency Current-Mode Controller With
Integrated Slope Compensation
6.Two Regulation Loops, Constant-Current Output
and Constant-Voltage Output of Each Channel
7.High-Side Current Sense:
– 150-mV or 300-mV Sense Voltage (EEPROM
Option)
– ±6-mV Offset (Achieving Approx. 4% or 2%
LED Current Accuracy)
8.Output Voltage Sense, Internal Voltage
Reference: 2.2 V ±5%
9.Integrated Low-Side NMOS-FET Driver: Peak
Gate-Drive Current Typ. 0.7 A
10.Frequency Synchronization
11.Both PWM Dimming and Analog Dimming
12.Diagnostic:
– High-Side Current (LED Current) Available as
Analog Output
– Open-LED and Short-to-GND Detection
– Shorted Output Protection
13.Internal Under- and Overvoltage Lockout
Applications
Automotive Headlight LED Driver
High-Brightness LED Applications
Description
The TPS9260x-Q1 family of devices is a singlechannel and dual-channel high-side-current LED
driver. With full protection and diagnostics, this family of devices is dedicated for and ideally suited to automotive front lighting. The base of each independent driver is a peak-current-mode boost controller. Each controller has two independent feedback loops, a current-feedback loop with a highside current-sensing shunt and a voltage-feedback loop with an external resistor-divider network. The controller delivers a constant output voltage or aconstant output current. The connected load determines whether the device regulates a constant output current (if the circuit reaches the current setpoint earlier than voltage set-point) or a constant output voltage (if the circuit reaches the voltage setpoint is reached first, for example, in an open-load condition).Each controller supports all typical topologies such asboost, boost-to-battery, SEPIC, or flyback.Uses of the high-side PMOS FET driver are for PWM dimming of the LED string and for cutoff in case of anexternal short circuit to GND to protect the circuit.Device Information(1)PART NUMBER SENSE-VOLTAGE
RANGE CHANNELS
TPS92601-Q1,
TPS92601B-Q1
15 mV–150 mV 1
TPS92601A-Q1(2) 30 mV–300 mV 1
TPS92602-Q1,
TPS92602B-Q1
15 mV–150 mV 2
TPS92602A-Q1(2) 30 mV–300 mV 2
