Automotive 2 channel High side current sense switching mode LED driver - TPS92602-Q1

TPS92602-Q1 (ACTIVE)

Automotive 2 channel High side current sense switching mode LED driver

Description

The TPS9260x-Q1 family of devices is a single-channel 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 high-side current-sensing shunt and a voltage-feedback loop with an external resistor-divider network. The controller delivers a constant output voltage or a constant output current. The connected load determines whether the device regulates a constant output current (if the circuit reaches the current set-point earlier than voltage set-point) or a constant output voltage (if the circuit reaches the voltage set-point is reached first, for example, in an open-load condition).

Each controller supports all typical topologies such as boost, 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 an external short circuit to GND to protect the circuit.

Features

  • Qualified for Automotive Applications
  • 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
  • Input Voltage: 4 V–40 V (45 V Abs. Max.)
  • Output Voltage: 4 V–75 V (80 V Abs. Max.)
  • Fixed-Frequency Current-Mode Controller With
    Integrated Slope Compensation
  • Two Regulation Loops, Constant-Current Output and Constant-
    Voltage Output of Each Channel
  • High-Side Current Sense:
    • 150-mV or 300-mV Sense Voltage (EEPROM Option)
    • ±6-mV Offset (Achieving Approx. 4% or 2% LED Current
      Accuracy)
  • Output Voltage Sense, Internal Voltage Reference:
    2.2 V ±5%
  • Integrated Low-Side NMOS-FET Driver: Peak Gate-Drive
    Current Typ. 0.7 A
  • Frequency Synchronization
  • Both PWM Dimming and Analog Dimming
  • Diagnostic:
    • High-Side Current (LED Current) Available as Analog
      Output
    • Open-LED and Short-to-GND Detection
    • Shorted Output Protection
  • Internal Under- and Overvoltage Lockout

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Parametrics Compare all products in LED Lighting - Illumination

 
Input Voltage (Type)
Vin (Min) (V)
Vin (Max) (V)
Iout (Max) (A)
Vout (Min) (V)
Vout (Max) (V)
Regulated Outputs (#)
Topology
Dimming Method
Type
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS92602-Q1 TPS92601-Q1
DC/DC     DC/DC    
4     4    
40     40    
1.5     1.5    
4     4    
75     75    
2     1    
Boost
Boost Controller
Buck
Buck-Boost
Flyback
Sepic    
Boost
Boost Controller
Buck
Buck-Boost
Flyback
Sepic    
Analog
PWM    
Analog
PWM    
Inductive     Inductive    
100     100    
600     600    
Adjustable Switch Frequency
Enable/Shutdown
Soft Start
Synchronization Pin
Thermal Shutdown    
Adjustable Switch Frequency
Enable/Shutdown
Soft Start
Synchronization Pin
Thermal Shutdown    
Automotive     Automotive    
-40 to 125     -40 to 125    
28HTSSOP     20HTSSOP    
3.00 | 1ku     1.80 | 1ku    
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