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

TPS92602-Q1 (ACTIVE)

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)
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    
75     75    
  Boost
Boost Controller
Buck
Buck-Boost
Flyback
Sepic    
  Analog
PWM    
  Inductive    
100     100    
600     600    
  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    

Companion parts

Part # Name Product Family Comments
TPS7A6650-Q1   Automotive, 150mA, High Voltage, Ultra Low Iq, Low Drop Out Regulator   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    
TPS7B6950-Q1   TPS7B6950-Q1 High-Voltage Ultra-Low IQ Low-Dropout Regulator/Fixed 5-V Output Voltage   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    
TPS7B4250-Q1   Automotive Low-Dropout Voltage-Tracking LDO   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    
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