TPS92682-Q1 Dual channel constant voltage and constant current controller with SPI | TI.com

TPS92682-Q1
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Dual channel constant voltage and constant current controller with SPI

 

Description

The TPS92682-Q1 is a dual-channel, peak current-mode controller with SPI communication interface. The device is programmable to operate in constant-voltage (CV) or constant-current (CC) modes.

In CV mode, TPS92682-Q1 can be programmed to operate as two independent or dual-phase Boost voltage regulators. The output voltage can be programmed using an external resistor voltage divider, and a SPI-programmable 8-bit DAC.

In CC mode, the device is designed to support dual channel step-up or step-down LED driver topologies. LED current can be independently modulated using analog or PWM dimming techniques. Analog dimming with over 28:1 range is obtained using a programmable 8-bit DAC. PWM dimming of LED current is achieved either by directly modulating the PWM input pins with the desired duty cycle, or using a SPI-programmable 10-bit PWM counter. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92682-Q1 incorporates an advanced SPI-programmable diagnostic and fault protection mechanism including: cycle-by-cycle current limit, output overvoltage and undervoltage protection, ILED overcurrent protection, and thermal warning. The device also includes an open-drain fault indicator output per channel.

The TPS92682-Q1 includes an LH pin, when pulled high, initiates the limp home (LH) condition. In LH mode, the device uses a separate set of SPI-programmed registers.

Features

  • AEC-Q100 grade 1 qualified
  • Wide input voltage range: 4.5 V to 65 V
  • ± 4% LED current accuracy over –40°C to 150°C junction temperature Range
  • SPI communication interface
  • SPI programmable features:
    • Spread spectrum for Improved EMI
    • Soft-start timing
    • ILED current and output voltage settings
    • Current limit, overvoltage, fault-timer
    • Single vs dual phase
    • CV and CC mode configuration
  • Dual channel peak-current-mode (PCM) controller
  • Low Input offset rail-to-rail current sense amplifier
  • Analog dimming
  • External series FET PWM dimming with integrated P-channel driver interface
    • Over 1000:1 PWM dimming range
  • Open drain fault flag indicator per channel
  • Up to 1-MHz Programmable switching frequency with external clock synchronization capability
  • Comprehensive programmable fault protection circuitry
  • Wettable flank with VQFN package

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Parametrics

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Part number Order Topology Channels (#) Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Iq (Typ) (mA) LED current per channel (mA) Switching frequency (Max) (kHz) Operating temperature range (C) Features Applications Package Group Package size: mm2:W x L (PKG) Rating
TPS92682-Q1 Order now Boost Controller
Buck Controller
Buck-Boost Controller
Cuk Controller
Flyback Controller
Sepic Controller    
2     4.5     65     3     65     5     2.2     5000     1000     -40 to 125     Adjustable Switch Frequency
Fault Detection
Fault Diagnostic
LED Open Detection
LED Short to Ground Detection
Spread Spectrum
Synchronization Pin
Thermal Shutdown    
Adaptive Headlamp
Daytime Running
Fog
Headlamp
Position
Turn    
VQFN | 32     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     Automotive    
TPS92691-Q1 Order now Boost Controller
Buck Controller
Buck-Boost Controller
Cuk Controller
Flyback Controller
Sepic Controller    
1     4.5     65     3     65     5     1.5     5000     1000     -40 to 125     Adjustable Switch Frequency
Synchronization Pin
Thermal Shutdown    
Daytime Running
Fog
Headlamp
Position
Turn    
HTSSOP | 16     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     Automotive    
TPS92692-Q1 Order now Boost Controller
Buck Controller
Buck-Boost Controller
Cuk Controller
Flyback Controller
Sepic Controller    
1     4.5     65     3     65     5     1.8     5000     800     -40 to 125     Adjustable Switch Frequency
Fault Detection
LED Open Detection
LED Short to Ground Detection
Precision Dimming Control
Soft Start
Spread Spectrum
Synchronization Pin
Thermal Shutdown    
Adaptive Headlamp
Daytime Running
Fog
Headlamp
Position
Stop/Tail
Turn    
HTSSOP | 20     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     Automotive