TPS92682-Q1
SLUSCX8B – MARCH 2019 – RETVIPSSED92JU6L8Y22-Q0210
SLUSCX8B – MARCH 2019 – REVISED JULY 2020
www.ti.com
TPS92682-Q1 Dual-Channel Constant-Voltage and Constant-Current Controller
with SPI Interface
The device is programmable to operate in constant-
voltage (CV) or constant-current (CC) modes.
1 Features
•
•
AEC-Q100 grade 1 qualified
Functional Safety-Capable
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.
– Documentation available to aid functional safety
system design
Wide input voltage range: 4.5 V to 65 V
± 4% LED current accuracy over –40°C to 150°C
junction temperature range
•
•
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.
•
•
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 versus 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
•
•
•
•
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.
•
•
Wettable flank with VQFN package
Device Information
2 Applications
PART NUMBER
TPS92682-Q1
PACKAGE (1)
VQFN (32)
HTSSOP (32)
BODY SIZE (NOM)
5.0 mm x 5.0 mm
11.0 mm x 6.1 mm
•
•
•
Automotive forward lighting
Emergency vehicles
General lighting
TPS92682-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
3 Description
The TPS92682-Q1 is a dual-channel, peak current-
mode controller with SPI communication interface.
VBAT
VOUT1
VIN
ISP1
GATE1
EN
VDD
VBAT
PWM1
VCC
PWM2
SSN
TPS92682
PGND
SCK
SPI
LH
GATE2
MISO
MOSI
ISP2
VOUT2
FAULT1
FAULT2
Typical Application
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Copyright © 2020 Texas Instruments Incorporated
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