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TPS92682-Q1_V03

更新时间： 2024-11-06 02:51:27
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德州仪器 - TI /
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TPS92682-Q1 Dual-Channel Constant-Voltage and Constant-Current Controller with SPI Interface

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TPS92682-Q1
SLUSCX8B – MARCH 2019 – REVISED JULY 2020  
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.  
 
 
 
 
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