TPS61378-Q1
TPS61378-Q1
www.ti.com
SLVSET0A – MAY 2020 – REVISED OCTOBER 2020
SLVSET0A – MAY 2020 – REVISED OCTOBER 2020
TPS61378-Q1 25-µA Quiescent Current Synchronous Boost Converter with Load
Disconnect
1 Features
3 Description
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•
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AEC-Q100 qualified for automotive applications
– Device temperature grade 1: –40°C to 125°C
ambient operating temperature range
Function Safety-Capable
– Documentation available to aid functional safety
system design
Flexible input and output operation range
– Input voltage range: 2.3 V to 14 V
– Programmable output voltage range: 4.0 V to
18.5 V
– 5 V, 5.25 V, 5.5 V fixed output options
– Programmable peak current limit: 1 A to 4.8 A
Avoid AM band interference and crosstalk
– Dynamically programmable switching
frequency: 200 kHz to 2.2 MHz
– Spread spectrum frequency modulation
– Optional clock synchronization
Minimize solution size for space constraint
applications
– Integrated LS/HS/ISO FET: RDS(ON) 50 mΩ/50
mΩ/100 mΩ
– Support up to 2.2 MHz with small L-C
Minimized light load and idle state current
consumption
– 25-µA Quiescent current into VIN pin
– 0.5-µA Shutdown current into VIN pin
– Selectable auto PFM and forced PWM mode
– True load disconnect during shutdown or fault
conditions
The TPS61378-Q1 is a fully-integrated synchronous
boost converter with load disconnect function
integrated. The input voltage covers from 2.3 V to 14
V, while the maximal output votlage up to 18.5 V. The
switching current limit is programmable from 1 A to
4.8 A. It consumes 25 uA quiescent current from Vin.
The TPS61378-Q1 employs the peak current mode
control with the switching frequency programmable
from 200 kHz to 2.2 MHz. The device works in fixed
frequency PWM operation in medium to heavy load.
There are two optional modes in light load by
configuring the MODE pin: Auto PFM mode and
Forced PWM to balance the efficiency and noise
immunity in light load. The switching frequency can be
synchronized to an external clock. The TPS61378-Q1
uses the spread spectrum of the internal clock for
more EMI friendly at FPWM mode. In addition, there
is an internal soft-start time to limit the inrush current.
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The TPS61378-Q1 has various fixed output voltage
versions to save the external feedback resistor. It
supports the external loop compensation so that the
stability and transient response could be optimized at
wider Vout/Vin range. It also integrates robust
protection features including the output short
protection, output over voltage protection and thermal
shutdown protection. The TPS61378-Q1 is available
in a 3-mm x 3-mm 16-pin QFN package with wettable
flank.
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
•
Integrated protection features
TPS61378QRTE
VQFN-16
3.0-mm x 3.0-mm
– Support VIN close to VOUT operation
– Input undervoltage lockout and output
overvoltage protection
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN
L1
– Hiccup output short circuit protection
– Power good indicator
– Thermal shutdown protection at 165°C
Higher than 90% efficiency under 0.8-A load from
3.3-V to 9-V conversion
SW
PG
C2
R1
VCC
BST
VIN
C6
OUT
VO
•
C1
C3
TPS61378-Q1
EN
VOUT
FREQ
R3
R6
R4
2 Applications
COMP
FB
C4
R2
C5
ILIM
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Advanced driver-assistance system (ADAS)
Automotive infotainment and cluster
Body electronics and lighting
MODE/SYNC
GND
R5
Emergency call (eCall)
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
Copyright © 2020 Texas Instruments Incorporated
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