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LP87702-Q1

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Dual buck converter and 5-V boost with diagnostic functions

Data sheet
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Dual buck converter and 5-V boost with diagnostic functions

LP87702-Q1

ACTIVE
Data sheet Order now

Product details

Parameters

Regulated outputs (#) 3 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 3.5 TI functional safety category Functional Safety Quality-Managed Step-down DC/DC controller 0 Step-down DC/DC converter 2 Step-up DC/DC controller 0 Step-up DC/DC converter 1 LDO 0 Iq (Typ) (mA) 27 Features Dynamic Voltage Scaling, Enable, Enable Pin, I2C Control, Over Current Protection, Power Good, Power Sequencing, Power Supply and System Monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Automotive Processor name AWRxxx, IWRxxx Processor supplier TI Shutdown current (Typ) (uA) 1 Configurability Factory programmable, Software configurable open-in-new Find other Multi-channel ICs (PMIC)

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Multi-channel ICs (PMIC)

Features

  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C, TA
  • FMEDA and Functional Safety Manual available to support your ASIL compliant system designs
  • Two High-Efficiency Step-Down DC/DC converters:
    • Maximum Output Current 3.5 A
    • 2-MHz, 3-MHz, or 4-MHz Switching Frequency
    • Auto PWM/PFM and Forced-PWM Operations
    • Output Voltage = 0.7 V to 3.36 V
  • 5-V Boost Converter With Bypass-Mode Option:
    • Maximum Output Current 600 mA
  • Two Inputs for External Voltage Monitoring
  • Two Programmable Power-Good Signals
  • Dedicated Reference Voltage for Diagnostics
  • Window Watchdog With Reset Output
  • External Clock Input to Synchronize Switching
  • Spread-Spectrum Modulation
  • Programmable Start-up and Shutdown Delays and Sequencing With Enable Signal
  • Configurable General Purpose Outputs (GPOs)
  • I2C-Compatible Interface Supporting Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)

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Description

The LP87702-Q1 helps meet the power management requirements of the latest platforms, particularly in automotive radar and camera and industrial radar applications. The device contains two step-down DC/DC converters, and a 5-V boost converter/bypass switch. To support safety critical applications. the device integrates two voltage monitoring inputs for external power supplies, and a window watchdog.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output current range for buck converters. The LP87702-Q1 uses remote voltage sensing to compensate IR drop between the converter output and the point-of-load, thus improving the accuracy of the output voltage.

Programmable start-up and shutdown sequences synchronized to the enable signal are supported, including general purpose digital outputs. During start-up and voltage change, the device controls the output slew rate for minimum output voltage overshoot and inrush current. This device contains one-time-programmable (OTP) memory. Each orderable part number has specific OTP settings for a given application. Details of the default OTP configuration for each orderable part number can be found in the technical reference manual.

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More information

Functional safety documents and other information are available. Request now
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LP87524B-Q1 ACTIVE Multiphase 4MHz, 4A/1.8V + 2.5A/2.3V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs This product is for LDO-based 5-V input radar systems.
LP87524J-Q1 ACTIVE Multiphase 4MHz, 4A/1.0V + 2.5A/1.8V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs This product is for LDO-free 5-V input radar designs.

Technical documentation

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Type Title Date
* Datasheet LP87702-Q1 Dual Buck Converter and 5-V Boost With Diagnostic Functions datasheet (Rev. B) Aug. 15, 2019
Technical article Improving industrial radar RF performance with low-noise, thermal-optimized power solutions Apr. 21, 2021
Application note The Benefits of FlexPower PMIC Devices (Rev. B) Nov. 23, 2020
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy levels Nov. 18, 2020
User guide Power Supply Design for xWR Radar Using LP87702K-Q1 Jun. 22, 2020
User guide LP87702-Q1 Technical Reference Manual (Rev. D) Apr. 09, 2020
User guide LP877020-Q1 Technical Reference Manual (Rev. A) Apr. 09, 2020
User guide LP877020-Q1 Configuration Guide Feb. 18, 2020
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters May 09, 2019
User guide Automated Parking System Reference Design Using 77-GHz mmWave Sensor Jan. 24, 2019
More literature Automotive mmWave sensors Jul. 10, 2018
User guide LP8770Q1EVM Evaluation Module User Guide (Rev. A) Jun. 13, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
299
Description

The AWR1843 BoosterPack™ plug-in module is an easy-to-use 77GHz mmWave sensor evaluation board for the single-chip AWR1843 device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.

The BoosterPack™ contains everything required to start developing software for on-chip (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interfact to car units
View details
EVALUATION BOARD Download
document-generic User guide
299
Description

The IWR1843 BoosterPack™ plug-in module is an easy-to-use 77GHz mmWave sensor evaluation board for the single-chip IWR1843 device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.

The BoosterPack™ contains everything required to start developing software for on-chip (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interfact to car units
View details
EVALUATION BOARD Download
document-generic User guide
125
Description

The IWR6843 antenna-on-package (AoP) evaluation module (EVM) is an easy-to-use 60-GHz mmWave sensor evaluation platform used to evaluate the IWR6843AOP product, which integrates a wide field-of-view (FoV) antenna. This EVM enables access to point-cloud data and power over a USB interface.

This kit is (...)

Features
  • 60-GHz to 64-GHz mmWave sensor
  • 4 receive (RX) 3 transmit (TX) antenna with 120° azimuth field of view (FoV) and 120° elevation FoV
  • Direct interface with MMWAVEICBOOST and DCA1000
  • Supports 60-pin high-speed interface for host-controlling interface
  • Onboard capability for power-consumption monitoring
View details
EVALUATION BOARD Download
document-generic User guide
135
Description

IWR6843ISK is an easy-to-use 60 GHz mmWave sensor evaluation kit based on IWR6843 device with long-range antenna. The IWR6843ISK may be used to evaluate the IWR6843 and IWR6443 devices. This board enables access to point-cloud data and power over USB interface.

This kit is supported by mmWave tools (...)

Features
  • 60- to 64-GHz mmWave sensor
  • 4 receive (RX) 3 transmit (TX) antenna with 120° azimuth field of view (FoV) and 30° elevation FoV
  • Direct interface with MMWAVEICBOOST and DCA1000
  • Supports 60-pin high-speed interface for host-controlling interface
  • Onboard capability for power-consumption monitoring
View details
EVALUATION BOARD Download
document-generic User guide
125
Description

IWR6843ISK-ODS is an easy-to-use 60 GHz mmWave sensor evaluation kit based on IWR6843 device with wide field-of-view antenna. The IWR6843ISK-ODS may be used to evaluate the IWR6843 and IWR6443 devices. This board enables access to point-cloud data and power over USB interface.

This kit is supported (...)

Features
  • 60- to 64-GHz mmWave sensor
  • 4 receive (RX) 3 transmit (TX) antenna with 120° azimuth field-of-view (FoV) and 120° elevation FoV
  • Direct interface with MMWAVEICBOOST and DCA1000
  • Supports 60-pin high-speed interface for host-controlling interface
  • Onboard capability for power-consumption monitoring
View details
EVALUATION BOARD Download
document-generic User guide
199
Description
The LP8770Q1EVM is designed to meet the power management requirements of the latest processor and platform needs in automotive camera and radar applications. The device contains two step-down DC-DC converters and two linear regulators and general purpose digital output signal. The device is (...)
Features
  • Software Controller
  • USB-TO-I²C interface supports Standard (100kHz), Fast (400kHz), Fast+ (1MHz), and High-Speed (3.4 MHz) clock rate on the I²C bus
  • Versatile GUI: Output current measurement and status indicators
  • Console application allows running scripts.  Application can execute user specified scripts.
  • (...)
View details

Design tools & simulation

SIMULATION MODEL Download
SNVMBI8.ZIP (86 KB) - PSpice Model
SIMULATION MODEL Download
SNVMC02.ZIP (33 KB) - SIMPLIS Model
CALCULATION TOOL Download
Efficiency estimation tool for TPS6594-Q1, LP8756-Q1, LP8758, LP8770 and TPS650330-Q1
PEET-GUI — Efficiency estimator tool for Texas Instruments PMICs such as TPS6594-Q1, LP8756 family, LP8758 family and more.
Features
  • Efficiency data based on available measurement data
  • Automatic data plotting
  • Export efficiency curves
View details
SCHEMATIC Download
SNVR494.ZIP (324 KB)

Reference designs

REFERENCE DESIGNS Download
mmWave diagnostic and monitoring reference design
TIDEP-01025 — This reference design showcases the inbuilt autonomous monitoring functionality in mmWave radar sensors that enhances system efficiency by minimizing the processing load on the host. The design uses a SafeTI™ diagnostic library (SDL) to run diagnostic tests on programmable digital cores (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive 77-GHz radar module reference design with object data output
TIDA-01570 — The TIDA-01570 reference design is a complete solution for a 76 to 81 GHz radar sensor module. The power supplies on board convert the automotive battery input to the required rails for the radar AFE, processors and CAN-FD transceiver. After processing, object data is provided over the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive RFCMOS 77GHz radar module reference design with object data output over dual CAN FD
TIDA-020004 — This reference design is a solution for a 76 to 81 GHz radar sensor module. The power supplies on board convert the automotive battery input to the required rails for the radar AFE, processors and CAN FD transceiver. All of these functions are included in a small form factor PCB suitable for front (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Beamsteering for corner radar reference design
TIDEP-01021 — This reference design provides a foundation for blind-spot detection (BSD), cross-traffic alert (CTA), lane-change assist (LCA), and traffic-jam assist (TJA) applications using the AWR1843BOOST evaluation module (EVM). This design allows the estimation (in the azimuthal and elevation plane (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High efficiency, low-noise 5-V/3.3-V/1.8-V/1.1-V automotive display reference design
PMP22334 — This reference design is for an automotive display application with a customized form factor. The design demonstrates the excellent thermal performance of LM61460-Q1 with its HotRod™ QFN package as well as the low EMI aided by its spread spectrum feature. It generates four (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive mmWave radar gesture control reference design
TIDA-020011 — This reference design utilizes mmWave Radar and a full automotive power design to provide a sleek, simple solution to capture hand gestures and improve the experience of the driver. The evolution of the automobile has led to the desire for simpler and easier interaction with the ever increasing (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

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  • Ongoing reliability monitoring

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