Datasheet > 935306519518

935306519518

更新时间： 2024-09-18 05:56:19

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
132页	852K
描述
Power Supply Management Circuit

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935306519518 数据手册

UJA113x series

Buck/boost HS-CAN/(dual) LIN system basis chip

Rev. 2 — 5 July 2016

Product data sheet

1. General description

The UJA113x System Basis Chip (SBC) contains a fully integrated buck and boost

converter along with a number of features commonly found in the latest generation of

automotive Electronic Control Units (ECUs). It interfaces directly with CAN and LIN bus

lines, supplies the microcontroller, handles input and output signals and supports fail-safe

features including a watchdog and advanced ‘limp home’ functionality configurable via

non-volatile memory. The UJA113x is available in number of variants as detailed in

Section 3.

To satisfy the demand for SBCs that operate at low battery supply voltages and feature

low power dissipation, a switched mode power supply (SMPS) with automatic down (Buck

mode) or up conversion (Boost mode) has been integrated into the UJA113x. In Boost

mode, the SMPS of the UJA1131 and UJA1132 variants can continue supplying a

microcontroller during dips in the battery voltage, ensuring uninterrupted operation. The

boost stage of the UJA1135 and the UJA1136 has limited output current capability, and is

suitable for supplying the memory in a microcontroller to prevent information being lost.

The SMPS requires only a single external coil and some capacitors but no separate

semiconductors.

The UJA113x implements the classic CAN physical layer as defined in the current

ISO11898 standard (-2:2003, -5:2007, -6:2013). Pending the release of the upcoming

version of ISO11898-2:201x including CAN FD, additional timing parameters defining loop

delay symmetry are included. This implementation enables reliable communication in the

CAN FD fast phase at data rates up to 2 Mbit/s.

The UJA113xFD/x variants support ISO 11898-6:2013 and ISO 11898-2:201x compliant

CAN partial networking with a selective wake-up function incorporating CAN FD-passive.

CAN FD-passive is a feature that allows CAN FD bus traffic to be ignored in

Sleep/Standby mode. CAN FD-passive partial networking is the perfect fit for networks

that support both CAN FD and classic CAN communications. It allows normal CAN

controllers that do not need to communicate CAN FD messages to remain in partial

networking Sleep/Standby mode during CAN FD communication without generating bus

errors.

A number of configuration settings are stored in non-volatile memory. This makes it

possible to adapt the power-on and limp home behavior of the UJA113x to meet the

specific requirements of an application.

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