LM5170-Q1 Controller Datasheet

LM5170-Q1 Datasheet PDF, Equivalent


Part Number

LM5170-Q1

Description

Multiphase Bidirectional Current Controller

Manufacture

etcTI

Total Page 30 Pages
PDF Download
Download LM5170-Q1 Datasheet PDF


LM5170-Q1
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
LM5170-Q1
SNVSAQ6B – NOVEMBER 2016 – REVISED JUNE 2019
LM5170-Q1 Multiphase Bidirectional Current Controller
1 Features
1 AEC-Q100 Qualified for Automotive Applications:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• 100-V HV-Port and 65-V LV-Port Max Ratings
• 1% Accurate Bidirectional Current Regulation
• 1% Accurate Channel Current Monitoring
• 5-A Peak Half-Bridge Gate Drivers
• Programmable or Adaptive Dead-Time Control
• Programmable Oscillator Frequency With Optional
Synchronization to External Clock
• Independent Channel Enable Control Inputs
• Analog and Digital Channel Current Control Inputs
• Programmable Cycle-by-Cycle Peak Current Limit
• HV and LV Port Overvoltage Protection
• Diode Emulation Prevents Negative Current
• Programmable Soft-Start Timer
• MOSFET Failure Detect at Start-Up and Circuit
Breaker Control
• Multiphase Operation Phase Adding or Dropping
2 Applications
• Automotive Dual-Battery Systems
• Super-Cap or Battery Backup Power Converters
• Stackable Buck or Boost Converters
Simplified Application Circuit
HV-Port
(48 V)
LV-Port
(12 V)
3 Description
The LM5170-Q1 controller provides the essential high
voltage and precision elements of a dual-channel
bidirectional converter for automotive 48-V and 12-V
dual battery systems. It regulates the average current
flowing between the high voltage and low voltage
ports in the direction designated by the DIR input
signal. The current regulation level is programmed
through analog or digital PWM inputs.
Dual-channel differential current sense amplifiers and
dedicated channel current monitors achieve typical
current accuracy of 1%. Robust 5-A half-bridge gate
drivers are capable of driving parallel MOSFET
switches delivering 500 W or more per channel. The
diode emulation mode of the synchronous rectifiers
prevents negative currents but also enables
discontinuous mode operation for improved efficiency
with light loads. Versatile protection features include
cycle-by-cycle current limiting, overvoltage protection
at both HV and LV ports, MOSFET failure detection
and overtemperature protection.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5170-Q1
TQFP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Channel Current Tracking ISETA Command
+10 V Bias
HO1 SW1 LO1 PGND VCC
VIN CSA1
VINX
CSB1
RAMP1
OVPA
LM5170-Q1
RAMP2
SYNCOUT
ISETD
SYNCIN
ISETA
DIR
EN1
EN2
HO2 SW2 LO2
IOUT1
IOUT2
IPK
OSC
AGND
OVPB
CSB2
CSA2
Copyright © 2016, Texas Instruments Incorporated
1
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.

LM5170-Q1
LM5170-Q1
SNVSAQ6B – NOVEMBER 2016 – REVISED JUNE 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings ............................................................ 6
7.3 Recommended Operating Conditions....................... 7
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics........................................... 7
7.6 Typical Characteristics ............................................ 12
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 16
8.3 Feature Description................................................. 17
8.4 Device Functional Modes........................................ 33
8.5 Programming........................................................... 38
9 Application and Implementation ........................ 40
9.1 Application Information............................................ 40
9.2 Typical Application .................................................. 48
10 Power Supply Recommendations ..................... 59
11 Layout................................................................... 60
11.1 Layout Guidelines ................................................. 60
11.2 Layout Examples................................................... 61
12 Device and Documentation Support ................. 64
12.1 Device Support...................................................... 64
12.2 Receiving Notification of Documentation Updates 64
12.3 Community Resources.......................................... 64
12.4 Trademarks ........................................................... 64
12.5 Electrostatic Discharge Caution ............................ 64
12.6 Glossary ................................................................ 64
13 Mechanical, Packaging, and Orderable
Information ........................................................... 64
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (June 2017) to Revision B
Page
• Added Table note to Recommended Operating Conditions table regarding LV-Port Boost mode ....................................... 7
• Changed ISETD PWM frequency MAX value from 100 to 1000 kHz in the Recommended Operating Conditions table ..... 7
• Changed IPK internal current source spec from 22.5 MIN to 24.375 and 27.5 MAX to 25.625 in the EC table .................. 9
• Added MIN and MAX values to IPKBuck spec, and IPKBoost spec values................................................................................. 9
• Changed Functional Block Diagram image. ........................................................................................................................ 16
• Changed term 1.1 mA to 1.1 µA in Equation 13 ................................................................................................................. 22
• Changed source current from 25 mA to 25 µA in Figure 25 ............................................................................................... 23
• Changed Figure 55 to correct the pin numbers for OVPA and OVPB ................................................................................ 48
Changes from Original (November 2016) to Revision A
Page
• Changed TQFP body size dimensions from: 6.00 mm × 6.00 mm to: 7.00 mm × 7.00 mm ................................................. 1
• Changed Figure 26 .............................................................................................................................................................. 25
• Changed Figure 40 and Figure 41 ....................................................................................................................................... 35
• Changed Figure 44............................................................................................................................................................... 37
• Changed Equation 28 .......................................................................................................................................................... 44
• Changed Equation 30 .......................................................................................................................................................... 44
• Changed Equation 36 .......................................................................................................................................................... 44
• Added text to Figure 53 ....................................................................................................................................................... 47
• Changed Figure 55 .............................................................................................................................................................. 48
• Changed examples values for the VLV_max, VHV_reg, and VHV_max .......................................................................................... 49
• Changed Equation 49........................................................................................................................................................... 50
• Changed Equation 50........................................................................................................................................................... 51
• Changed Equation 56........................................................................................................................................................... 52
• Changed Equation 59........................................................................................................................................................... 53
2 Submit Documentation Feedback
Product Folder Links: LM5170-Q1
Copyright © 2016–2019, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity LM5170-Q1 SNVSAQ6B – NOVEMBER 2016 – REVISED JUNE 2019 LM5170-Q1 M ultiphase Bidirectional Current Control ler 1 Features •1 AEC-Q100 Qualified for Automotive Applications: – Devic e Temperature Grade 1: –40°C to +125 °C Ambient Operating Range – Device HBM ESD Classification Level 2 – Devi ce CDM ESD Classification Level C4B • 100-V HV-Port and 65-V LV-Port Max Rat ings • 1% Accurate Bidirectional Curr ent Regulation • 1% Accurate Channel Current Monitoring • 5-A Peak Half-Br idge Gate Drivers • Programmable or A daptive Dead-Time Control • Programma ble Oscillator Frequency With Optional Synchronization to External Clock • I ndependent Channel Enable Control Input s • Analog and Digital Channel Curren t Control Inputs • Programmable Cycle -by-Cycle Peak Current Limit • HV and LV Port Overvoltage Protection • Dio de Emulation Prevents Negative Current • Programmable Soft-Start Timer • MOSFET Failure Detect at Sta.
Keywords LM5170-Q1, datasheet, pdf, etcTI, Multiphase, Bidirectional, Current, Controller, M5170-Q1, 5170-Q1, 170-Q1, LM5170-Q, LM5170-, LM5170, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)