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Texas Instruments LM5164 | Demoboard TIDA-010030
Accurate gauging and 50-µA standby current, 13S, 48-V Li-Ion battery pack reference design
Overview
| Topology | Buck Converter |
| Input voltage | 48-55 V |
| Switching frequency | 1000 kHz |
| Output 1 | 6 V |
| IC revision | A |
Description
This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over temperature and over current situations. The SOC gauging, based on bq34z100-g1, takes advantage of an impedance tracking algorithm and achieves as high as 2% accuracy at room temperature. Through a well-designed auxiliary power supply strategy and high efficiency, low quiescent current DC-DC converter LM5164, this design achieves 50-μA stand-by and 5-μA ship mode consumption, saving more energy and allowing longer shipping time and idle time. Also, this design supports a well running firmware, which helps to decrease product research time.
Features
- 2% battery pack SOC accuracy at room temperature
- 50-μA current consumption when in standby mode
- 15-μA current consumption when in shipping mode
- Robust and programmable protection, including: cell over voltage, cell under voltage, overcurrent discharge, short circuit, overtemperature and undertemperature
- Support 100-mA cell balancing
- High-side charging and discharging MOSFETs and support pre-discharge function
Typical applications
- Motor drives, drones
- e-bike battery pack / e-scooter battery pack / Mowing robot battery pack / UPS Li-Ion battery pack / Other over 10S battery pack applications
- Appliances, power and garden tools
- telecom
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | L(µH) | ISAT(A) | fres(MHz) | Size | Version | Pins | Mount | L(mm) | H(mm) | IR(mA) | Working Voltage(V (AC)) | Operating Temperature | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Downloads26 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]250 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0603 | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | |||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | Size0603 | VersionSMT | – | MountSMT | Length1.6 mm | Height0.8 mm | Rated Current200 mA | – | Operating Temperature -55 °C up to +125 °C | Impedance @ 100 MHz600 Ω | Maximum Impedance720 Ω | Maximum Impedance200 MHz | Rated Current 2850 mA | DC Resistance0.45 Ω | TypeWide Band | ||||
 | WE-PD SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | – | – | – | – | – | – | – | Inductance68 µH | Saturation Current1.6 A | Self Resonant Frequency9.4 MHz | Size1030 | VersionPerformance | Pins2 | MountSMT | Length10 mm | Height3 mm | Rated Current1100 mA | – | Operating Temperature -40 °C up to +150 °C | – | – | – | – | DC Resistance0.33 Ω | – | ||||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | Pins14 | MountTHT | Length35.56 mm | – | Rated Current3000 mA | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | TypeStraight | ||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | MountTHT | Length5.08 mm | – | Rated Current3000 mA | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | TypeStraight | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | Pins4 | MountTHT | Length10.16 mm | – | Rated Current3000 mA | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | TypeStraight |