2.2-MHz wide VIN nonsynchronous boost, flyback, & SEPIC controller with dual random spread spectrum
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C TA
- Functional Safety-Capable
- Suited for wide input operating range car battery applications
- 3.5-V to 60-V Operating range (65-V abs max)
- 2.97-V to 16-V When BIAS = VCC
- Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
- Input transient protection up to 65 V
- Minimized battery drain
- Low shutdown current (IQ ≤ 2.6 µA)
- Low operating current (IQ ≤ 490 µA)
- Small solution size and low cost
- Maximum switching frequency of 2.2 MHz
- 12-Pin WSON package (3 mm × 2 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
- EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
- Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.5-A peak standard MOSFET driver
- Supports external VCC supply
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
- Integrated protection features
- Constant peak current limiting over input voltage
- Optional hiccup mode overload protection (see the Device Comparison Table)
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- Accurate ±1% accuracy feedback reference
- Programmable extra slope compensation
- Adjustable soft start
- PGOOD indicator
- Create a custom design using the LM5156x-Q1 with the WEBENCH power designer
All trademarks are the property of their respective owners.
Description
The LM5156x-Q1 (LM5156-Q1 and LM51561-Q1) device is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.
The LM5156x-Q1 device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.
Technical documentation
No results found. Please clear your search and try again.
View all 9 | Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LM5156x-Q1 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with Dual Random Spread Spectrum datasheet (Rev. B) | Jan. 05, 2021 |
| Functional safety information | LM34966-Q1, LM5156x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution (Rev. C) | Apr. 28, 2021 | |
| Technical article | Introduction to EMI: Standards, causes and mitigation techniques | Apr. 21, 2021 | |
| White paper | 透過節省時間和成本的創新技術 降低電源中的EMI | Dec. 04, 2020 | |
| White paper | 전원 공급 장치의 EMI 절감을 위한 시간 및 비용 효율적 혁신 | Dec. 04, 2020 | |
| White paper | Time-Saving and Cost-Effective Innovations for EMI Reduction | Nov. 11, 2020 | |
| Application note | EMI Reduction Technique, Dual Random Spread Spectrum | Jun. 19, 2020 | |
| Application note | How to design an isolated flyback using LM5155 | Feb. 05, 2019 | |
| Technical article | How to add overvoltage protection to a synchronous boost controller | Sep. 17, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
LM5155EVM-FLY
Description
The LM5155EVM-FLY evaluation module showcases the features and performance of the LM5155 as a wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This evaluation module is (...)
Features
- Input voltage range: 18V to 36V
- Isolated output voltage 5V at 4A
- Switching frequency 250kHz
- Two layer PCB with single sided component population
- Hiccup mode short circuit protection
LM5155EVM-SEPIC
Description
The LM5155EVM-SEPIC evaluation module showcases the features and performance of the LM5155 as wide input non-synchronous SEPIC controller. The standard configuration is designed to provide a regulated output of 12V at up to 2A from an input of 3V to 42V, switching at 2.2 MHz.
Features
- Input voltage range: 3V to 42V
- Output voltage 12V, up to to 2A
- Switching frequency 2.2 MHz
- Two layer PCB with single sided component population
LM5156EVM-BST
Description
The LM5156EVM-BST evaluation module showcases the features and performance of the LM5156-Q1 wide-input voltage non-synchronous boost controller. The standard configuration is designed to provide a regulated output of 12 V at 3 A from an input of 3 V to 12 V, switching at 440 kHz.
This EVM is designed (...)
Features
- Input voltage range: 3 V to 12 V
- Output voltage: 12 V at 3 A with 1% accurate reference voltage
- Efficiency > 95% at full load
- 440-kHz switching frequency
- External clock synchronization option
- Internal spread spectrum operation
LM5156HEVM-FLY
Description
The LM5156HEVM-FLY evaluation module showcases the features and performance of the LM51561 (TSSOP package) as wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This (...)
Features
- Input voltage range: 18V to 36V
- Isolate output voltage 5V at 4A
- Switching frequency 250kHz
- Hiccup mode short circuit protection
Design tools & simulation
SNVMBV9E.ZIP (204 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
SNVC224.ZIP (3631 KB)
SNVC240.ZIP (5304 KB)
SNVR481.ZIP (1265 KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| WSON (DSS) | 12 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.