6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ
Product details
Parameters
Package | Pins | Size
Features
- Designed for reliable and rugged applications
- Wide input voltage range of 6 V to 100 V
- Junction temperature range: –40°C to +150°C
- Fixed 3-ms internal soft-start timer
- Peak and valley current-limit protection
- Input UVLO and thermal shutdown protection
- Suited for scalable Industrial power supplies and battery packs
- Low minimum on- and off-times of 50 ns
- Adjustable switching frequency up to 1 MHz
- Diode emulation for high light-load efficiency
- 10.5-µA no-load input quiescent current
- 3-µA shutdown quiescent current
- Optimized for CISPR 32 EMI standard
- Integration reduces solution size and cost
- COT mode control architecture
- Integrated 0.725-Ω NFET buck switch supports wide duty-cycle range
- Integrated 0.34-Ω NFET synchronous rectifier eliminates external Schottky diode
- 1.2-V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power good indicator
- 8-Pin SOIC package with PowerPAD™
- Create a custom design using WEBENCH® power designer
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Description
The LM5164 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on-time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5164 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications.
With integrated high-side and low-side power MOSFETs, the LM5164 delivers up to 1-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. Additional features of the LM5164 include ultra-low IQ and diode emulation mode operation for high light-load efficiency, innovative peak and valley overcurrent protection, integrated VCC bias supply and bootstrap diode, precision enable and input UVLO, and thermal shutdown protection with automatic recovery. An open-drain PGOOD indicator provides sequencing, fault reporting, and output voltage monitoring.
The LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. Its 1.27-mm pin pitch provides adequate spacing for high-voltage applications.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Inegrated Synchronous Rectification
- Low Operating Quiescent Current
- High Efficiency at Light Loads
- Short Minimum On-time
Design tools & simulation
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
- (...)
Features
- Determine buck inductance and input and output capacitances
- Optimize the design using efficiency and solution size as key performance metrics
- Select components input UVLO, output voltage setpoint, FB ripple, and switching frequency
- Inspect converter efficiency, solution size, component power (...)
Reference designs
Design files
-
download TIDA-010030 BOM Files.zip (345KB) -
download TIDA-010030 Assembly Files.zip (317KB) -
download TIDA-010030 Layer Plots.zip (1275KB) -
download TIDA-010030 Gerber (Rev. A).zip (1423KB) -
download TIDA-010030 CAD Files (Rev. B).zip (4151KB)
Design files
-
download TIDA-010070 BOM.pdf (102KB) -
download TIDA-010070 Assembly Drawing.pdf (209KB) -
download TIDA-010070 PCB.pdf (1163KB) -
download TIDA-010070 CAD Files.zip (2953KB) -
download TIDA-010070 Gerber.zip (321KB)
Design files
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SO PowerPAD (DDA) | 8 | View options |
Ordering & quality
- 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
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