Texas Instruments LM5137/LM5137-Q1 DC/DC Controllers
Texas Instruments LM5137/LM5137-Q1 Buck Controllers are 80V synchronous DC/DC controllers offered from a family with three options for functional safety: Capable, SIL 2, and SIL 3. These dual-channel controllers employ an interleaved, stackable, peak current-mode architecture, facilitating easy loop compensation, a fast transient response, and excellent load and line regulation. The LM5137/LM5137-Q1 controllers operate with 1% accuracy, offering fixed 3.3V, 5V, 12V, or adjustable outputs within a 0.8V to 60V voltage range. This controller operates at 150°C maximum junction temperature and is designed with a 100kHz to 2.64MHz switching frequency range. The LM5137/LM5137-Q1 controllers is available in a 6mm x 6mm, thermally enhanced, 36-pin VQFN package. This buck controller is ideal for communications systems, wireless infrastructure, industrial, factory automation, control, robotics, enterprise systems, high-performance computing, and high-voltage battery-operated systems.
Features
- AEC-Q100 qualified for automotive applications
- Device temperature grade 1 at -40°C to +125°C ambient operating temperature
- Functional safety-capable documentation is available to aid in functional safety system design
- Functional safety-compliant options SIL 2 and SIL 3
- Dual-channel synchronous buck DC/DC controller:
- Wide input voltage range of 4V to 80V
- 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 60V
- 150°C maximum junction temperature
- Charge-pump gate drivers for 100% duty cycle
- No-load sleep current of 9µA (typical)
- Two interleaved synchronous buck channels:
- Dual-channel or single-output multiphase
- Stackable up to four phases
- SYNC in and SYNC out capability
- Selectable light-load PFM or FPWM
- Inherent protection features for robust design:
- Internal hiccup-mode overcurrent protection
- Independent ENABLE and PGOOD functions
- Adjustable output voltage soft start
- VCC and gate-drive UVLO protection
- Shunt or inductor DCR current sensing
- Thermal shutdown protection with hysteresis
- Designed for ultra-low EMI requirements:
- Dual Random Spread Spectrum (DRSS)
- 100kHz to 2.64MHz switching frequency range
- VQFN-36 package with wettable flanks
- Create a custom design using the LM5137 with WEBENCH® Power Designer
Applications
- Communications systems and wireless infrastructure
- Industrial:
- Factory automation and control
- Robotics
- High-performance computing enterprise systems
- High-voltage battery-operated systems
- 48VIN automotive, body electronics, and lighting
- Infotainment and cluster, ADAS
- Hybrid, electric, and powertrain systems
- High-voltage battery-operated systems
Related Buck Controllers
Texas Instruments LM5137F/LM5137F-Q1 Synchronous Buck Controllers
100% duty cycle capable, ASIL B or ASIL D & interleaved, stackable, peak current-mode architecture.