LM5163-Q1 Texas instruments

LM5163-Q1

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LM5163-Q1

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Описание

The LM5163-Q1 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 LM5163-Q1 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for high-performance 48-V battery automotive applications and MHEV/EV systems.With integrated high-side and low-side power MOSFETs, the LM5163-Q1 delivers up to 0.5-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 LM5163-Q1 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 LM5163-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in a 8-pin SO PowerPAD™ package. Its 1.27-mm pin pitch provides adequate spacing for high-voltage applications.

AEC-Q100-qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C, ambient temperature range
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 automotive power supplies
- 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 25 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
Create a custom design using WEBENCH^® power designer

Vin (min) (V)	6
Vin (max) (V)	100
Vout (min) (V)	1.2
Vout (max) (V)	90
Iout (max) (A)	0.5
Iq (typ) (mA)	0.0105
Switching frequency (min) (kHz)	75
Switching frequency (max) (kHz)	1000
Features	Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification
Operating temperature range (°C)	-40 to 150
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Regulated outputs (#)	1
Control mode	Constant on-time (COT)
Duty cycle (max) (%)	99
Type	Converter