LM5116 - 100V 宽输入电压同步降压控制器

LM5116是TI德州仪器公司的一款控制器（外部开关）产品，LM5116是100V 宽输入电压同步降压控制器，本站介绍了LM5116的封装应用图解、特点和优点、功能等，并给出了与LM5116相关的TI元器件型号供参考。

LM5116 - 100V 宽输入电压同步降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Emulated Peak Current Mode
Wide Operating Range Up to 100 V
Low IQ Shutdown (< 10 µA)
Drives Standard or Logic Level MOSFETs
Robust 3.5-A Peak Gate Drive
Free-run or Synchronous Operation to 1 MHz
Optional Diode Emulation Mode
Programmable Output from 1.215 V to 80 V
Precision 1.5% Voltage Reference
Programmable Current Limit
Programmable Soft-Start
Programmable Line Undervoltage Lockout
Automatic Switch to External Bias Supply
HTSSOP-20 Exposed Pad
Thermal Shutdown

产品应用

Automotive Infotainment
Industrial DC-DC Motor Drivers
Automotive USB Adapters
Telecom Servers

产品说明

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high-voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high-input voltage applications.

The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation, for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current.

Additional features include a high-voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle-by-cycle current limit, and adjustable line undervoltage lockout. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM5116	HTSSOP (20)	6.50 mm × 4.40 mm

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