LM34927 - 用于隔离型 DC/DC 转换器的集成型次级偏置稳压器

LM34927是TI德州仪器公司的一款隔离式DC/DC转换器产品，LM34927是用于隔离型 DC/DC 转换器的集成型次级偏置稳压器，本站介绍了LM34927的封装应用图解、特点和优点、功能等，并给出了与LM34927相关的TI元器件型号供参考。

LM34927 - 用于隔离型 DC/DC 转换器的集成型次级偏置稳压器 - 隔离式DC/DC转换器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品特性

Wide 7.5-V to 100-V Input Range
Integrated 600-mA High-Side and Low-Side Switches
No Schottky Required
Constant On-Time Control
No Loop Compensation Required
Ultra-Fast Transient Response
Nearly Constant Operating Frequency
Intelligent Peak Current Limit
Adjustable Output Voltage From 1.225 V
Precision 2% Feedback Reference
Frequency Adjustable to 1 MHz
Adjustable Undervoltage Lockout (UVLO)
Remote Shutdown
Thermal Shutdown
Packages:
- WSON-8
- SO PowerPAD™-8

产品应用

Isolated Telecom Bias Supply
Isolated Automotive and Industrial Electronics

产品说明

The LM34927 regulator features all of the functions needed to implement a low-cost, efficient, isolated bias regulator. This high-voltage regulator contains two 100-V N-channel MOSFET switches — a high-side buck switch and a low-side synchronous switch. The Constant on-time (COT) control scheme employed in the LM34927 device requires no loop compensation and provides excellent transient response. The regulator operates with an on-time that is inversely proportional to the input voltage. This feature allows the operating frequency to remain relatively constant. An intelligent peak current limit is implemented with integrated sense circuit. Other features include a programmable input undervoltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCC Undervoltage Lockout (UVLO). The LM34927 device is offered in WSON-8 and SO PowerPAD-8 plastic packages.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM34927	SO PowerPAD (8)	4.89 mm x 3.90 mm
LM34927	WSON (8)	4.00 mm x 4.00 mm

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