LM5041B_TI 具有参考引脚禁用选项的级联 PWM 控制器

LM5041B的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
功能描述：具有参考引脚禁用选项的级联 PWM 控制器
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LM5041B的产品详情：

The LM5041B PWM controller contains all of the features necessary to implement either current-fed or voltage-fed push-pull or bridge power converters. These “Cascaded” topologies are well suited for multiple output and higher power applications. The LM5041B includes these four control outputs: the buck stage controls (HD and LD) and the push-pull control outputs (PUSH and PULL). Push-pull outputs are driven at 50% nominal duty cycle at one half of the switching frequency of the buck stage and can be configured for either a guaranteed overlap time (for current-fed applications) or a guaranteed non-overlap time (for voltage-fed applications). Push-pull stage MOSFETs can be driven directly from the internal gate drivers while the buck stage requires an external driver such as the LM5102. The LM5041B includes a high-voltage start-up regulator that operates over a wide input range of 15V to 100V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 1 MHz and total propagation delays of less than 100 ns. Additional features include line Under-Voltage Lock-Out (UVLO), Soft-Start, an error amplifier, precision voltage reference, and thermal shutdown.

The differences between LM5041, LM5041A and LM5041B are as follows: In the LM5041A and the LM5041B version, the hiccup mode over-current protection is not employed and the VCC bias regulator is not disabled by a low state at the SS pin. In the LM5041B version, both the high and low side buck stage gate drivers are forced to a low state when the controller is disabled. In the LM5041 and the LM5041B version, the buck stage controller is disabled by either a low state at the UVLO pin or a low state at the SS pin. Also in the LM5041B version, the REF pin 5V regulator is not disabled by a UVLO pin low state.

LM5041B的优势和特性：

Internal Start-up Bias Regulator

Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis

Current Mode Control

Internal Error Amplifier with Reference

Cycle-by-cycle Over-Current Protection

Leading Edge Blanking

Programmable Push-Pull Overlap or Dead Time

Internal 1.5A Push-Pull Gate Drivers

Programmable Soft-Start

Programmable Oscillator with Sync Capability

Precision Reference

Thermal Shutdown

LM5041B的参数（英文）：

Topology
Push-Pull
Duty cycle (Max) (%)
50
Supply voltage (Max) (V)
15
UVLO thresholds on/off (V)
Programmable/2.5V
Features
Current Limiting, Programmable Soft Start, Synchronization Pin
Operating temperature range (C)
-40 to 125
Rating
Catalog
Frequency (Max) (kHz)
1000
Gate drive (Typ) (A)
1.5

LM5041B具体的完整产品型号参数及价格（美元）：

LM5041B的完整型号有：LM5041BMTC/NOPB、LM5041BMTCX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM5041BMTC/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：92个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5041BMTC/NOPB的批量USD价格：1.373（1000+）

LM5041BMTCX/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5041BMTCX/NOPB的批量USD价格：1.144（1000+）

LM5041B的评估套件：

LM5041B的电路图解：

LM5041B的评估套件：