L4981AD013TR

Overview

The L4981AD013TR is a Power Factor Correction (PFC) controller from STMicroelectronics, part of the L4981A series. It utilizes BCD 60II technology to achieve a power factor up to 0.99 with sinusoidal line current consumption. Designed for universal input mains between 85V and 265V without line switches, it operates at a fixed switching frequency of 115 kHz using average current mode PWM control, eliminating the need for slope compensation. The device integrates a high-current bipolar and DMOS图腾柱 output gate driver, error amplifier, under-voltage lockout, soft start, and overvoltage/overcurrent protection. It features a low startup supply current of 0.3 mA typical and supports an operating temperature range from -40°C to +125°C in a surface-mount SO-20 package.

Feature Summary

• Fixed frequency average current mode PWM control for optimized input filter size and noise immunity
• Integrated high-current bipolar and DMOS totem-pole output for direct MOSFET gate driving
• Built-in protections including overvoltage, overcurrent, and programmable under-voltage lockout
• Low startup supply current enabling efficient pre-regulator design

Applications

• Universal input AC-DC power supplies
• Server and telecom power systems
• High-efficiency mode power supplies requiring sinusoidal line current
• Pre-regulators for mains voltages between 85V and 265V

Procurement Notes

Verify the specific suffix 'D013TR' corresponds to the reel packaging format required for your assembly line, as datasheets may list tube options for other variants like L4981AD. Confirm that the fixed frequency operation of the L4981A series aligns with your EMI filtering strategy, as opposed to the spread-spectrum capabilities of the L4981B series. Ensure component authenticity through authorized channels given the active status of this PMIC.

Selection Notes

Select the L4981AD013TR when a fixed switching frequency is preferred to simplify input filter design compared to line-modulated frequency alternatives. This model is suitable for applications requiring average current mode control without slope compensation. Consider the integrated protections and low startup current if minimizing external component count and standby power consumption are critical design constraints.

Part Context

The L4981AD013TR belongs to the L4981 family of PFC controllers, specifically the L4981A sub-series which offers fixed frequency operation. It is manufactured by STMicroelectronics using BCD 60II technology. The device is categorized under PMIC - Power Management ICs and serves as a pre-regulator for high-efficiency power supplies. It is distinct from the L4981B series, which features line-modulated frequency operation.

Replacement Considerations

The L4981BD013TR is a confirmed substitute within the same family, offering line-modulated frequency average current mode instead of fixed frequency. Both share similar integration levels and package types.