E-L5991AD ST PWM Controller | 16-SO | 1MHz, 50% Duty Cycle

Product Overview

The E-L5991AD from STMicroelectronics is a high-performance current-mode PWM controller designed for offline and DC-DC converters. It operates at a fixed frequency up to 1MHz and features a 50% maximum duty cycle. The device integrates a 700V startup circuit, soft-start, and protection features including overcurrent, overvoltage, and thermal shutdown. Housed in a compact 16-SO package, it is ideal for power supplies requiring high efficiency and reliability.

Detailed Technical Specifications

Key Features

• Current-mode control with cycle-by-cycle current limiting
• Programmable soft-start
• Under-voltage lockout (UVLO) with hysteresis
• Overvoltage protection (OVP)
• Thermal shutdown
• Low startup current
• Frequency jitter for EMI reduction

Target Applications

The E-L5991AD is suitable for a wide range of power supply applications, including:

• AC-DC adapters for laptops and chargers
• Offline power supplies for 5G base stations
• DC-DC converters for automotive dashboards
• Industrial power supplies for PLCs and motor drives
• LED lighting drivers

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for E-L5991AD. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

E-L5991AD 是意法半導體推出的一款高性能電流模式 PWM 控制器，專為離線式和 DC-DC 轉換器設計。它可在高達 1MHz 的固定頻率下工作，最大佔空比為 50%。該器件集成了 700V 啟動電路、軟啟動以及過流、過壓和熱關斷等保護功能。採用緊湊的 16-SO 封裝，非常適合需要高效率和高可靠性的電源應用。

詳細技術參數

核心特性

• 電流模式控制，逐週期電流限制
• 可編程軟啟動
• 欠壓鎖定 (UVLO) 帶滯回
• 過壓保護 (OVP)
• 熱關斷
• 低啟動電流
• 頻率抖動以降低 EMI

典型應用場景

E-L5991AD 適用於多種電源應用，包括：

• 筆記本電腦和充電器的 AC-DC 適配器
• 5G 基站的離線式電源
• 汽車儀表板的 DC-DC 轉換器
• PLC 和電機驅動的工業電源
• LED 照明驅動器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 E-L5991AD 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]