مدار مجتمع (آی سی) آی‌سی مدیریت توان (پی‌ام‌آی‌سی) رگولاتور ولتاژ سوئیچینگ دی سی به دی سی

Product Attributes

Introduction

HT6050A is a step-down DC/DC regulator with an internal switch, featuring SKIP control mode, which combines low quiescent current with high switching frequency to achieve high-efficiency regulation over a wide range of load currents. SKIP mode uses a short "burst" cycle to switch the inductor current through the internal power MOSFET, followed by a sleep cycle in which the power switch is turned off and the load current is provided by the output capacitor. At light loads, burst cycles are a small fraction of the total cycle time, minimizing average supply current and greatly improving efficiency at light loads.

HT6050A has a wide input voltage range of 4V - 60V, thus minimizing the need for external surge suppression components. Making it the best choice for wide input power range industrial and high cell count battery pack applications. HT6050A is ideal for use in the 48V automotive power bus range.

HT6050A features low-value 100mΩ high-side and 80mΩ low-side MOSFET that provide at least 3A output current capability with excellent load and line transient response.

Additional features include: soft-start, thermal shutdown, UVLO undervoltage lockout, gate driver undervoltage lockout, maximum duty cycle limit timer, and current limit shutdown timer. It also integrates output short-circuit protection, providing HICCUP mode when the FB voltage is low to avoid overheating during short-circuit.

HT6050A is a high efficiency, high power density synchronous buck converter. The chip has an input voltage range of 4V to 60V, and is internally integrated with upper and lower power Mos tubes, which can output up to 3A load current. And can provide a stable output voltage from 1V to VIN.

HT6050A has SKIP control mode, which combines low static current with high switching frequency to achieve high efficiency over a wide range of load current. Fixed frequency peak current control mode with integrated internal compensation is adopted to shorten design time and require fewer external devices. HT6050A adjusts the switching frequency from 200kHz to 2MHz through an external resistor. The wide switching frequency range allows the chip to be optimized for small volume requirements at higher frequencies or efficient power supplies at lower frequencies. In addition, HT6050A can operate at close to 100% of the maximum duty cycle to achieve the best possible input - output differential pressure. HT6050A integrates a bypass LDO linear power supply, which can be connected to an external low - voltage power supply to generate VCC, further improving the chip's light - load efficiency under high voltage input conditions. The chip provides the automatic detection and switching circuit of bypass LDO. When the bypass LDO is directly connected to VOUT and the VOUT rises above the switching threshold, the internal LDO input power can be seamlessly switched from VIN to VOUT.

HT6050A also offers a variety of other features, including an external resistor to adjust the output voltage, a choice of built - in soft start or external adjustable soft start, an output voltage follow function, and a good sign of power supply. Protection features include periodic peak and trough current limiting, output short - circuit protection in Hiccup mode, input overvoltage protection for hot swap applications, thermal turn - off and self - recovery, and precise input undervoltage protection.

Features

• 20 - μA Quiescent current in regulation
• Input voltage range: 4V - 60V
• Output voltage range: 1V - VIN
• Integrated upper and lower power MOSFET maximum current: 5A
• Adjustable frequency range: 200KHz~2MHz
• Automatic switching of CCM/DCM/PFM mode
• Adjustable soft - start time and Output voltage tracking capability
• Automatically switched bypass linear power supply
• Provides ultra - low input and output dropout voltage close to 100% duty cycle
• Internal Compensation
• Power - good flag
• Dynamic Frequency Stretch Technology
• Support large capacitive load start - up
• Protection function: UVLO/OCP/SCP/OTP/OVP
• Operating junction temperature range: - 40°C to + 125°C
• All pins have ±2000V (HBM) ESD protection
• ETSSOP 16 - Pin Exposed Pad Package

Applications

• Industrial power supply
• Wide voltage input range power supply
• Low ripple low noise power supply
• Automotive electronic power supply