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4.5V to 60V, 1A High-Efficiency, Synchronous, Inverting Output DC-DC Converters

Creates A Negative Output Voltage in a Small Solution Size, No External Level Shifters

产品详情

主要特征

Parametric specs for Inverting Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 60
VOUT1 (V) (min) -0.9
VOUT1 (V) (max) -36
IOUT1 (A) (max) 1
Switch Type Internal
Output Adjust. Method Resistor
Switching Frequency (kHz) 600
Power Good Signal Yes
Package/Pins TDFN-CU/12
Budgetary
Price (See Notes)
1.9
缩小

简化框图

Technical Docs

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参量

Parametric specs for Inverting Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 60
VOUT1 (V) (min) -0.9
VOUT1 (V) (max) -36
IOUT1 (A) (max) 1
Switch Type Internal
Output Adjust. Method Resistor
Switching Frequency (kHz) 600
Power Good Signal Yes
Package/Pins TDFN-CU/12
Budgetary
Price (See Notes)
1.9

主要特征

  • Reduces External Components and Total Cost
    • Synchronous Operation
    • All-Ceramic Capacitors, Compact Layout
    • Internal Loop Compensation
    • System Ground Referenced I/O Pins (EN/UVLO, Active-Low RESET)
  • Flexibility to Support Multiple Rails in a System
    • Adjustable Output Voltage Range from -0.9V to -36V
    • Wide 4.5V to (60V - |VOUT|) Input-Voltage Range
    • Up to 1A Output Current
    • 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
  • Reduces Power Dissipation
    • 90.6% Peak Efficiency
    • DCM for Superior Light-Load Efficiency
    • 6.2µA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Overload Protection
    • Adjustable Soft-Start
    • Monotonic Startup with Prebiased Output Voltage
    • Built-In Output-Voltage Monitoring with Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions
    • Overtemperature Protection
    • Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150° C Junction Temperature Range

应用/用途

  • Industrial Control Power Supply
  • General-Purpose Point-of-Load
  • Gate-Drive Circuits
  • Motion Control
  • Wall-Transformer Regulation
  • High-Voltage, Single-Board System

描述

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. The MAX17577 and MAX17578 are high-efficiency, high-voltage, inverting, Himalaya synchronous DC-DC converters with integrated MOSFETs and internal compensation. The devices generate output voltages (VOUT) from -0.9V to -36V and can deliver up to 1A of load current from a wide 4.5V to (60V - |VOUT|) input- voltage range.

The devices feature peak current-mode control architecture. The MAX17577 operates in continuous conduction mode (CCM) at all loads; thus, providing a constant frequency operation. The MAX17578 operates in discontinuous conduction mode (DCM) for superior efficiency at light loads. Low minimum on-time allows higher switching frequencies and small solution sizes.

The devices allow the EN/UVLO, active-low RESET and RT/SYNC pins to be driven by signals that are referenced to system ground, eliminating the need for external-level shifter circuits. The feedback-voltage regulation accuracy is ±1.3% over a wide -40°C to +125°C temperature range. The devices are available in a compact 12-pin (3mm x 3mm) TDFN-EP package. Simulation models are available.

简化框图

MAX17577, MAX17578: Typical Application Circuit MAX17577, MAX17578: Typical Application Circuit Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com