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4.5V to 60V, 300mA 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

应用/用途

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) 0.3
Switch Type Internal
Output Adjust. Method Resistor
# DC-DC Outputs 1
Switching Frequency (kHz) 400
Power Good Signal Yes
Package/Pins TDFN-CU/12
Budgetary
Price (See Notes)
1.57
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简化框图

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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) 0.3
Switch Type Internal
Output Adjust. Method Resistor
# DC-DC Outputs 1
Switching Frequency (kHz) 400
Power Good Signal Yes
Package/Pins TDFN-CU/12
Budgetary
Price (See Notes)
1.57

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 300mA Output Current
    • 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
  • Reduces Power Dissipation
    • 88.4% 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
    • 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 MAX17579 and MAX17580 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 300mA of load current from a wide 4.5V to (60V-|VOUT|) input-voltage range. 

The devices feature peak current-mode control architecture. The MAX17579 operates in continuous conduction mode (CCM) at all loads, thus, providing a constant frequency operation. The MAX17580 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 package. Simulation models are available.

简化框图

MAX17579, MAX17580: Simplified Application Circuit MAX17579, MAX17580: Simplified Application Circuit Zoom icon

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在Maxim的知识库中搜索技术问题的答案

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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