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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

Product Details

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)
1.63
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Simplified Block Diagram

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Parameters

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)
1.63

Key Features

  • 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
    • Overtemperature Protection
    • Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150° C Junction Temperature Range

Applications/Uses

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

Description

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 package. Simulation models are available.

Simplified Block Diagram

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

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .