Analog Devices / Maxim Integrated MAX17579/MAX17580 Synchronous DC-DC Converters
Analog Devices Inc. MAX17579/MAX17580 Synchronous DC-DC Converters are high-efficiency, high-voltage, inverting, Himalaya synchronous DC-DC converters with integrated MOSFETs and internal compensation. The ADI 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. ADI MAX17579 operates in continuous conduction mode (CCM) at all loads, which provides 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, 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.
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, 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 pre-biased output voltage
- Built-in output voltage monitoring with 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
- Industrial control power supply
- General purpose Point-of-Load
- Gate-drive circuits
- Motion control
- Wall-transformer regulation
- High-voltage, single-board system
Simplified Application Circuit
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Analog Devices / Maxim Integrated Himalaya uSLIC™功率模組
微型降壓DC-DC功率模組，輸入電壓範圍為4.0V至60V 。
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Analog Devices / Maxim Integrated MAX17579EVKIT/MAX17580EVKIT Evaluation Kits
Evaluates the MAX17579/MAX17580 high-efficiency high-voltage inverting synchronous DC-DC converters.