Analog Devices Inc. ADPL74101 Synchronous Step-Down DC-DC Controller
Analog Devices ADPL74101 Synchronous Step-Down DC-DC Controller drives all N-channel synchronous metal-oxide-semiconductor field-effect transistor (MOSFET) power stages from input voltages up to 100V. The ADPL74101 features an adjustable gate-drive voltage from 4V to 5.5V, ideal for driving logic-level MOSFETs.
The internal smart bootstrap switch avoids the need for an external diode. The very low no-load quiescent current extends the operating time of battery-powered systems. The MODE pin selects between pulse-skipping mode, burst mode, or continuous inductor current mode at light loads.
The Analog Devices ADPL74101 also features spread-spectrum operation, which significantly reduces peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards.
Features
- Wide 4V to 100V VIN range
- Wide 0.8V ≤ VOUT ≤ 60V output voltage range
- Internal bootstrap switch for the high-side gate driver stage
- Accurate adjustable driver voltage with UVLO protection
- Selectable continuous, pulse-skipping, or burst mode operation at light loads
- Programmable output voltage with VPRG pin (5V or 12V)
- Current limit foldback during a short fault
- 5μA (48VIN to 5VOUT) low operating IQ
- Programmable frequency (100kHz to 1MHz)
- Spread spectrum frequency modulation
- 28-lead (4mm × 5mm), QFN package
Applications
- Industrial power systems
- Military avionics and medical systems
- Telecommunications power systems
Typical Application
Development Tool
Analog Devices Inc. EVAL-ADPL74101-AZ Evaluation Board
Evaluation board features the ADPL74101, a 100V step-down synchronous controller.