Analog Devices / Maxim Integrated MAX20034 Dual Buck Controllers
Analog Devices MAX20034 Dual Buck Controllers are automotive 2.2MHz devices that provide two high-voltage, synchronous step-down controllers. The controllers operate at 180° out-of-phase. The IC operates with a 3.5V to 42V input-voltage supply and can function in dropout conditions by running at a 99% duty cycle. It's intended for applications with mid- to high-power requirements that perform at a wide input voltage range. This includes during automotive cold crank or engine stop-start conditions.
Features
- Meets stringent OEM module power-consumption and performance specifications
- 17µA quiescent current in skip mode
- ±1.5% output-voltage accuracy: 5.0V/3.3V fixed, or adjustable between 1V and 10V
- Enables crank-ready designs
- Wide 3.5V to 36V input supply range
- EMI reduction features reduce interference with sensitive radio bands without sacrificing wide input voltage range
- 50ns (typ) minimum on-time guarantees SkipFree operation for 3.3V output from a car battery at 2.2MHz
- Spread-spectrum option
- Frequency-synchronization input
- Resistor-programmable frequency between 220kHz and 2.2MHz
- Integration and thermally enhanced packages save board space and cost
- Dual, up to 2.2MHz step-down controllers
- 180° out-of-phase operation
- Current-mode controllers with forced-PWM (FPWM) and skip modes
- Thermally enhanced, 28-pin TQFN-EP package
- Protection features improve system reliability
- Supply overvoltage and undervoltage lockout
- Overtemperature and short-circuit protection
Applications
- POL applications for automotive power
- Distributed DC power systems
- Navigation and radio head units
Block Diagram
Evaluation Kit
Analog Devices / Maxim Integrated MAX20034 Evaluation Kit
Fully assembled and tested application circuit that simplifies evaluation of the MAX20034.
Opublikowano: 2019-06-20
| Zaktualizowano: 2023-04-17