NCP81234: Multi-Phase Controller with Dual Loop Capability, Configurable, DrMOS Compatible
The NCP81234 can be configured as a single or dual output regulator intended to operate with DrMOS power stages. The device operates from 4.5V to 24V and is ideally suited for powering processors, DDR memory, and FPGAs. The device offers dual control loops, allowing independent operation of each loop with the ability to parallel the outputs for a higher 2 phase solution. This controller offers differential current sense and voltage sense for greater accuracy. The device supports DCR current sense or can accommodate an IMON signal from the DrMOS. The parts offer protection against overcurrent, over/undervoltage, and overtemperature protection.
Features- 4.5 V to 24 V input with internal bias
- Adjustable output from 0.6 V to 5 V
- Adjustable switching frequency from 200 kHz to 1.2 MHz
- PWM output compatible to 3.3 V and 5 V DrMOS
- Differential output sense
- Differential current sense
- Overcurrent, Over/Undervoltage, and Thermal protection
| Benefits- Optimized for 12 V and 5 V bus voltage designs
- Low voltage capability to power core voltages
- Allows optimization of design for size and efficiency
- Compatible with standard DrMOS
- Maintain voltage accuracy with high current design
- Allows DCR current sense (or from Iout of DrMOS)
- Protected against faults
|
Applications- High current designs
- Core power rails
- DDR Memory
- FPGA power
| End Products- Base stations
- Networking
- Routers
- Power Modules
|
Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP81234MNTXG | Active | Pb-free
Halide free | QFN-28 | 485BQ | 1 | Tape and Reel | 5000 | $0.75 |
Specifications
| Product | Topology | Phases | Control Mode | VCC Min (V) | VCC Max (V) | fSW Typ (kHz) | tres Typ (ns) |
|---|
| NCP81234MNTXG | Step-Down | 2 | Current/Voltage Mode | 4.5 | 24 | 200 - 1200 | |
