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Technical Specifications
Parameters and characteristics for this part
| Specification | LM5122EVM-2PH |
|---|---|
| Board Type | Fully Populated |
| Current - Output | 7 A |
| Frequency - Switching | 250 kHz |
| Main Purpose | DC/DC, Step Up |
| Outputs and Type | Non-Isolated |
| Outputs and Type | 1 |
| Regulator Topology | Boost |
| Supplied Contents | Board(s) |
| Utilized IC / Part | LM5122 |
| Voltage - Input [Max] | 20 V |
| Voltage - Input [Min] | 9 VDC |
| Voltage - Output | 28 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Box | 1 | $ 178.80 | |
Description
General part information
LM5122-Q1 Series
The LM5122ZA is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.
The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.
An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.
Documents
Technical documentation and resources
