EV3520Q
Dual Phase Step-up DC-DC Controller with SPI
DESCRIPTION
The EV3520Q is a dual-phase, peak current mode, boost controller with SPI communication interface. The output voltage is controlled using an external feedback resistor voltage divider and a SPI-programmable, 8-bit DAC allowing on-the-fly output voltage adjustment.
An additional two phases (four total) are supported via CLKIN/OUT pins. The EV3520Q includes integrated phase-shifted clock signalling for improved output ripple and reduced system filtering capacitance and inductance requirements.
The EV3520Q’s integrated SPI also includes programmable diagnostics for improved visibility and protection. Internal protection features include cycle-by-cycle current limit, boost output overvoltage and undervoltage protection, and over temperature protection. In addition to the SPI fault monitoring, faults may be monitored with the open drain fault pin.
For improved reliability, the EV3520Q includes an LH pin to initiate limp home (LH) mode which utilizes a redundant set of SPI registers.
APPLICATIONS
- LED Boost Supply
- General Purpose Step-up Converter
- Battery Power Industrial / Instrumentation
PRODUCT INFORMATION
KEY FEATURES
| Product | EV3520Q |
|---|---|
| Datasheet | Ask Application Engineering |
| Topology | Boost, Peak Current Mode |
| Regulation | Output Voltage |
| Channels | 1 |
| Phases | 2 |
| VIN,MIN [V] | 4.5 |
| VIN (MAX) [V] | 55 |
| Frequency [kHz] | 100 ~ 700 |
| Interface | SPI |
| Minimum Operating Temperature [°C] | -40 |
| Maximum Operating Temperature [°C] | 125 |
| IOUT (MIN) | |
| Adjustment Method | Grounded Resistor |
| LED Dimming Method | PWM, Direct |
| Features | UVLO, OV, UV, OTLO, SYNC, Spread-Spectrum, Limp Mode, Programmable Fault Control, SPI-Controlled Output Adjust |
| Functional Safety | QM |
| Grade | AEC-Q100 Grade 1 |
| Package | 24-Lead TSSOP |
DOCUMENTATION
| Document | Note |
|---|---|
| Datasheet | Contact Application Engineering |
| Demoboard Manual | Contact Application Engineering |
| Demoboard Design Files | Contact Application Engineering |
ORDERING
| PART NUMBER | EV3520Q |
|---|---|
| PART MARKING | EV3520Q |
| FINISH CODE | TBD |
| PAD FINISH | Au(RoHs) |
| PACKAGE TYPE | TSSOP |
| MSL RATING | 3 |
| TEMPERATURE RANGE | -40°C to 125°C |
Consult Elevation Microsystems Marketing for parts specified