Monolithic Power Systems MP3314A | Demoboard EV3314A-C-00A

Description

The EV3314A-C-00A evaluation board is designed to demonstrate the capabilities of the MP3314A, a boost converter with 6 channel current sources that drives WLED arrays for LCD panels in virtual reality (VR) backlighting applications.The MP3314A supports a 3V to 30V input voltage (VIN) range, and an output voltage (VOUT) up to 43V. The device uses peak current mode control and pulse-width modulation (PWM) control to maintain boost converter regulation. The 6 integrated LED current source channels support up to 80mA per channel.The MP3314A provides two PWM input signals (PWM1 and PWM2) to control the brightness of LED channel 1 to channel 3 and LED channel 4 to channel 6, respectively. The device employs a standard I2C digital interface to set the LED current, switching frequency (fSW), frequency spread spectrum (FSS), and various protection thresholds.The MP3314A supports a configurable switching slope and the FSS function to improve EMI performance. The device features high efficiency due to a low-headroom voltage for LED regulation and the switching MOSFET’s small on resistance (RDS(ON)).For system reliability, the MP3314A integrates rich protections, including LED open protection, LED short protection, over-current protection (OCP), over-voltage protection (OVP), and over-temperature protection.The MP3314A is available in a WLCSP-20 (1.7mmx2.45mm) package.

Features

• 6 Channels with Maximum 80mA/Channel
• Integrated 50V, 130mΩ, On Resistance (RDS(ON)) Low-Side MOSFET (LS-FET)
• 3V to 30V Input Voltage (VIN) Range
• Up to 43V of Output Voltage (VOUT)
• 187.5mV LED Regulation Voltage at 20mA
• 2% ILED Accuracy, <3% LED Current (ILED) Matching at 20mA
• Selectable Switching Frequency (fSW): 312kHz, 625kHz, or 1250kHz
• I2C Brightness Control
• Manual Mode and Direct Pulse-Width Modulation (PWM) Dimming
• PWM1 and PWM2 Input Signals to Control Channel 1 to Channel 3 and Channel 4 to Channel 6, Respectively
• Configurable Switching Slope and Frequency Spread Spectrum (FSS) Function to Improve EMI
• One-Time Programmable (OTP) Memory for Customizable Default Register Values
• LED Open/Short Protection
• Over-Temperature Protection
• Over-Current Protection (OCP), Inductor, or Diode Short Protection
• Available in a WLCSP-20 (1.7mmx2.45mm) Package

Typical applications

• VR (virtual reality) backlighting, Virtual Reality (VR) Displays

More information

• Datasheet
• IC product information