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ReferenzdesignMP3314A | Demoboard EV3314A-C-00A

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

6-Channel, 80mA, 50V, Boost WLED Driver with I2C Interface Evaluation Board

Details

TopologieAufwärtswandler
Eingangsspannung3-30 V
IC-Revision1.1

Beschreibung

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.

Eigenschaften

  • 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

Typische Anwendungen

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

Weiterführende Informationen

Artikeldaten

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C
VR(V (DC))
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
DF(%)
Raster(mm)
Ø D(mm)
L(mm)
Verpackung
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860020675020
SPECWCAP-ATG5 Aluminium-Elektrolytkondensatoren, 220 µF, 50 V (DC)
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Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
ProduktserieWCAP-ATG5 Aluminium-Elektrolytkondensatoren
Kapazität220 µF
Nennspannung50 V (DC)
Endurance 2000
Rippelstrom345 mA
Leckstrom110 µA
Verlustfaktor10 %
Raster5 mm
Durchmesser10 mm
Länge12.5 mm
VerpackungAmmopack 
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