DIODES AL58263EV1 16-Channel LED Driver User Guide

User Guide for DIODES models including: AL58263EV1 16-Channel LED Driver, AL58263EV1, 16-Channel LED Driver, LED Driver, Driver

AL58263EV1 User Guide

16-Channel LED Driver With 16-bit APDM Control

The AL58263 is a 16-channel constant current LED driver with 16-bit grayscale Adaptive Pulse Density Modulation (APDM), supports error diagnostics, power saving function and current gain control.

Diodes Incorporated

AL58263EV1 User Guide

2 days ago — The device operates over a 3V to 5.5V input voltage range, 15V output channel voltage, a fast 25MHz data clock (DCK) serial input, delivers up to 55mA of high.

File Info : application/pdf, 12 Pages, 1.66MB

AL58263EV1-User-Guide

AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Description
The AL58263 is a 16-channel constant current LED driver with 16-bit grayscale Adaptive Pulse Density Modulation (APDM), supports error diagnostics, power saving function and current gain control. This distinctive APDM technology abates the non-ideal IOUT distortion due to non-symmetric transient responses and enhances the refresh rate by separating efficiently the frame waveform.
The device operates over a 3V to 5.5V input voltage range, 15V output channel voltage, a fast 25MHz data clock (DCK) serial input, delivers up to 55mA of high accuracy current to each string of LED. Each channel output current can be programmable thru digital interface individually. All channels output current could be set by one external sensing resistor along with 6-bit global current control register.
The AL58263 has built-in diagnosis and LED open/short protection and error detection, those errors results are stored in register for MCU to read out.
The AL58263 is available in the TSSOP-24EP (Type A1-B) package and specified over the -40°C to +85°C ambient temperature range.
Applications
Indoor and Outdoor LED Video Displays Variable Message Sign (VMS) Traffic Sign Outdoor Billboard Signage LCD Display Backlighting

±3% (typical) LED Current accuracy between chips
Non-scramble waveform for high power LED application
Grayscale counter reset selection Grayscale data synchronization selection
· Diagnosis and Protections Error detection includes LED Open, LED Short, Output port leakage, Output short-to-GND, Output short-to-Power and REXT short-to-GND Error detection LEDs on at 0.1mA to avoid any flickering Short detection threshold voltage selection (2/3/4/4.5V) Sleep and 0-data mode to lower down the supply current Pre-Over-temperature warning
· 4-Wire Serial Interface (LAT, DI, DO, DCK) 25MHz Clock frequency for data transfer EMI reduction grayscale clock Cascaded capability (Max 1,440 devices) External GCK watchdog Stagger outputs delay for EMI reduction
· Totally Lead-Free & Fully RoHS Compliant (Notes 1& 2)
· Halogen and Antimony Free. "Green" Device (Note 3)
· For automotive applications requiring specific change control (i.e. parts qualified to AECQ100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-
definitions/

Features
· Input Voltage VDD: 3V to 5.5V · Output Current Range
2~55mA/5V, 2~35mA/3.3V ±0.1% Output current regulation capability 6-bit global current control: from 12.5% to 200% · 16 Constant-Current Sink Output Channel 16-bit grayscale resolution with Adaptive Pulse Density Modulation control 15V Rated output channels for long LED strings Fast Transient Response supports external
grayscale clock with double edge up to 16MHz ±1.5% (typical) LED Current accuracy between
channels

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AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Hardware Description
The AL58263 evaluation board as shown in Figure 1 and Figure 2:

10 9

Figure 1. Top View

Figure 2. Bottom View

Section 1 2 3 4 5 6 7 8 9 10 11 12

Description Mode Select button GCK internal/external select switch GCK external connect switch LED Short Circuit Setting switch(default OFF) LED Scrolling Mode display section LED Diagnosis/Fault location section LED Open Circuit Setting switch(default ON) AL58263 16-Channel LED Driver System Reset button REXT Short Circuit Setting switch(default OFF) Control board AAA dry batteries box

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AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control
Power Supply Options
The device features two power supply options: 1. Utilizing six AAA dry batteries for portable convenience. 2. Connecting the ARDUINO control board via the USB interface (type C) to serve as the power source.
Note: The two power supply methods cannot be used simultaneously.
Low Voltage Warning
In the event of insufficient voltage from the connected batteries (total voltage in series ranging from 6V to 7V), the "LED Fault Location (Status) Display Area" will present the BCD code of the total series voltage. This BCD code includes the tens digit of the voltage (LED1-4), the units digit of the voltage (LED5-8), the first decimal digit of the voltage (LED9-12), and the second decimal digit of the voltage (LED13-16).
Figure 3. Low Voltage Warning (VIN = 6.9V)

Figure 4. Low Voltage Warning (VIN = 6.5V)

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AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control
Quick Start Guide
1 Scrolling Mode 1.1 Activate Scrolling Mode by connecting batteries, plugging in the ARDUINO control board to the USB interface for power, or pressing the Reset button. 1.2 Scrolling Mode showcases LEDs (D1~D16) gradually brightening and dimming.

Figure 5. Scrolling Mode

Figure 6. Scrolling Mode
2 LED Open Circuit Detection Mode 2.1 Enter LED Open Circuit Detection Mode during Scrolling Mode by long-pressing SW14 for over 1 second. 2.2 Set a specific LED as an open circuit by toggling the "LED Open Circuit Setting SW1/SW3" to the OFF position, the corresponding LED lights up. 2.3 Press and hold SW14 for more than 1 second returns to Scrolling Mode.

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16-Channel LED Driver With 16-bit APDM Control

Figure 7. LED Open Circuit Test Mode
3 LED Short Circuit Detection Mode 3.1 Enter LED Short Circuit Detection Mode during Scrolling Mode by long-pressing SW13 for over 1 second. 3.2 Set a specific LED as a short circuit by toggling the "LED short Circuit Setting SW2/SW4" to the ON position, the corresponding LED lights up. 3.3 Press and hold SW13 for more than 1 second returns to Scrolling Mode.

Figure 8. LED Short Circuit Detection Mode
4 LED Smart Detection Mode 4.1 Enter LED Smart Detection Mode during Scrolling Mode by long-pressing SW12 for over 1 second. 4.2 Set a specific LED as an open circuit by toggling the "LED Open Circuit Setting SW1/SW3" to the OFF position or as a short circuit by toggling the "LED short Circuit Setting SW2/ SW4" to the ON position, the corresponding LED lights up. 4.3 Press and hold SW12 for more than 1 second returns to Scrolling Mode.

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16-Channel LED Driver With 16-bit APDM Control

Figure 9. LED Smart Detection Mode
5 Sleep Mode 5.1 Enter Sleep Mode during Scrolling Mode by long-pressing SW11 for over 1 second. 5.2 Press and hold SW11 for more than 1 second returns to Scrolling Mode.

Figure 10. Sleep Mode
6 Rext Short Circuit Detection Mode 6.1 Enter Rext Short Circuit Detection Mode by long-pressing SW10 for over 1 second. 6.2 Toggle the "Rext Short to Ground Setting Switch" to ON to set Rext short to ground. 6.3 When Rext is shorted to ground, LED 1 will flicker at a one-second frequency. 6.4 Press and hold SW10 for more than 1 second returns to Scrolling Mode.

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16-Channel LED Driver With 16-bit APDM Control
ON OFF
Figure 11. Rext Short Circuit Detection Mode

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2.
Evaluation Board Schematic

AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Figure 12. Evaluation Board Schematic

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© 2024 Copyright Diodes Incorporated. All Rights Reserved.

1.
Evaluation Board Layout

AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Figure 13. PCB Top Layer View

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Figure 14. PCB Bottom Layer View
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Bill of Materials

AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Location U1, U2

Description
16-Channel LED Driver With 16bit APDM Control

BT1, BT2, BT3 Battery Holder

Manufacturer
Diodes Incorporated
(Diodes)
MYOUNG

Part Number AL58263Q
BH-AAA-B5AA001

Package TSSOP-24EP
-

Capacitor SMD, 10µF/10V X7R

Samsung Electro-Mechanics

CL21B106KPQNNNE

0805

C1, C2, C3, C4, C5, C6, C7, C8, C11

Capacitor SMD, 0.1µF/50V X7R

Murata

GRM21BR71H104KA01L

0805

D33

Schottky Barrier Rectifiers: 40VDC/IF = 3A

Diodes

B340AQ

SMA

D1 ~ D32

Red LED SMD, Forward Current = 40mA

XINGLIGHT

XL-2835SURC-02

SMD2835

R33

Resistor SMD, 0 1%, 1/8 W

YAGEO

AC0805FR-070RL

0805

R34, R35, R37 Resistor SMD, 2k 1%, 1/8 W

YAGEO

AC0805FR-072KL

0805

R1~R32

Resistor SMD, 47 1%, 1/8 W

YAGEO

AC0805JR-0747RL

0805

R36, R38~R50 Resistor SMD, 10k 1%, 1/8 W

YAGEO

AF0805FR-0710KL

0805

SW1~SW4

Button Switch

KINGTEK

DSHP08TSGER

DIP-8

SW5

Button Switch

KINGTEK

DSHP06TS-S

DIP-6

SW6~SW8

Button Switch, SMD, SW_SPST_SKQG

SHOU HAN

MST22D18G2

SMD 3.6 x 9.1

SW9~SW14 Button Switch

XKB Connection

TS-1187A-C-C-B

DIP-6

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1.
System Performance
1. Global Current ControlVDD = 5.5V

AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

Figure 15. Global Current Control vs. Output Current

2. Turn ON/OFF Waveform
VIN VDD IOUT1 IOUT2
Figure 16. Turn ON Waveform

VIN VDD IOUT1 IOUT
(400us/div) Figure 17. Turn OFF Waveform

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AL58263EV1 User Guide
16-Channel LED Driver With 16-bit APDM Control

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References

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