onsemi NCV7685 RGB Lighting Evaluation Board User Manual

NCV7685 RGB Lighting Evaluation Board
User Manual

NCV7685 RGB Lighting Evaluation Board

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onsemi andand other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent- Marking.pdf. onsemi reserves the right to make changes at any time to any products or information herein, without notice. The information herein is provided “as-is” and onsemi makes no warranty, representation or guarantee regarding the accuracy of the information, product features, availability, functionality, or suitability of its products for any particular purpose, nor does onsemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using onsemi products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by onsemi. “Typical” parameters which may be provided in onsemi data sheets and/ or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. onsemi does not convey any license under any of its intellectual property rights nor the rights of others. onsemi products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use onsemi products for any such unintended or unauthorized application, Buyer shall indemnify and hold onsemi and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that onsemi was negligent regarding the design or manufacture of the part. onsemi is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. Other names and brands may be claimed as the property of others.

SECO-NCV7685RGB-GEVB

NCV7685 RGB Lighting Evaluation Board User’s Manuals

Description
SECO-NCV7685RGB-GEVB is an evaluation board for RGB LEDs lighting application with BLE in automotive which driven by NCV7685 and controlled by RSL10. It is also an interior or exterior lighting reference design for tail or ambient lights to realize general sequential or high end pixelated LEDs controlling in-vehicle network. The user can set RGB LED’s color and intensity by mobile APP to show customized information or animation.
In general, the user are prefer to use fixed address in multiple NCV7685 application. It leads to add one more procedure to pre-programming each chips’ address in mass production stage. In addition, it is inconvenient for maintenance in the aftermarket. In firmware of this evaluation board, it use floating address setting method, each time when power on the board, the NCV7685 will be assigned an address which defined by customer, but not locked into OTP registers. The user can realize this function by using either RSL10’s GPIO or IO expender (PAC9655).
In firmware, the driver APIs divided into four levels: Peripheral, Chip, Board and customer application. User can directly include the chips and board APIs in their own project, and modify the application APIs according to their applications. This will fasten develop period to market.
The board conceived for use as a plug and play environment to testing.
Nominal supply voltage is 12 V (Supply voltage range 12-24 V). In switch mode, four fixed animations shown; the RGB LEDs’ color and intensity setting by user mobile APP in BLE mode.

Features

• Plug and Play; Switch and BLE Mode to Show Animations
• 16 RGB LEDs (48 Channels), each Current Programmable Sources up to 60 mA
• Independent PWM Duty Cycle Control for each Channel
• On-Chip 150, 300, 600 and 1200 Hz PWM
• Logarithmic or linear independent PWM dimming
• Diagnostic and Protection against Open Load and Under-Voltage, Over Temperature…
• Dynamic Addressing Method for No-Worries in mass production
• Bluetooth® 5 Certified with LE 2M PHY Support
• Rx Sensitivity (Bluetooth Low Energy Mode, 1 Mbps): -94 dBm
• Transmitting Power: -17 to +6 dBm
• Arm Cortex-M3 Processor and LPDSP32
• AEC-Q100 Qualified and PPAP Capable

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EVAL BOARD USER’S MANUAL

Architecture and Key Parts

KEY PARTS

Automotive
RSL10 SIP| System−in−Package, Bluetooth 5 Certified
PCA9655| Remote 16−bit I/O Expander for I2C Bus with Interrupt
NCV8170| Ultra ‐ Low IQ 150 mA CMOS LDO Regulator
NCV891330| 3 A, 2 MHz Low−IQ Dual−Mode Step−Down Regulator for Automotive

SECO-NCV7685RGB-GEVB

Operations of NCV7685 RGB LEDs Board
After power on, the board shows the “Welcome” animation, then according to the setting of the switch, the board show four kinds of fixed animations or come into BLE  mode. The functions and operations descripted as below figures:

Switch Setting:
SECO-NCV7685RGB-GEVB

Status Indicator Mode:
Keep all Switches off; the board comes into status indicator mode. Green means works well, orange means warning and red means error. The color of LEDs changes in gradient from green to orange, then to red; and goes back from red to green. This used as the status indicator for dashboard.
Switch Setting:

Second Clock
Keep Switch S1 on and S2, S3, S4 off, every second, only one LED in blue lights up clockwise direction in turn.
Switch Setting:

Flash Mode
Keep Switch S2 on and S1, S3, S4 off, all LEDs flash in  red.
Switch Setting: Fading Mode
Keep Switch S1, S2 on and S3, S4 off, all LEDs fading in green.
Switch Setting:
SECO-NCV7685RGB-GEVB
BLE Mode
Just Keep Switch S4 on and never mind of the setting of
S2, S3, S4, the board comes into BLE mode. User use general mobile App to control LED’s color and intensity for individual or all LEDs. For example, using “Light Blue” in IOS; “BLE Scanner” or “nRF Connect” in Android OS. It shows a green “smell face” firstly, and then changes the color and intensity according to the received five bytes data by BLE. The first three bytes stands for R, G, B values to mix the color, and the fourth data stands for intensity (4 level brightness For V1). The fifth byte stands for LED number, if this value is greater than 0x0f, all LEDs response. Here are several examples:
Examples: (R, G, B, I, LED_No)
(Four level of Intensity, Depends on Firmware)
800080FF00: LED0 in Purple
FF00003F01: LED1 in Red
XXXXXX0010: All LEDs turn off as the he intensity is 0 (Never mind RGB’s values) 00BFFFFF10: All LEDs in deep sky blue
Here is an example using “Light Blue” App to control RGB lighting board:

1. Find and choose Peripheral of “NCV7685 RGB Kit”
2. Tap “Send RGB Setting” character
3. Set RGB and Intensity values
4. The board change color, intensity and LED_No

Firmware Setting
Generally, user had better use floating address method in firmware; the configurations can changed in the “ncv7685.h” file. Here are options:

·app_basc.c: Battery level indication handler
·app_bass.c: Battery Service code
·app_config.c: Application configuration source file
·app_customss.c: Bluetooth custom service
·app_msg_handler.c: Customer defined functions and data
·app_trace.c: Trace functions ·ncv7685.
c: APIs of NCV7685 Chip and Board
·app.c: main function

Flow Chart of App.c

Schematic

Assembly

SECO-NCV7685RGB-GEVB
Table 1. BILL OF MATERIALS

Item| Designator| Manufacturer| Comment| Description| Quantity
---|---|---|---|---|---
1| C1. C4. C5.
C8. C9. C10.
C11, C12.
C13. C14.
C15| | 10 V.1COnF| WCAP-CSGP Ceramic Capacitors. 0603|
2| C2| | 25 V. 10 pF| WCAP-CSGP Ceramic Capacitors. 1206|
3| C3| | 25 V. 4.7 pF| WCAP-CSGP Ceramic Capacitors. 1206|
| C6| | 10 V. 10 pF| WCAP-CSGP Ceramic Capacitors. 1206|
5| C7| | 10V. 100 nF| WCAP-CSGP Ceramic Capacitors. 1206|
6| Di| ON Semiconductor| BASI6H| Schottky Barrier Diode.|
7| D3. D4| ON Semiconductor| NTS560| Trench Schottky Rectifier. Low Forward Voltage, 60 V. 5A|
8| J1| | 694106106102| DC Power Jack Connector.
5 A. 24V|
9| J5| | 1.27 mm_SMD_Verticali 10 pin
–| Pin Header VVR-PHD.  pitch 1.27 mm.|
10| Li| | 2.2 pH. 4.7 A| SMT Shielded Power Inductor|
11| LED11,
LED12,
LED13,
LED14,
LED21,
LED22,
LED23,
LED24,
LED31,
LED32,
LED33,
LED34,
LED41,
LED42,
LED43,
LED44| | LRTB GVSG| |
12| R1. R4, R5. R12. R13, R14. R18, R20, R21| | 10 kil (1002) ±1%| Chip Resistor|
13| R2, R3| | 0 si (ORO) ±1%| ‘Chip Resistor|
14| R6. R7. R8.
R9. R23.
R24| | 68 n (68R0) ±1%| ‘Chip Resistor|
15| R10| | 2.7 ki2 (2701) ±1%| Chip Resistor| 1
16| RII| | 10 i-2 (10RO) .±-1%| Chip Resistor| 1
17| R15, R22| | 100 ki2 (1003) ±1%| ‘Chip Resistor| 2
18| R16, R17| | 1.5 ki2 (1501) ±1%| ‘Chip Resistor| 2
19| R25. R26.
R27, R28| | 2 KS-2 (2001) t.I%| ‘Chip Resistor| 4
20| SW1| | 434133025816| 4.2×3.2 mm J-Bend SMD Tact Switch|
21| SW2| | 416131160804| SMD Dip Switch|
22| U1| ON Semiconductor| NCV891330PD33R2G| −| 1
---|---|---|---|---|---
23| U2| ON Semiconductor| PCA9655EMTTXG| −| 1
24| U3, U4,
U5, U6| ON Semiconductor| NCV7685G| −| 4
25| U7| ON Semiconductor| RSL10−SIP| −| 1

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