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DRV8308: DRV8308 - SPI reading problem.
Part Number: DRV8308At start I read 2A register - default value is 0x018 but I read 0x08.For a test purpose I write to the register 0x07write 0x07 - read 0x03write 0x0F - read 0x07write 0x09 - read...
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RE: DRV8412: DRV8412 heating without load
Hello Rick,The input PWM signal is of 3.3V with adjustable duty cycle. The output signals are unstable DC I will share the photos, currently I am sharing the schematic of my design please have a look...
View ArticleDRV8412: DRV8412 heating without load
Part Number: DRV8412I have a designed a circuit with DRV8412 for TEC which can up to 6A at 12VDC, I have configured it to parallel full mode with LC filter connected at the output. The problem I am...
View ArticleDRV8301: Can senseless startup without MOTOR IDENTIFICATION ?
Part Number: DRV8301Hi,Can I design BLDC speed controller without HALL sensor and customer might not know the motor parameter such as Ls_d, Ls_H, Rs, Pole Pair number etc ? If not, can end users or...
View ArticleBLDC motor identification angle
Hello, I hope anyone help me, please I am using Kelly controller KLS6022H and BLDC HPM3000 MotorI followed the steps of making identification angle of the motor but it didn't work.Every time gives me...
View ArticleRE: BOOSTXL-DRV8320H: Voltage on charge bump pins of DRV8320RH are not...
Hi Xiaoqing, Yes, this is normal. In the DRV832x, CPH and CPL are using to create VCP by charging a capacitor and moving the charge to the VCP capacitor. The VCP voltage should remain constant. The...
View ArticleRE: gate driver mosfet N and P 100% CONTINUOUS
Hi Milordy, It is possible, but it may be difficult depending on the ground plane. A preheater may be required.
View ArticleRE: DRV8308: DRV8308 - SPI reading problem.
Hi Evgeny7, Would you please provide the same transactions using a scope instead of a logic analyzer?
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RE: DRV8308: DRV8308 - SPI reading problem.
I'll try. I should get 4 channel scope.The first picture - reading from the register 0x2A.The second one - reading data 0x09 from the register 0x07As we see the clock signal is good but the SDATO pin...
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RE: Mosfet driving problem
Hello Ankan,Thanks for the reply.Peltier is connected after L1 and L2. I am using IRF9540 (P channel), P30NF10 (N channel) mosfets.1. Waveform before L12. Waveform before L23. Waveform after L14....
View ArticleDRV10987: speed feedback
Part Number: DRV10987hi, i saw that in the firmware for drv10987 you use the function Get_SPD_Feedbacki attached the function here:int Get_SPD_Feedback(){unsigned int Temp;Temp =...
View ArticleDRV10983: Can i drive motor with DRV10983 and using launch pad of MSP430 ?
Part Number: DRV10983hello ,I am kalpesh. I am new in TI . First time i used ti development tool please help me . I want basic tutorial so i can install software and used my msp430 and DRV10983....
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RE: BOOSTXL-DRV8320H: Voltage on charge bump pins of DRV8320RH are not...
Hi Rick, Thank you for quick reply. It almost solved my doubt. CPH and CPL of DRV8320 are corresponding to CP1 and CP2, rather than BST_x of DRV8302, from which I also measured similar waveforms...
View ArticleRE: DRV8301: Can senseless startup without MOTOR IDENTIFICATION ?
You can design BLDC controller without HALL sensor and need not know its parameters. Control range may be restricted. While it is possible to enter data using cell phone, we dont have any example to...
View ArticleRE: DRV8301: Can senseless startup without MOTOR IDENTIFICATION ?
Thanks for your quick reply. I have one more question regarding sensor-less full load start for eBike that customers might not know the parameter of their motor parameter even pole number, can...
View ArticleRE: BOOSTXL-DRV8320H: Voltage on charge bump pins of DRV8320RH are not...
Hi Xiaoqing, If CPH is 17V greater than VM, this could create reliability problems. There are usually a few possible causes for this: 1) The measurement is incorrect. A differential probe measure the...
View ArticleRE: BOOSTXL-DRV8301: Compatible with LAUNCHXL-F28069M?
Matt The BoostXL-DRV8301 is indeed compatible with the LAUNCHXL-F28069M, as well as the LAUNCHXL-F28027F LaunchPad Sean
View ArticleRE: motor kit specification
Hi Macro, This depends on what control algorithm do you want to implement. You may only use sensored control for full speed range if you want to implement trapezoidal control algorithm. The example...
View ArticleRE: DRV8301: Can senseless startup without MOTOR IDENTIFICATION ?
1. It's very tough to start the motor with full load stably using sensorless instaSPIN-FOC, especially for eBike applications regardless of you known the motor parameters. Sensored-FOC is more...
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