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ST STEVAL-ISB042V1, Руководство пользователя

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3 

Performance charts

3.1 

Baseline power profile (BPP) Rx mode performance

The 

STEVAL-ISB042V1

 evaluation board performance in BPP has been evaluated through a Qi 1.2 BPP certified

transmitter. The overall system efficiency is above 78%.

Figure 14. 

STEVAL-ISB042V1 evaluation board performance: efficiency vs output power in BPP

The output voltage regulation is maintained under the threshold of a 1% difference from no load to full load.

Figure 15. 

STEVAL-ISB042V1 evaluation board performance: output voltage vs output power in BPP

3.2 

Extended power profile (EPP) Rx mode performance

The 

STEVAL-ISB042V1

 evaluation board performance in EPP has been evaluated through a Qi 1.2 EPP certified

transmitter capable of delivering up to 15 W at 10 V output voltage. The overall system efficiency is above 80%.

UM2289

Performance charts 

UM2289

 - 

Rev 2

page 12/26

Содержание STEVAL-ISB042V1

Страница 1: ...i v1 2 and Airfuel SR1 standard The STWLC33 IC is powered by a dual mode Rx coil attached to a 1 5 mm thick plastic fixture The STWLC firmware offers users the flexibility to modify parameters and settings to ensure proper integration of the STWLC33 device with the final application The layout is based on a cost effective 4 layer PCB Figure 1 STEVAL ISB042V1 evaluation board Getting started with t...

Страница 2: ...3 testpoint header VRECT rectified voltage J4 testpoint header selectable user functions GPIO0 GPIO1 GPIO2 GPIO4 GPIO3 do not connect any load during startup INT open drain interrupt output active low EN enable input active low pull on board R4 down 1 2 Receiver mode The easiest way to test the STEVAL ISB042V1 evaluation board in receiver mode is to connect the load to J2 header or optionally to J...

Страница 3: ...hase 1 3 Transmitter mode To test the board in Tx mode you must provide a 5 V power supply to the J2 header ensure STWLC33 is not operating in Rx mode power transfer and switch STWLC33 to Tx mode over I C interface J8 header Procedure Step 1 Connect the bundled USB to the I C bridge UM2289 Transmitter mode UM2289 Rev 2 page 3 26 ...

Страница 4: ...tep 7 Verify the result by checking the operation mode If the label indicates Transmitter mode the kit is ready and a receiver can be placed on the coil sur face Note The coil used in the kit is a Qi PMA receiver coil Using this coil for transmitter mode leads to many compromis es and not all Qi certified receivers will work with this kit For the Tx mode evaluation we recommend to use the STEVAL I...

Страница 5: ...up to 80 Configurable GPIOs for status indication I C interface for communication with the host system Foreign object detection FOD Complete kit IC firmware RoHS compliant 1 5 GUI I C register access Most fields in the GUI application correspond to a single I C register For further details see STWLC33 datasheet on www st com Many registers are accessible in receiver or transmitter mode only Before...

Страница 6: ...er termination consists of two steps writing the EPT register writing 1 in the S_EPT bit in Com register AD conversion results provide immediate VRECT and VOUT voltages as well as die temperature and output cur rent during power transfer RXID and PRMC_ID registers become active after wireless standard detection and provide an easy to read self ID either Qi ID or PMA ID If the STWLC33 receiver is p...

Страница 7: ...attern type or data type responses are supported Figure 8 GUI Rx mode Qi Proprietary packets sub tab 1 5 2 Tx mode registers After entering the mode as described in 1 3 Transmitter mode the TX mode tab lets you monitor the following registers Status_Tx INT_Tx INT_Enable_Tx INT_Clear_Tx The GUI directly reads or writes the target register UM2289 GUI I C register access UM2289 Rev 2 page 7 26 ...

Страница 8: ...ely for baseline power profile BPP operation and for extended power profile EPP BPP values are loaded in the registers and subsequently updated if EPP is negotiated STWLC33 automatically terminates the power transfer if the load is below a certain threshold for a certain period of time By default this feature is eliminated by setting the lowest possible current and the longest possible time Note Q...

Страница 9: ...res that the receiver automatically terminates the power transfer if the load is below a certain threshold for a certain period of time If the power transfer termination is controlled by the host system the STWLC33 feature can be eliminated by setting zero current and maximum possible time Figure 11 GUI PMA configuration tab 1 6 3 Platform NVM configuration This tab allows assigning GPIO functions...

Страница 10: ...diode D6 is controlled by GPIO2 pin Figure 12 GUI platform configuration tab 1 6 4 Generic load save NVM access The NVM tab allows the backup of the current NVM configuration into a file or loading a new one from a file Figure 13 GUI NVM tab UM2289 GUI NVM configuration access UM2289 Rev 2 page 10 26 ...

Страница 11: ...e transformation ratio The transmitter circuits and the Tx coil are designed to operate within the expected optimal range in which the Rx coil and VOUT voltage should fit If the configured VOUT voltage is too high or too low it shifts the whole system out of the optimal range The right VOUT voltage for the STEVAL ISB042V1 evaluation board is roughly 4 to 5 5 V with 5 W transmitters and 8 to 10 V w...

Страница 12: ...PP The output voltage regulation is maintained under the threshold of a 1 difference from no load to full load Figure 15 STEVAL ISB042V1 evaluation board performance output voltage vs output power in BPP 3 2 Extended power profile EPP Rx mode performance The STEVAL ISB042V1 evaluation board performance in EPP has been evaluated through a Qi 1 2 EPP certified transmitter capable of delivering up to...

Страница 13: ... and 1 5 from no load to full load Figure 17 STEVAL ISB042V1 evaluation board performance output voltage vs output power in EPP 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 0 2 4 6 10 12 14 16 Rx Output voltage V 8 RxOutput power W 3 3 TX mode performance The STEVAL ISB042V1 evaluation board performance in Tx mode has been evaluated through the STEVAL ISB043V1 wearable receiver The overall system ...

Страница 14: ... ISB042V1 evaluation board performance efficiency vs output power in TX mode 0 10 20 30 40 50 60 70 80 0 500 1 000 1 500 2 000 2 500 3 000 Efficiency Rx Output Power W UM2289 TX mode performance UM2289 Rev 2 page 14 26 ...

Страница 15: ...GP3 GP4 1 2 J5 PGND VIOFLASH 1 2 3 4 5 6 7 8 9 10 11 12 J4 Header 12 PGND V18 GP0 GP1 GP2 GP3 GP4 1 2 J3 PGND VRECT VRECT 1 2 J2 PGND VOUT VOUT 1 2 J6 PGND 1 2 3 T1 FDV303N 1 2 D6 1k5 R8 GP2 P 1uF 6 3V C14 VS2 BST2 BST1 1 2 3 J8 Header 3 PGND SDA SCL 1 2 3 4 5 6 7 8 J7 Header 4X2 PGND Rx RNTC PGND V18 VS2 12V D4 D Zener 1 2 P3 VIOFLASH V18 GND DP DM VBUS SHIELD J1 PGND VOUT 1 2 P9 SCL A3 SDA B3 IN...

Страница 16: ...tor Samsung CL03A104KA3NNNC 9 1 C6 1 μF 6 3 V SMD 0201 Capacitor Samsung CL03A105MQ3CSNH 10 2 C6a C7 100 nF 25 V SMD 0402 Capacitors Murata GRM155R61E104KA87D 11 1 C7a 1 μF 10 V SMD 0402 Capacitor Murata GRM155R61A105KE15 12 1 C14 1 μF 10 V SMD 0603 Capacitor Murata GRM188R61A105MA 13 1 RCL 30 Ω SMD 0805 Resistor Panasonic ERJ P6WF30R0V 14 0 D1 SMD 0402 Any Not assembled 15 2 D3 D4 SOD882 Protecti...

Страница 17: ...assembled 31 1 T1 SOT23 Digital FET Fairchild FDV303 32 0 J1 Any Not assembled 33 3 J2 J3 J5 THT 2 54 mm pitch 2 pin header Any 34 1 J4 THT 2 54 mm pitch 12 pin header Any 35 1 J6 THT 2 54 mm pitch Coil wire con nection Any 36 1 J7 THT 2 54 mm pitch 2x4 pin header Any 37 1 J8 THT 2 54 mm pitch 3 pin header Any 38 1 P3 Soldered Solder option Any 39 1 P9 Open Any Open 40 1 L 8 μH Coil connected to J...

Страница 18: ...6 Board layout Figure 20 STEVAL ISB042V1 top silkscreen and pads Figure 21 STEVAL ISB042V1 copper layer 1 UM2289 Board layout UM2289 Rev 2 page 18 26 ...

Страница 19: ...Figure 22 STEVAL ISB042V1 copper layer 2 Figure 23 STEVAL ISB042V1 copper layer 3 UM2289 Board layout UM2289 Rev 2 page 19 26 ...

Страница 20: ...Figure 24 STEVAL ISB042V1 copper layer 4 UM2289 Board layout UM2289 Rev 2 page 20 26 ...

Страница 21: ...7 References Freely available on www st com 1 STWLC33 datasheet UM2289 References UM2289 Rev 2 page 21 26 ...

Страница 22: ...ocument revision history Date Version Changes 02 Oct 2017 1 Initial release 22 Dec 2017 2 Updated Table 1 STEVAL ISB042V1 bill of materials Added references to the STEVAL ISB043V1 wearable receiver UM2289 UM2289 Rev 2 page 22 26 ...

Страница 23: ...6 2 PMA NVM configuration 9 1 6 3 Platform NVM configuration 9 1 6 4 Generic load save NVM access 10 2 Configuration guidelines 11 2 1 Changing VOUT voltage constraints 11 2 2 Input current limit 11 2 3 Minimal load 11 3 Performance charts 12 3 1 Baseline power profile BPP Rx mode performance 12 3 2 Extended power profile EPP Rx mode performance 12 3 3 TX mode performance 13 4 Schematic diagrams 1...

Страница 24: ...List of tables Table 1 STEVAL ISB042V1 bill of materials 16 Table 2 Document revision history 22 UM2289 List of tables UM2289 Rev 2 page 24 26 ...

Страница 25: ...GUI NVM tab 10 Figure 14 STEVAL ISB042V1 evaluation board performance efficiency vs output power in BPP 12 Figure 15 STEVAL ISB042V1 evaluation board performance output voltage vs output power in BPP 12 Figure 16 STEVAL ISB042V1 evaluation board performance efficiency vs load in EPP 13 Figure 17 STEVAL ISB042V1 evaluation board performance output voltage vs output power in EPP 13 Figure 18 STEVAL ...

Страница 26: ...r the choice selection and use of ST products and ST assumes no liability for application assistance or the design of Purchasers products No license express or implied to any intellectual property right is granted by ST herein Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product ST and the ST logo are trademark...

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