ST X-NUCLEO-DRP1M1 Manuale utente

Introduction

The X-NUCLEO-DRP1M1 expansion board allows evaluating the features of TCPP03-M20 and the USB Type-C™ features and

protections required for VBUS and CC lines suitable for dual role power (DRP) applications.

The expansion board can be stacked on top of any STM32 Nucleo-64 with Power Delivery (UCPD) peripheral embedded in their

microcontrollers.

The X-NUCLEO-DRP1M1 effectively demonstrates the dead battery and Sink operation, thanks to the integrated ST715PU33R

LDO linear regulator that supplies the connected STM32 Nucleo development board. It also demonstrates USB Type-C™

Source operation when a compatible external Source is connected to the board.

Moreover, the expansion board allows Dual Role Data functionalities for sourcing devices.

The X-NUCLEO-DRP1M1 is compliant with the USB Type-C™ and Power Delivery specifications 3.1 standard power range

(SPR) and is USB-IF certified as a 100 W DRP solution supporting programmable power supply (PPS).

The companion software package (X-CUBE-TCPP) contains the application examples for development boards embedding

UCPD-based microcontrollers (NUCLEO-G071RB, NUCLEO-G474RE and NUCLEO-G0B1RE).

Figure 1. X-NUCLEO-DRP1M1 expansion board

Getting started with the X-NUCLEO-DRP1M1 USB Type-C™ Power Delivery

dual role port expansion board based on TCPP03-M20 for STM32 Nucleo

UM2891

User manual

UM2891 - Rev 1 - June 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1Getting started

1.1 Overview

The X-NUCLEO-DRP1M1 expansion board features:

• Support for all USB Type-C™ Power Delivery SPR profiles up to 100 W

• Management of Dual Role Data/Power configuration

• USB 2.0 Dual Role Data compliant according to STM32 USB data capability

• 8/20 μs surge, overvoltage, overcurrent protection and discharge for VBUS

• Short to VBUS protection for CC1 and CC2 configuration channel pins

• ESD protection (IEC61000-4-2 level 4 ± 8 kV contact discharge) for CC1, CC2, D+ and D-

• Overvoltage, overcurrent protection and discharge for VCONN

• Common mode filter on D+/D- data lines

• Three power modes to optimize current consumption

• Compliant with Programmable Power Supplies (PPS)

• Free comprehensive development firmware library

• Compliant with STM32 Nucleo-64 boards featuring an STM32 with UCPD

The X-NUCLEO-DRP1M1 interfaces three main blocks for USB Type-C™ Power Delivery dual role port (DRP):

• Type-C™ connector

• the power delivery controller embedded into the STM32 (UCPD) on the STM32 Nucleo development board

and

• the power management

It also provides USB 2.0 data line interface connection to the STM32 on the STM32 Nucleo development board.

The bill of materials has been optimized without compromising the protection:

• VBUS line: overvoltage, overcurrent and surge protections

• CC lines: overvoltage, overcurrent and ESD protections

• Data lines: ESD protection and EMI filtering

The embedded TCPP03-M20 features comply with the Power Delivery protocol:

• CC lines switch matrix for VCONN

• VBUS discharge

• VCONN discharge

Fault mode report and three optimized power modes are also available.

All these features are managed through I²C communication.

VBUS current analog readout is also possible with STM32 ADC connected to the TCPP03-M20 differential

amplifier output.

UM2891

Getting started

UM2891 - Rev 1 page 2/27

Figure 2. X-NUCLEO-DRP1M1 board on top of STM32 Nucleo development board block diagram (full lines

identify Type-C™ connector connections/dotted lines identify internal connections)

UCPD

STM32

Firmware

I2C

USB Type-C™

connector

VBUS

Power bus

Provider path

CC1/CC2 lines

D+/D- lines

Configuration channels

N-MOSFET

SOURCE

N-MOSFET

SINK

Consumer path

USB 2.0

Data lines

Protections

NUCLEO board

X-NUCLEO-DRP1M1 board

ADC

TCPP03-M20

1.2 Hardware architecture

The X-NUCLEO-DRP1M1 expansion board can be used with any STM32 Nucleo-64 development board

embedding the UCPD peripheral (mainly NUCLEO-G071RB, NUCLEO-G474RE and NUCLEO-G0B1RE).

The expansion board must be plugged on the matching pins of the development board CN7 and CN10 ST

morpho connectors.

When plugged onto an STM32 Nucleo development board, the expansion board can be supplied in two different

ways:

• through the STM32 Nucleo ST-LINK supply using the development board internal LDO

• by the VBUS provided when a Source is plugged into the CN1 USB Type-C™ connector and thanks to the

integrated ST715PU33R LDO linear regulator (U2) that supplies the entire system, which supports Dead

Battery operation mode and source powered mode.

UM2891

Hardware architecture

UM2891 - Rev 1 page 3/27

Figure 3. X-NUCLEO-DRP1M1 main functional blocks (top view)

1-2. Morpho connectors

3-6. Arduino connectors

7. Type-C™ connector

8. Provider path screw connector plus LED

9. Consumer path screw connector plus LED

10. 3.3 V LED

11. Jumpers for self-powering (LDO out plus NRST)

12. TCPP03-M20 - USB-C DRP protection

13. ECMF02-2AMX6 - common mode filter plus ESD protection

14. ESDA25P35-1U1M - TVS diode

78 9

12 13

UM2891

Hardware architecture

UM2891 - Rev 1 page 4/27

Figure 4. X-NUCLEO-DRP1M1 main functional blocks (bottom view)

1. Morpho connector

2. Morpho connector

3. OVP threshold solder bridges (R0, SH2, SH3, SH4, SH5)

4. ST715PU33R high input voltage LDO linear regulator (U2)

5. STL40DN3LLH5 dual N-channel 30 V, 0.016 Ohm, 11 A STripFET H5 Power MOSFET (Q1 and Q2)

6. Current sense shunt resistor

1.3 Type-C™ connector

The USB Type-C™ receptacle (CN1) gathers the VBUS path and the main connections, such as CC lines and

USB 2.0 data lines (DP, DM), before dispatching data to the main functional blocks.

UM2891

Type-C™ connector

UM2891 - Rev 1 page 5/27

Figure 5. Type-C™ receptacle (CN1) and ESDA25P35-1U1M TVS diode (D1)

VBUS

GNDGND

GND

330pF 50V

CN1

ConUSB31_632723300011_recept

CC1

Dn1

Dp1

GND1

GND2

GND3

GND5

A12

GND6

B12

SBU1

SHELL1

SHELL2

SHELL3

SHELL4

SHELL5

SHELL6

SSRXn1

B10

SSRXn2

A10

SSRXp1

B11

SSRXp2

A11

SSTXn1

SSTXp1

VBUS1

VBUS2

VBUS4

Dn2

Dp2

GND4

SBU2

SSTXn2

SSTXp2

VBUS3

CC2

C13

2.2uF 50V

330pF 50V

TP3

TP1

TP5

TP4

TP2

ESDA25P35-1U1M

CC1c

CC2c

An ESDA25P35-1U1M TVS diode (D1) has been integrated to protect the VBUS power line and, consequently, the

entire system against electrical over-stress (EOS) when a Source/Sink is connected through the USB-C cable.

330 pF C1 and C2 capacitors and 2.2 µF C13 capacitor are required by the USB Power Delivery standard.

C13 capacitor also ensures a good system robustness.

1.4 USB 2.0 data path and configuration settings

The X-NUCLEO-DRP1M1 expansion board allows STM32 Nucleo development boards that feature a USB2.0

peripheral to expose the D+/D- lines on the Type-C™ receptacle (CN1).

Most STM32 Nucleo-64 development boards feature this functionality on the ST morpho connector CN10-12 and

CN10-14 pins, whereas NUCLEO-L412RB-P, NUCLEO-L433RC-P, NUCLEO-L452RE-P and NUCLEO-L476RG

boards map USB2.0 data pins on CN10-33 and CN10-17 pins.

Two couples of resistances has been implemented and connected to the ECMF02-2AMX6 (U3) USB2.0 data lines

protection to extend the use of this peripheral to all STM32 Nucleo-64 development boards.

UM2891

USB 2.0 data path and configuration settings

UM2891 - Rev 1 page 6/27

Figure 6. USB2.0 data lines protection ECMF02-2AMX6 (U3) and resistor setup

GND

DP_other

CC1_G4

ESD

ESD ESD

ESD

ECMF02-2AMX6

D-

GND

D-1

D+1

D+

SH11

R19 0

SH13

R20 0

D+ D+ecmf

D- D-ecmf

90 ohms

ZDiff

90 ohms

ZDiff

By default, the X-NUCLEO-DRP1M1 mounts R19 and R20 resistors fitted to guarantee USB2.0 compatibility to

all the main microcontroller families, but, for the L4 family (NUCLEO-L412RB-P, NUCLEO-L433RC-P, NUCLEO-

L452RE-P and NUCLEO-L476RG) only, they must be removed and replaced by SH11 and SH13 solder bridges.

1.5 ST morpho and Arduino V3 connectors

The figure below shows the X-NUCLEO-DRP1M1 expansion board ST morpho and Arduino UNO V3 connectors,

detailing the main connections, functions, and configuration settings.

Figure 7. ST morpho and Arduino V3 connectors

3.3V

GND

5 V

I2C1_SCL

I2C1_SDA

NRST

CC1_G4 DP

CC1

ADC_Vbusc

ADC_Prov

ADC_Cons

CC1_G0

ADC_Isense

CC2

DP_other

ENABLE

FLGN

SSQ-108-03-F-S

R24 0

ESQ-119-14-T-D

R27 0

R25 0

SSQ-106-03-G-S

R26 0

ESQ-119-14-T-D

R31

SSQ-108-03-F-S

8 1

CC2_G0

CC2_G4

3.3V

GND

5 V

I2C1_SCL

I2C1_SDA

NRST

ADC_Vbusc

ADC_Prov

ADC_Cons

ADC_Isense

CC2

DP_other

ENABLE

FLGN

R27 0

R26 0

R31

SSQ-110-03-F-S

CC2_G0

CC2_G4

CN10

CN9

CN5

CN6

CN7

CN8

CC lines are connected to the UCPD connection of the ST morpho connectors (CN7, CN10). Two configurations

are possible according to the ST morpho connectors on the STM32 Nucleo development board. To limit pin count

on the STM32, unused lines can be disconnected by removing R26/R25 or R24/R27.

TCPP03-M20 (U1) FLGN pin corresponds to an STM32 wake-up pin to optimize power consumption when no

Type-C™ cable is connected. TCPP03-M20 OFF/hibernate/low power modes can be used with STM32 sleeping

modes. STM32 is then woken up when a voltage is present on VBUS thanks to the FLGN pin.

TCPP03-M20 ENABLE pin is managed by an STM32 GPIO. Consumption is almost null in hibernate mode (only

the I2C interface dynamic current consumption occurs when using the I2C bus).

UM2891

ST morpho and Arduino V3 connectors

UM2891 - Rev 1 page 7/27

1.6 I2C bus

An I2C communication is implemented between the STM32 Nucleo development board master port and the

TCPP03-M20 (U1) slave port through SCL and SDA pins.

TCPP03-M20 I2C default address is 0x68. It can be changed to 0x6A by closing SH16 solder bridge and

unsoldering R28; level high is then connected to TCPP03-M20 I2C_ADD pin.

I2C pull-up 1 kΩ resistors (R11 and R12) are present on the X-NUCLEO-DRP1M1.

1.7 Voltage/current analog sense connection to STM32 ADC

The X-NUCLEO-DRP1M1 features three voltage senses connected to the STM32 ADC:

• ADC_VBUSc: measures voltage on VBUS; it is mandatory to ensure system operation (as example, for

vSafe0V measurement)

• ADC_Prov: for information on the provider path voltage

• ADC_Cons: for information on the consumer path voltage

Voltage dividers (ratio 6) are compatible with 24 V DC voltages.

Figure 8. VBUS voltage sense for STM32 ADC

ADC_VBUSc

40.2k

C12

200k

The X-NUCLEO-DRP1M1 implements the analog current sense output of TCPP03-M20 (U1, IANA pin) and

connects it to the STM32 ADC (ADC_Isense).

The TCPP03-M20 has an internal differential amplifier (42 V/V) which measures the current flowing though R5 (7

mΩ). As the current measurement is bi-directional, it is functional for both Source and Sink.

Capacitor footprints (C9, C10, C11 and C12) have been added for potential filtering on analog senses.

1.8 Consumer and provider path

Consumer and provider path can be connected to VBUS thanks to two dual STL40DN3LLH5 N-MOSFETs (Q1 and

Q2) controlled by TCPP03-M20 gate drivers (U1- GDCs, GDCg, GDPs and GDPg pins).

UM2891

I2C bus

UM2891 - Rev 1 page 8/27

Figure 9. Consumer and provider path

3.3V

GND

SINK

SOURCE

ADC_Cons

ADC_Prov

FLGN

200k

40.2k

200k

CN2

1725656

40.2k C9

Q2B

STL40DN3LLH5

Q1A

STL40DN3LLH5

CN3

1725656

Q2A

STL40DN3LLH5

R10

47K

D10

TCPP03-M20

ENABLE

FLGn 19

SCL

SDA

I2C_ADD

CC1c

CBIAS

CC2c

GND

VSENSE

ISENSE

VBUSc

GDCs 8

GDCg 7

GDPs 6

GDPg 5

IANA

CC2

VCC / VCONN 2

CC1

exp pad GND

C10

Q1B

STL40DN3LLH5

CC1c

CC2c

When TCPP03-M20 is OFF and, by default, at turn-on, the consumer path is closed in order to power the system

when the battery is fully depleted.

Note: TCPP03-M20 does not allow Q1 and Q2 closed at the same time to avoid any provider and consumer

connection.

Voltage presence on the provider and consumer path is indicated by a LED (D7 blue on the provider path and

D6 red on the consumer path). These LEDs does not indicate the N-MOSFET state. For example, Source LED

D5 can be ON indicating voltage presence on the provider path but Q2 can be OFF without connection of the

provider path on VBUS.

You can access the consumer path and provider path thanks to CN2 and CN3 screw connectors. Additional

protections (transient or free wheel diode) can be added on D9 and D10 footprints compatible with ESDAP series

(from ESDA7P120-1U1M to ESDA25P35-1U1M).

Inrush current is managed by TCPP03-M20 gate driver charge pump output current associated to

STL40DN3LLH5 drain to gate MOSFET capacitance (also called Miller capacitance or reverse transfer

capacitance). This association avoids any potential parasitic OCP triggering due to inrush current generated

by cSnkBulk (between 1 µF and 10 µF) as defined by USB Power Delivery standard.

When another MOSFET reference is used, C7 and C8 external capacitors can be associated to other MOS

references to avoid OCP trigger due to inrush current, if drain to gate capacitance is too low. The effective drain to

gate capacitance including C7 and C8 must be higher than 20 pF.

When a higher cSnkBulk capacitance is used, Q1 or Q2 must be closed slower and C7 or C8 capacitor must be

mounted and selected with 100 pF to every additional 10 µF on cSnkBulk terminal.

UM2891

Consumer and provider path

UM2891 - Rev 1 page 9/27

1.9 VBUS and CC lines over-current protection

R5 terminal voltage (voltage between TCPP03-M20 and ISENSE) is used for TCPP03-M20 overcurrent protection

on VBUS. When this voltage is higher than 0.042 V, OCP turns on and the consumer and provider paths are

opened.

Table 1. VBUS currents according to shunt resistor

Max. nominal current OCP threshold Shunt resistor R5

0.5 A 0.9 A 47 mΩ

1.5 A 1.9 A 22 mΩ

3.0 A 4.2 A 10 mΩ

5.0 A 6.0 A 7 mΩ (default value)

TCPP03-M20 protects CC1 and CC2 lines against overcurrent (OCP on CC turn-on at 47 mA), in case of

overcurrent when VCONN is used.

When overcurrent fault is detected:

• FLGN falls

• Register 2 is updated

• Recovery word is mandatory to get back to operational system. Recovery words are:

– 0x18 written on I2C register 0 to return to normal mode

– 0x28 written on I2C register 0 to return to low power mode

– 0x08 written on I2C register 0 to return to hibernate mode

The recovery word erases the error register (register 2) but does not connect consumer or the provider path to

VBUS nor VCONN: the corresponding bits must be written to close switch(es) on an additional step.

1.10 VBUS and CC lines overvoltage protection

TCPP03-M20 VBUS overvoltage protection (OVP) threshold is set by a resistive bridge connected to the TCPP03-

M20 (U1) VSENSE pin. When the voltage on VSENSE pin is above 1.16 V, VBUS, OVP turns on, the consumer

and provider paths are opened and register 2 is updated.

On the X-NUCLEO-DRP1M1 expansion board, the resistor connected to VBUS (R6) is set to 10 kΩ. OVP

threshold can be adjusted thanks to the resistor connected to GND. R13 to R17 resistors can be selected with R0,

SH2, SH3, SH4 and SH5.

R0, selected by default, sets the OVP threshold to 22 V. To select another threshold value, R0 must be removed

and the solder bridge that corresponds to the selected voltage must be filled.

When a defective power source plugged onto the Type-C™ connector produces a voltage higher than the

selected OVP threshold, the TCPP03-M20 OVP mechanism controls the external MOSFET and opens the VBUS

line.

UM2891

VBUS and CC lines over-current protection

UM2891 - Rev 1 page 10/27

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