ST STCC50x1 Manual de usuario

June 2013 DocID023275 Rev 1 1/17

UM1551

User manual

STCC50x1, STCC2540 demonstration board

Introduction

This demonstration board allows the easy measurement of STCC50x1 parameters and the

evaluation of all its functions and operating modes.

Note: The STCC2540 demonstration board is exactly the same, just assembled with the

STCC2540 instead of the STCC50x1 device. For details, please see Appendix B.

Features

USB 2.0 SDP or CDP data pass-through with S3 remote wakeup support or automatic

charging

Permanent USB 3.0 SuperSpeed data pass-through between input and output USB

connector

CDP mode with charging indication after CDP negotiation

DCP modes with charging indication (BC1.2 mode, divider mode, auto-detect mode)

Attach and charging/end-of-charging detection and indication

Resistor-programmable precise current limiter and short-circuit protection

Figure 1. STCC50x1 demonstration board

www.st.com

Contents UM1551

2/17 DocID023275 Rev 1

Contents

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Quick guide and default configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Settings and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Variable resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Jumper selectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

STCC2540 emulation using the STCC50x1 device . . . . . . . . . . . . . . . . . . . . . . . . 6

Schematics diagram description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Auxiliary and indication circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Appendix A Schematic, BOM, and layers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Appendix B STCC2540 demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Quick guide and default configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Jumper and selector settings for default configuration. . . . . . . . . . . . . . . . . . . . . . 14

Board settings and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Variable resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Jumper selectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

DocID023275 Rev 1 3/17

UM1551 Description

Description

Quick guide and default configuration

By default, the board is powered from a USB host (notebook, PC, docking station, etc.)

through the J2 USB connector. No external power supply is necessary.

In this mode, evaluation of all STCC50x1 device features is possible with the following

limitation:

Maximum charging current is limited by the USB host capabilities (typically 500 mA

to 2000 mA).

Jumper and selector settings for default configuration

J5: ON (closed)

SW6: VEXT (1 - 2)

Settings and connections

Variable resistors

Resistor R18

This resistor adjusts the VLDO voltage to verify proper functionality of the attach detector for

the whole VDD operating range. The equation is as follows:

Equation 1

Minimum adjustable voltage is approx. 1.7 V, maximum voltage is close to VEXT

. The VLDO

increases in a counter-clockwise direction.

For externally set VDD voltage, the jumper selector SW6 can be placed in the VEXT position,

connecting VEXT directly to VDD.

Resistor R26

This resistor adjusts the current limiter threshold according to Equation 2:

Equation 2

Minimum current is approx. 400 mA, maximum current is approx. 2700 mA. The current limit

increases in a clockwise direction.

For minimum current, the accuracy is not defined. The host/power supply capability may be

at least equal to the current limiter threshold set by R26.

VLDO

1,2 R18 6,2 15++

----------------------------------------------------- Vk=

ISC 48000

R26 18+

------------------------mA k=

Description UM1551

4/17 DocID023275 Rev 1

Jumper selectors

SW2 to SW4: operating mode (CTLx)

1 - 2 = 1, 2 - 3 = 0 (see Table 1)

SW5: power and data switch enable (EN)

1 - 2 = 1, 2 - 3 = 0

1 = enabled, 0 = disabled, VOUT discharge when ATTACH_EN = 0 (see Ta ble 2)

SW1: attach detector enable (ATTACH_EN)

1 - 2 = 1, 2 - 3 = 0

1 = enabled if EN = 0 (see Table 2), 0 = disabled

The control inputs (CTL1 - CTL3, EN, ATTACH_EN) are also available on control connector

J6. If this connector is used, the jumper caps from SW1 to SW5 must be removed.

Table 1. CTLx truth table(1)

1. The VOUT discharge pulse is also intentionally omitted for transitions 010 <-> 011, 110 <-> 011.

SW4

(CTL1)

SW3

(CTL2)

SW2

(CTL3) Mode Note

0 0 0 Power and data switch turned off Continuous VOUT discharge

110S0SDP No VOUT discharge pulse on

transition 110 <-> 010

0 1 0 S3 SDP with remote wakeup

1 1 1 S0 CDP

No VOUT discharge pulse on

transition 111 <-> 011 for low

speed devices

011

S3 CDP with remote wakeup for low

speed devices / DCP auto-detect for

full-speed and high-speed devices

Automatic switch to DCP

auto-detect mode also after

a device detach

0 0 1 DCP auto-detect

1 0 0 DCP BC1.2

1 0 1 DCP divider

Table 2. EN and ATTACH_EN truth table

SW5 (EN) SW1 (ATTACH_EN) Attach detector Continuous VOUT

discharge

0 0 Disabled Yes

0 1 Enabled No

1 X Disabled No

DocID023275 Rev 1 5/17

UM1551 Description

SW6: attach detector power supply (VDD) selector

1 - 2 = VEXT (J4), 2 - 3 = VLDO

Default position: VEXT

This selector allows to power the VDD either from onboard adjustable LDO or from external

voltage connected to J4 (VEXT).

If the VDD is powered from VEXT (no matter if directly or using onboard LDO), there should

be an external pull-up resistor to VDD connected to the CHARGING/ATTACH output to

ensure its proper function in the case of VIN turned off.

Jumper

J5: VBUS to VEXT connection

Default position: ON

Set to OFF if the attach detector may be powered from an independent power supply.

Connectors

Connector J2

USB 3.0 (USB 2.0 compatible) standard A male (plug) connector to connect the

demonstration board to the host (PC, notebook, docking station, etc.) USB port either

directly or using any standard A male to standard A female USB expansion cable.

Connector J3

USB 3.0 (USB 2.0 compatible) standard A female (receptacle) connector to connect the

peripheral device to the demonstration board.

Connector J4

Screw terminal to connect the demonstration board to high current power supply

(4.75 - 5.25 V, 2.8 A or more) to evaluate highest current DCP charging modes

(e.g. universal charger mode).

Warning: To prevent damage to the USB host and/or the external power

supply, do NOT power the demonstration board from the USB

host (through J2) and from external supply (through J4)

simultaneously.

Connector J6

Control connector (CANON15) to set the STCC50x1 inputs remotely and also to remotely

sense the status of its indication outputs.

If this connector is used, the jumper caps from SW1 to SW5 must be removed to allow

remote setting of STCC50x1 inputs. No pull-up/pull-down resistors are provided on

ATTACH_EN and CTLx inputs!

On EN, an internal pull-down resistor of 250 ktyp. is provided in the STCC50x1 device.

Description UM1551

6/17 DocID023275 Rev 1

STCC2540 emulation using the STCC50x1 device

This STCC50x1 device can be used also for evaluating the performance of the STCC2540

device using following settings:

J5 = ON (VIN and VDD are powered from the same supply)

SW6 = VEXT (VDD = VIN)

SW1 = GND (attach detector disabled)

In this configuration the STCC50x1 device is functionally equivalent with the STCC2540

device with following remarks:

There is an internal 250 kpull-down resistor on EN input, which is not present in the

STCC2540 device.

The current consumption is slightly higher (because of the attach detector and EN pull-

down resistor).

For the STCC5011 device, the DCP divider mode is set to 1 A instead of 2 A.

Schematics diagram description

Power supply

The core of the board is the USB charging controller STCC50x1. Its VIN is powered from

either VBUS (power from USB host) through the J2 connector or from VEXT (external 5 V

supply) through J4. To evaluate the performance of dedicated charger mode, a direct supply

path from VEXT to VIN can be created by jumper J5.

To evaluate the performance of the STCC50x1 attach detector within the whole VDD supply

voltage range, an LDO U4 in typical configuration is used. Its output voltage, VLDO, can be

adjusted by R18 in the range of approx. 1.7 V to approx. 5 V.

For higher or external (independent on VIN) VDD, the jumper selector SW6 may be set to the

VEXT position, the jumper J5 may be open (off) and the requested VDD can then be

connected to J4 (VEXT).

Table 3. J6 pinout

Pin number Connection Pin number Connection

1 ATTACH_EN 9 VIN

2 EN (internal pull-down resistor) 10 VIN

3CTL111V

4CTL212GND

5CTL313GND

6GND14V

7 CHARGING/ATTACH 15 VDD

8FAULTShield GND

DocID023275 Rev 1 7/17

UM1551 Description

If the VDD is powered from VEXT (no matter if directly or using onboard LDO), there should

be an external pull-up resistor to VDD connected to the CHARGING/ATTACH output to

ensure its proper function in the case of VIN turned off.

Auxiliary and indication circuits

Test points

All the important signals are available on test points.

The DP_IN, DM_IN, DP_OUT and DM_OUT signals are isolated from the high speed USB

bus by 10 kresistors. The purpose of these test points is to verify DC values and various

detection/negotiation processes only, not to evaluate the AC performance of the STCC50x1

device.

The AC performance of the USB data switch (eye-diagram tests for instance) can, of

course, be evaluated using the demonstration board USB connectors J2 and J3 when the

board is configured to SDP mode (CTLx = 110, EN = 1) and nothing connected to TP14 -

TP17.

The sensing test points TP18 and TP19 allow measurements of RDS (on) using a Kelvin

connection.

LEDs

The board is equipped with indication LEDs to allow easy visual verification of these vital

signals: VIN, FAULT, CHARGING/ATTACH, VOUT

The VOUT LED is isolated from the VOUT line by Q1 to prevent false attach detection caused

by LED current.

Decoupling components

The capacitors C1, C2, C3 and C4 are recommended decoupling components for the

STCC50x1 device. They are recommended values, types and placements and can be used

as a guide for application design.

Schematic, BOM, and layers UM1551

8/17 DocID023275 Rev 1

Appendix A Schematic, BOM, and layers

Figure 2. Schematic of STCC50x1 demonstration board

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UM1551 Schematic, BOM, and layers

DocID023275 Rev 1 9/17

Table 4. Bill of material

Qty. Component Device Value Parts Manufacturer/supplier

5 Ceramic capacitor M/16V/X7R/0805(1) 1.0 µF C1, C2, C3, C7, C8 Murata

1 Electrolytic capacitor EEEFK1A151P 150 µF C4 Panasonic

1 Tantalum capacitor M/16V/B(2) 10 µF C6

2 LED HSMG-C170 D1, D4 AVAGO Technologies

1 LED HSMH-C170 D2 AVAGO Technologies

1 LED HSMY-C170 D3 AVAGO Technologies

1 USB3.0 connector GSB316441CEU A type, plug J2 Amphenol

1 USB3.0 connector USB3-A-S-S-TH A type, receptacle J3 Samtec

1 Terminal block ARK210/2EX J4 GM® ELECTRONIC

1 Pin header 2r x 5p PLD-10S 2.54 mm, straight, male J5 GES®ELECTRONICS

1 Connector DZZ-15BCNS-1 CANON, female J6 HSUAN MAO TECHNOLOGY CO.,LTD

1 FET BSS138 Q1

1 Resistor J/0805(3) 18 kR1

1 Resistor J/0805(3) 6.2 kR16

1 Resistor J/0805(3) 15 kR17

1 Surface mount trimmer 3314G-1-503E 50 kR18 BOURNS®

4 Resistor J/0805(3) 10 kR19, R20, R21, R22

2 Resistor J/0805(3) 100 kR2, R3

1 Surface mount trimmer 3314G-1-104E 100 kR26 BOURNS

4 Resistor J/0805(3) 1.0 kR9, R10, R11, R12

6 Pin header 1r x 3p PLS-03S 2.54 mm, straight, male SW1, SW2, SW3, SW4, SW5, SW6 GES ELECTRONICS

6 Jumper JUMPER/0 2.54 mm Accessories (SW1, SW2, SW3,

SW4, SW5, SW6) GES ELECTRONICS

2 Pin header 1r x 4p SIL40PZ / 4 2.54 mm, straight, female (TP7-TP8-TP9-TP13), (TP5-TP6-

TP11-TP12) GM ELECTRONIC

Schematic, BOM, and layers UM1551

10/17 DocID023275 Rev 1

1 Pin header 1r x 3p SIL40PZ / 3 2.54 mm, straight, female (TP1-TP2-TP3) GM ELECTRONIC

8 Pin header 1r x 1p SIL40PZ / 1 straight, female TP4, TP10, TP14, TP15, TP16,

TP17, TP18, TP19 GM ELECTRONIC

1 IC

STCC5011,

STCC5021 or

STCC2540

U1 STMicroelectronics™

1 IC ST715MR U4 STMicroelectronics

1. SMD … tolerance / voltage / size.

2. SMD … tolerance / size.

3. SMD … tolerance / voltage / dielectric / size.

Table 4. Bill of material (continued)

Qty. Component Device Value Parts Manufacturer/supplier

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