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Bidirectional Buck-Boost Controller with I2C Interface

EVB_RT6190GQW_01

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The RT6190 is a bidirectal Buck-Boost controller designed for USB power delivery (USB-PD). It can deliver up to 140W power with maximum 5A current under VOUT = 28V condition. This document explains the function and use of the RT6190 evaluation board (EVB) and provides information for the evaluation board schematic, layout, and bill of materials (BOM) to suit individual requirements.

General Description

The RT6190 is a bidirectal Buck-Boost controller designed for USB power delivery (USB-PD). It can deliver up to 140W power with maximum 5A current under VOUT = 28V condition. This document explains the function and use of the RT6190 evaluation board (EVB) and provides information for the evaluation board schematic, layout, and bill of materials (BOM) to suit individual requirements.



Performance Specification Summary

The RT6190 is a bidirectal Buck-Boost controller designed for USB power delivery (USB-PD) with an input supply voltage range of 4.5V to 36V in a WQFN-40L 5x5 package. The device is mounted on a four-layer evaluation board (EVB) in size of 110mm x 60mm with 1oz copper thickness.


Table 1. RT6190 Evaluation Board Performance Specification Summary

Key Features

EVB Parameter

Input Range

Input Voltage

12V to 24V

Enable Input Voltage

2V to 24V

ALERT Pin Pull-High Voltage

1.8V or 3.3V

Output Range

Output Voltage

5V to 28V

Maximum Output Current

5A

Maximum Overcurrent Protection

6.5A

Maximum Output Power

140W

Switching Frequency and Package

Operating Frequency

250kHz (typ.) in FCCM

Package

WQFN-40L 5x5



Detailed Description of Hardware

Headers Description and Placement

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一張含有 藍色, 硬碟, 控制台 的圖片

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Carefully inspect all the components used in the EVB according to the following Bill of Materials table, and then make sure all the components are undamaged and correctly installed. If there is any missing or damaged component, which may occur during transportation, please contact our distributors or e-mail us at evb_service@richtek.com.


Test Points

The EVB is provided with the test points and pin names listed in the table below.

Test Point

Pin Name

Expected Waveforms or Voltage Levels on Test Points

J1

VIN

(1) Positive/Negative terminals for input voltage from power supply to EVB in Forward operation.

(2) Positive/Negative terminals for output voltage from EVB to e-load in Reverse operation.

J2

GND

J3

VOUT

Positive terminal for output voltage from EVB to e-load.

J4

GND

(1) Negative terminal of output voltage and Power Path C from EVB to e-load in Forward operation.

(2) Negative terminal of input voltage from power supply to EVB in Reverse operation.

J5

VBUSC

(1) Positive terminal for Power Path C from EVB to e-load in Forward operation.

(2) Positive terminal for input voltage from power supply to EVB in Reverse operation.

J6

GND

Positive/Negative terminals for Power Path A from EVB to e-load.

J7

VBUSA

JP1

I2C

Connection for I2C interface.

GP1

1.8V/3.3V

External power supply for pull-high voltage of ALERT pin.

GP2

GND

Reference voltage for test points.

TP1

PGOOD

Test point for PGOOD measurement.

TP2

ALERT

Test point for ALERT measurement.


Power-up & Measurement Procedure

(1) Forward Operation

  • Connect input power supply with wire as wide and short as possible to J1/J2 terminals.
  • Connect EN to input voltage though R33, but R47 is NC.
  • Connect an external load up to 5A to J4/J5 terminals.
  • Set input voltage = 12V and 10A input current limit of input power supply.
  • Connect I2C to JP1 pin header, and set register by I2C interface:
  • Set 0x0E = 90h to enable RT6190.
  • Set 0x29 = 02h to turn on power path C for VBUSC enabled.
  • Status check when power on sequence finished:
  • VOUT = 5V at J3/J4 terminals.
  • VBUSC = 5V at J5/J4 terminals.
  • 0x1E = 00h and 0x1F = 40h.

(2) Reverse Operation

  • Connect input power supply with wire as wide and short as possible to J5/J4 terminals.
  • Connect EN to input voltage though R47, but R33 is NC.
  • Connect an external load up to 5A to J1/J2 terminals.
  • Set input voltage = 12V and 10A input current limit of input power supply.
  • Connect I2C to JP2 pin header, and set register by I2C interface:
  • Set 0x0C = 52h for power role swap.
  • Set 0x29 = 02h to turn on power path C.
  • Set 0x0E = 90h to enable RT6190.
  • Status check when power on sequence finished:
  • VOUT = 5V at J1/J2 terminals.
  • 0x1E = 00h and 0x1F = 40h.

Noticifacation

(1) For other functions, please refer to RT6190 datasheet for detailed description.

(2) The input and output current should not be higher than 9A due to power dissipation of the input and output current sense resistors are all 1W in 1206 size.



Bill of Materials

Reference

Qty

Part Number

Description

Package

Manufacturer

U1

1

RT6190GQW

Buck-Boost PWM Controller

WQFN-40L 5x5

Richtek

L1

1

7443551470

4.7µH/7mΩ/15A

12.8x12.8x6.2mm

WÜRTH

ELEKTRONIK

L2

1

--

NC

--

--

Q1, Q4

2

SM4037NHKP

N-MOSFET for

High-Side (40V/80A)

DFN5x6A-8_EP

Sinopower

Q2, Q3

2

SM4035NHKP

N-MOSFET for

Low-Side (40V/100A)

DFN5x6A-8_EP

Sinopower

Q5, Q8

2

--

NC

--

--

Q6, Q7

2

--

NC

--

--

QC1, QC2, QA1, QA2

4

SM3430NHQA

N-MOSFET for USBC/A Power Path (40V/36A)

DFN3.3x3.3A-8_EP

Sinopower

D1, D2, D3, D4

4

1N4148WT-7

Diode (100V/0.25W)

(1) External BOOT Voltage for SW1 and SW2

(2) Discharge QC1, QC2, QA1, QA2

SOD-523

Diodes

EC1, EC2

2

--

NC

--

--

EC3, EC4

2

350ARHA101M08X8

100µF/35V

8x3.5mm

APAQ

C1, C2, C32, C33, C36, C38, C39, C40, C41, C42

10

--

NC

--

--

C3, C4, C34, C35, C37

5

0603B104K500CT

0.1µF/50V/X7R/0603

C-0603

WALSIN

C5, C6, C14, C16, C17, C18, C20, C21, C26, C31

10

GRM188R61H105KAALD

1µF/50V/X5R/0603

C-0603

MURATA

C7, C8

2

GRM188R61E475KE11D

4.7µF/25V/X5R/0603

C-0603

MURATA

C9

1

0603N1R0C500CT

1pF/50V/NPO/0603

C-0603

WALSIN

C10

1

0603B332K500CT

3.3nF/50V/X7R/0603

C-0603

WALSIN

C11

1

0603N221J500CT

220pF/50V/NPO/0603

C-0603

WALSIN

C12

1

0603B103K500CT

10nF/50V/X7R/0603

C-0603

WALSIN

C13

1

0603B333K500CT

33nF/50V/X7R/0603

C-0603

WALSIN

C15, C19

2

0603B152K500CT

1.5nF/50V/X7R/0603

C-0603

WALSIN

C22, C23, C24, C25, C27, C28, C29, C30

8

1206X106K500CT

10µF/50V/X5R/1206

C-1206

WALSIN

R1, R2, R3, R4, R7, R8, R33, R34, R35, R43, R44, R45

12

WR06X000PTL

0/0603

R-0603

WALSIN

R9, R10, R11, R12

4

WR06X10R0FTL

10/0603/1%

R-0603

WALSIN

R13

1

WR12X2200FTL

220/1206/1%

R-0603

WALSIN

R14, R18, R32

3

WR06X1003FTL

100k/0603/1%

R-0603

WALSIN

R15

1

WR06W1R00FTL

1/0603/1%

R-0603

WALSIN

R16, R36

2

WR06X1002FTL

10k/0603/1%

R-0603

WALSIN

R17, R31, R37, R38, R39, R40, R41, R42

6

--

NC

--

--

R19

1

WR06X4702FTL

47k/0603/1%

R-0603

WALSIN

R20

1

WR06X5101FTL

5.1k/0603/1%

R-0603

WALSIN

R21, R22, R24, R25

4

WR06X1001FTL

1k/0603/1%

R-0603

WALSIN

R23, R26

2

WR06W2R00FTL

2/0603/1%

R-0603

WALSIN

R29, R30

2

RLM-1632-6F-R010-FNH

10mΩ/1%/1206 for input/output current sense

R-1206

Cyntec

R46

1

--

NC

--

--

RT1

1

--

NC

--

--



Quick Start with RTMCU WRENBOARD

Technical Document Image Preview


The following summarizes the contents of the Richtek MCU bridge board. In addition to hardware kits, one software utilities is needed to be installed for RTMCU_WRENBOARD bridgeboard.

  • Richtek MCU bridge board (RTMCU_WRENBOARD).
  • USB B type to micro 5 Pins cable to connect PC and the MCU bridge board. (optional)
  • RTBridgeboardUtilities.exe.

RTMCU_WRENBOARD Hardware Description

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Function Description

A. Standard USB A plug. It connects to PC directly.

B. Micro 5 pin USB port. It connects to PC by USB cable.

  • It is an alternative to connect RTMCU_WRENBOARD to PC when long distance between PC and Device is needed.

C. White LED Indicator

  • The white LED indicates RTMCU_WRENBOARD command execution.

D. Blue LED Indicator

  • The blue LED indicates I2C (SCL and SDA) are operated in 1.8V.

E. Red LED Indicator

  • The red LED indicates I2C (SCL and SDA) are operated in 3.3V.

F. Red LED Indicator. This button has two functions:

  • To exchange I2C signals between 3.3V and 1.8V.
  • To enable firmware download function.

G. I2C and GND pins

  • I2C pins (SDA, GND and SCL) in 3.3V or 1.8V level depend on user setting.

H. Power pins

  • Power pins with 3.3V and 1.8V. It is suggested to limit the output current within 100mA for each power pins.

I. GPIO

  • User can connect this pin to control device in either function.

The item A/B/C/D/E/G are used for RT6190 EVB.


I2C Control Panel Interface

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After VIN and EN are ready, and press “Scan Device” button, then “Slave Address” will show 0x2C or 0x2D to indicate RT6190 that can receive I2C command.



Typical Applications

EVB Schematic Diagram

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Note:

(1) I2C slave address is 0x2C when R17 = NC, R18 = 100kΩ.

(2) I2C slave address is 0x2D when R17 = 100kΩ, R18 = NC.


Measure Result

Efficiency @ VOUT = 5V

Efficiency @ VOUT = 9V

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Efficiency @ VOUT = 12V

Efficiency @ VOUT = 15V

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Efficiency @ VOUT = 20V

Efficiency @ VOUT = 28V

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Forward Buck Mode Output Ripple Voltage

Reverse Buck Mode Output Ripple Voltage

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Forward Boost Mode Output Ripple Voltage

Reverse Boost Mode Output Ripple Voltage

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Forward Buck Mode Load Transient Response

Reverse Buck Mode Load Transient Response

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Forward Boost Mode Load Transient Response

Reverse Boost Mode Load Transient Response

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Forward Power-On from I2C

Reverse Power-On from I2C

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Forward Power-Off from I2C

Reverse Power-Off from I2C

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Evaluation Board Layout

Figure 1 to Figure 4 are RT6190GQW Evaluation Board layout.

一張含有 圖表 的圖片

自動產生的描述

Figure 1. Top View (1st layer)


Technical Document Image Preview

Figure 2. PCB Layout—Inner Side (2nd Layer)


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Figure 3. PCB Layout—Inner Side (3rd Layer)


一張含有 電子產品 的圖片

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Figure 4. Bottom View (4th Layer)

Title Last Update Share Download
Evaluation Board User Guide 2023/05/11
Bill of Materials 2023/05/11
Schematic 2023/05/11
Gerber File 2023/05/11
RT6190
RT6190

RT6190 是針對 USB-PD 應用的需要開發的 4 開關雙向 Buck-Boost 控制器,可在 4.5V~36 V 輸入電壓範圍內工作,輸出電壓可在 3V~36V 進行調節。其控制架構為峰值電流模式,能以可程式控制的恒流、恒壓輸出支援 USB-PD 3.0 SPR 模式和 3.1 EPR 模式應用。它內建有電荷泵電路,可對外接的低成本 N 型 MOSFET 開關進行控制實現電源路徑管理。它含有 I2C 介面,通過它可對其輸出電壓/電流參數、工作頻率和纜線壓降補償參數進行設定。它還同時具有完善的保護性設計,其中包括輸入欠壓鎖定保護、過壓和欠壓保護、逐週期電流限制、短路保護和過熱保護等。其封裝形式為 WQFN-40L 5x5。

Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT6190GQW_01 Digikey 6 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
IC
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT6190GQWWQFN5x5-401,500 申請樣品 Digikey 1,427 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG 543 Buy
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