True Blue Power TWC15 Installation Guide

Revision A • February 15, 2022

FOREWORD

This manual provides information intended for use by persons who, in accordance with current
regulatory requirements, are qualified to install this equipment. If further information is required,
please contact:

True Blue Power

c/o Mid-Continent Instrument Co., Inc.

Attn: Customer Service Dept.

9400 E. 34th St. N.

Wichita, KS 67226 USA

Phone [phone]

Fax [phone]

www.truebluepowerusa.com

www.mcico.com

We welcome your comments concerning this manual. Although every effort has been made to
keep it free of errors, some may occur. When reporting a specific problem, please describe it
briefly and include the manual part number, the paragraph/figure/table number and the page
number. Send your comments to:

True Blue Power

c/o Mid-Continent Instrument Co., Inc.

Attn: Technical Publications

9400 E. 34

Wichita, KS 67226 USA

Phone [phone]

Fax [phone]

© Copyright 2022

Mid-Continent Instrument Co., Inc.

th

St. N.

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1 Manual Number 9019726 • Revision A, February 15, 2022

TABLE OF CONTENTS

SECTION 1 GENERAL DESCRIPTION 4

 INTRODUCTION 4
 PHYSICAL ATTRIBUTES 4
 TECHNICAL SPECIFICATIONS 6

SECTION 2 PRE-INSTALLATION CONSIDERATIONS 7

 COOLING 7
 EQUIPMENT LOCATION 7
 ROUTING OF CABLES 7
 LIMITATIONS 7
 MODIFICATIONS 8

SECTION 3 INSTALLATION 9

 GENERAL INFORMATION 9
 UNPACKING AND INSPECTING EQUIPMENT 9
 PARTS 9
 CABLE HARNESS 9
 INSTALLATION 11

SECTION 4 OPERATION 14

 UNIT ARCHITECTURE 14
 PROTECTIVE FEATURES 14
 OPERATIONAL MODES AND ALARM CONDITIONS 15
 CHARGER OPERATION 15

SECTION 5 CONFORMANCE 17

 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 17
 ENVIRONMENTAL QUALIFICATON STATEMENT 17

2 Manual Number 9019726 • Revision A, February 15, 2022

A

REVISION HISTORY

Rev Date Detail Approved

02/15/2022 Initial release. WVC

3 Manual Number 9019726 • Revision A, February 15, 2022

SECTION 1 GENERAL DESCRIPTION

INTRODUCTION

The TWC15 Series, part numbers 6430015-( ) are Qi Compatible High Power Wireless Chargers.
The units are certified accessories that convert 12 to 32 volts of DC electrical input from the aircraft
to a maximum of 15 Watts of wireless charging for personal electronic devices (PEDs), such as
phones, tablets, etc. The TWC15 wireless chargers can be mounted in a variety of locations and
orientations throughout the aircraft. Three different units provide aircraft owners with flexibility to
select the best wireless charger suitable for installation. The 6430015-1 (referred to as -1) is very
thin (0.21”) and can be located where a low profile product is required to fit into locations such as
beverage trays. The 6430015-2 (-2) has the smallest footprint (2.28” x 2.45”) and can fit in those
locations where mounting area is very small. For installations where a larger charging area is
desired, the 6430015-3 (-3) has 3 coils that provide a larger ‘sweet-spot’ for locating your device to
be charged. All three units are certified to FAA TSO-C71 and qualified to multiple RTCA DO-160G
requirements, providing confidence for installation in the cockpit or cabin. The TWC15 Series of
wireless chargers have built-in protections for short circuit, over-load, over temperature, power
surge and foreign object detection (FOD). They are designed to protect against reverse polarity
installation and have temperature monitoring and shutdown capability, allowing the unit to handle
unforeseen conditions safely.

Small, compact and powerful, with plenty of installation flexibility, the TWC15 Wireless Chargers
are an ideal choice as a highly useful and effective addition to any aircraft.

PHYSICAL ATTRIBUTES

The TWC15 wireless charger family provides three different configurations, each an integrated
component contained in a metal enclosure that can be mounted in many different aircraft locations
with a variety of mounting options/alternatives. All units utilize the same external connection that
provides for power input and return, a line for enabling the charger and lastly a dedicated line for
providing operating status of the wireless charger. Each wireless charger features four (4)
threaded holes designed for attachment with 2-56 screws. Refer to Figures 1.1, 1.2 and 1.3 for
specific unit dimensions.

Figure 1.1

6430015-1 Drawing

4 Manual Number 9019726 • Revision A, February 15, 2022

Figure 1.2

6430015-2 Drawing

Figure 1.3

6430015-3 Drawing

5 Manual Number 9019726 • Revision A, February 15, 2022

r

–

A

TECHNICAL SPECIFICATIONS

TWC15 Models and Type

Part Number:
6430015-1
6430015-2
6430015-3

Description:
Thin wireless charger – 1 coil
Compact wireless charger – 1 coil
Triple coil wireless charge

Table 1.1

3 coils

Electrical Attributes
Input Voltage 12-32 VDC
Input Power 26 watts max; 2.2 amps @ 14 VDC / 0.9 amps @ 28 VDC
Output Power 15 watts maximum

Table 1.2

Physical Attributes

Weight:

-1:

-2:

-3:
Dimensions

-1:

-2:

-3:

3.4 oz. (96 g)

3.0 oz. (85 g)

5.9 oz. (167 g)

4.50 inches wide X 2.28 inches deep X 0.21 inches high
(114.3 mm wide x 57.9 mm deep x 5.3 mm high)

2.45 inches wide X 2.28 inches deep X 0.35 inches high
(62.2 mm wide x 57.9 mm deep x 8.9 mm high)

4.50 inches wide X 2.28 inches deep X 0.45 inches high

(114.3 mm wide x 57.9 mm deep x 11.4 mm high)
Charging Port Type Qi Compatible Wireless Charging
Maximum Device Height

3/8” (0.375”) / 9.5 mm

bove Charging Port
Connector Kit MCIA P/N 9019739-1
Mounting Under mount, flush mount

Table 1.3

Qualifications

Certification FAA TSO-C71
Environmental Qualification RTCA DO-160G Environmental Category

See Section 5.2

Table 1.4

Wireless Power Consortium (WPC) Standard

-1/-2:

-3:

Compliant to WPC 1.2.2 Standard
Compliant to WPC 1.2.4 Standard

Table 1.5

6 Manual Number 9019726 • Revision A, February 15, 2022

SECTION 2 PRE-INSTALLATION CONSIDERATIONS

COOLING

No external cooling is required. The unit will become warm when in use. This is normal and within
operational parameters. No special mounting considerations are required; however, mounting to a
metal surface can help dissipate any heat generated and extend the life of the product.

EQUIPMENT LOCATION

The TWC15 wireless chargers are designed for mounting flexibility, allowing for installation in the
cockpit or in the cabin. They are designed for mounting typically directly underneath a panel that
will generally be in a horizontal orientation so that devices to be charged (phones, tablets, etc.) will
not move during steady flights. Clearance should be provided for the mating connector which may
require an additional inch beyond the rear of the unit.

ROUTING OF CABLES

Avoid sharp bends in cabling and routing near aircraft control cables. Avoid close proximity and
contact with aircraft structures, avionics equipment or other obstructions that could chafe wires
during flight and cause undesirable effects.

LIMITATIONS

Environmental qualifications were verified per RTCA DO-160, Revision G in lieu of those identified
within the minimum performance standards (MPS) of the TSO. The TWC15 wireless chargers
meet the DC power input requirements of TSO-C71; however, there is no direct output of DC
power as that function is replaced by wireless charging.

The conditions and tests for TSO approval of this article are minimum performance standards.
Those installing this article, on or in a specific type or class of aircraft, must determine that the
aircraft installation conditions are within the TSO standards, specification of the article and
deviations as listed above. TSO articles must have separate approval for installation in an aircraft.
The article may be installed only according to 14 CFR part 43 or the applicable airworthiness
requirements.

The wireless chargers are exciting new interfaces for charging electronic devices. The TWC15
products have been tested with and supports a wide variety of devices now emerging in the open
market. However, compatibility with all devices may not be guaranteed. True Blue Power continues
to be proactive in evaluating new devices and strives to continually improve the product as needed
to serve the vast majority of Qi Compatible personal electronic devices (PEDs).

7 Manual Number 9019726 • Revision A, February 15, 2022

MODIFICATIONS

This product has a nameplate that identifies the manufacturer, part number, description,
certification(s) and technical specifications of the unit. It also includes the “MOD” or modification
number representing notable changes in the hardware design of the unit.

Modification (MOD) 0 is the initial release of the product and is identified on the nameplate by the
lack of marking on the MOD numbers 1 through 9 (i.e. 1-9 are visible). All subsequent
modifications are identified on the nameplate by the marking/blacking out of that particular MOD
number (i.e. for MOD 1, the number 1 is not visible and 2-9 are visible - see Figure 2.2.1 for
examples). MODs do not have to be sequentially inclusive and may be applied independent of
each other.

For additional details regarding specific changes associated with each MOD status refer to the
product published Service Bulletins at www.truebluepowerusa.com.

MOD 0

MOD 1

MOD 1
& MOD 2

Figure 2.2.1

Nameplate and MOD Status Example

8 Manual Number 9019726 • Revision A, February 15, 2022

SECTION 3 INSTALLATION

GENERAL INFORMATION

This section contains interconnect diagrams, mounting dimensions and other information
pertaining to the installation of the TWC15 family of Qi Compatible Wireless Chargers. After
installation of cabling and before installation of the equipment, ensure that power and ground are
applied to the proper pins specified in Section 3.3.2, Pin Assignment Information.

UNPACKING AND INSPECTING EQUIPMENT

When unpacking this equipment, make a visual inspection for evidence of any damage that may
have occurred during shipment.

PARTS

3.3.1 Included Parts

A. Qi Compatible Wireless Charging Port MCIA P/N 6430015-( )
B. Installation Manual MCIA P/N 9019726
C. Connector Kit MCIA P/N 9019739-1

 Mating Connector, 4-pin
 Pins (6) (4 required, 2 spares)
 Screws, #2-56 x 1/4 flat-head (4)
 Screws, #2-56 x 3/16 pan-head (4)

3.3.2 Installer Supplied Parts

A. Cable Harness Wire See Section 3.4.1 for specifications
B. Circuit Breaker Recommendation 3 amp (2 amp may be sufficient for 28V aircraft)

CABLE HARNESS

Construct the cable harness following the instructions outlined below and per Figure 3.1.
Refer to Section 2: Pre-Installation Considerations, for routing precautions.

3.4.1 Wire Gauge Selection

Use of PTFE, ETFE, TFE, Teflon or Tefzel insulated wire is recommended for aircraft use.
The wire harness should utilize 20-24 AWG stranded wire. Refer to table 3.1 below. This table is
provided to aid in the consideration of voltage drop due to harness length. Any other wiring
standards that are applicable to the installation should also be considered. 

Wire Gauge Wire Length

20 AWG stranded wire 24 ft
22 AWG stranded wire 14 ft
24 AWG stranded wire 9 ft

Table 3.1

Wire Gauge and Length

9 Manual Number 9019726 • Revision A, February 15, 2022

3.4.2 Pin Assignment Information and Location

See Table 3.2 for pinout definition and Figure 3.1 for pin locations.

Pin Number

1 Aircraft Power (12-32 VDC)
2 Ground
3 Status
4 Enable

Signal

Table 3.2
Wireless Charger Pin Assignment

Figure 3.1

Wireless Charger Pin Locations

Note: Pins should be crimped using Molex Hand Crimp Tool 213309-1000. See the Molex Hand
Crimp Tool User Manual for crimp procedures.

3.4.3 Wiring Connections

Enable Pin

The TWC15 enable pin will automatically turn on the wireless charger power supply if it is floating
or not connected to power (12-32 VDC). If the wireless charger is to be enabled whenever power
is provided, the enable pin does not need to be connected. However, if the aircraft installation
includes the capability to enable/disable the wireless charger, the enable pin can be wired
accordingly; if the enable pin is open it will enable input power; if connected to aircraft power (12­32 VDC) it will disable input power. Controlling the enable can be performed through an external
100K Ω series resistor if desired. If controlling the enable is performed from external electronics
operating at 5V, the external series resistor should be 2.2K Ω or less.

Status Indication

The status output is designed to drive an external LED with minimum additional components. A
LED connected between this output and 28V will light with 32 mA of current. For lower LED
current (less brightness) add an external resistor in series with your LED. The status can survive a
continuous short to 28V.

For a more complex flight monitoring systems, the status line is an open-drain output switching to
ground with a 1 Watt 866 Ω resistor. If interfacing to 5 volt electronics, a 10K Ω resistor pull-up to
an external 5V will provide levels between 5V (Status is Off) and 0.4V (Status is on) to interface to
other circuits.

10 Manual Number 9019726 • Revision A, February 15, 2022

3.4.4 Harness Verification

Note:
The TWS15 High Power Wireless Chargers have built-in reverse polarity protection for the power
connector. If Pins 1 and 2 are swapped, the unit will not be damaged, but will also not function.

Once the cable harness is prepared, prior to connecting the TWC15, activate the aircraft power
bus and use a multimeter to verify that aircraft power and ground are supplied with appropriate
voltage on the proper pins within the mating harness.

INSTALLATION

The TWC15 can be installed in many different ways and locations, noting that in order for the TWC15
to charge wireless devices, the panel thickness + device (phone, tablet, etc.) case combined
thickness should not exceed 0.375”. Below are typical mounting methods:

 Undermount panel concepts with brackets attaching to the aircraft panel per Figures 3.2 and 3.3.
 Undermount panel with screws attaching directly to charger per Figure 3.4.
 Flush mount with screws attaching bottom of charger to recessed panel per Figure 3.7.
 Many other options are available for mounting the TWC15 wireless chargers depending on your

aircraft’s available mounting locations and orientations.

Figure 3.2 Undermount Through Hole Bracket Concept

(-1 Configuration Shown)

11 Manual Number 9019726 • Revision A, February 15, 2022

Figure 3.3 Undermount With Threaded Bracket Concept

(-1 Configuration Shown)

Figure 3.4 Undermount Direct to Charger

(-1 Configuration Shown)

Figure 3.5

Undermount Direct Mounting to TWC15 Dimensions

12 Manual Number 9019726 • Revision A, February 15, 2022

Mounting TWC15 units below the panel using a direct mount to the wireless charger requires
countersinking holes (see Figure 3.5 above) for a #2 screw. Additionally, the label on top of the
wireless charger has 4 small gray dots in each corner. A push pin can be used to punch
through the label to allow the 2-56 screws (qty 4) to attach from above per Figure 3.6.

Figure 3.6

Threaded Hole Locations for 2-56 Threaded Holes

Figure 3.7 Flush Mount

(-1 Configuration Shown)

Mounting TWC15 units flush (from above) requires providing a recess height equivalent to the
height of the charger. Cutouts need to be made in the panel to allow for connection of the 4­pin connector; 4 drilled holes are also required to provide attachment from below with 2-56
screws.

13 Manual Number 9019726 • Revision A, February 15, 2022

SECTION 4 OPERATION

UNIT ARCHITECTURE

The TWC15 Series Wireless Chargers convert an aircraft (DC) input voltage (from 12 to 32 volts)
to a wireless charger that can charge personal electronic devices compatible with the Qi wireless
specification.

The unit is designed as a DC-to-DC converter output regulated to meet the Qi standard that
regulates wireless charging up to 15 watts. The TWC15 units provide several protections to
assure continued safe operation of your aircraft.

PROTECTIVE FEATURES

4.2.1 Short Circuit Protection

The TWC15 units are capable of surviving a short circuit event without permanent damage. The
unit goes into an over-current condition so that the average current is significantly reduced and the
device is protected.

4.2.2 Power Surge

The TWC15 units have transient voltage suppressor circuitry included to protect the wireless
chargers.

4.2.3 Reverse Polarity

The TWC15 units have reverse polarity protection; no damage to the unit will occur if the power
and return lines are connected incorrectly.

4.2.4 Over-Load Protection

The TWC15 monitors the power draw individually on each charging coil. If the requested power
from the personal electronic device is too high, the charger will indicate a FAULT on the status line.

4.2.5 Low Input voltage Shutdown

If the input voltage applied to the TWC15 drops below 12 VDC the unit will shut down until the
applied voltage returns to an operational level within range.

4.2.6 Over-Temperature

When the internal temperature of the TWC15 exceeds designed thresholds, the unit will shut down
and stop providing power.

4.2.7 Foreign Object Detect (FOD)

If foreign objects (items like coins, paper clips, etc.) are placed above the wireless coil charging
surface (with or without a personal electronic device present), it will indicate a FAULT on the status
line.

14 Manual Number 9019726 • Revision A, February 15, 2022

OPERATIONAL MODES AND ALARM CONDITIONS

The TWC15 High Power Wireless Chargers provide external status via connector pin #3. Table

4.1 provides indications for all operational modes and alarm conditions.

Operational Mode Status Indication

-1/-2 Units

Standby
Charging
ChargeComplete
ShortCircuit
PowerSurge
LowInputVoltageShutdown
Over‐Temperature
Alarm:Over‐LoadProtection
Alarm:ForeignObjectDetect

1000mson,500msoff 1000mson,500msoff

Off/NoIndication
Off/NoIndication
Off/NoIndication
Off/NoIndication
Off/NoIndication

Table 4.1

Status Indications

On

On
On

Status Indication

-3 Units

On

500mson,500msoff

Off/NoIndication
Off/NoIndication
Off/NoIndication

Off/NoIndication
200mson,200msoff
200mson,200msoff

CHARGER OPERATION

Be sure to adhere to the following precautions when charging your Personal Electronic Device
(PED):

A. Do not use a case with a magnetic or iron plate.
B. Do not use a case with a pop socket.
C. Do not use a device with a thick (> 3/16”) protective case.
D. Do not place any foreign objects between your device and the wireless charger’s

surface, including metal pads, credit cards, keys, coins or metal.

E. The protective phone case (thickness) and the position of your device on the wireless

charger will affect the charging speed. The farther it is placed above and from the
center of the wireless charger, the slower the charging speed will be.

Connecting to the TWC15 wireless chargers is relatively straightforward. Be sure to place your
PED above the wireless charger, making note of the optimal location for that charger. The -3 unit
(triple coil) has a much larger area for PED charging. See Figures 4.1, 4.2 and 4.3.

15 Manual Number 9019726 • Revision A, February 15, 2022

Figure 4.1

Charging Optimal Area (-1)

Figure 4.2

Charging Optimal Area (-2)

Figure 4.3

Charging Optimal Area (-3)

16 Manual Number 9019726 • Revision A, February 15, 2022

gory

)

SECTION 5 CONFORMANCE

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS

No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the
TWC15 series Wireless Chargers. If the unit fails to perform to specifications, the unit must be
removed and serviced by Mid-Continent Instruments and Avionics or their authorized designee.

ENVIRONMENTAL QUALIFICATON STATEMENT

MODEL NUMBER: TWC15 Series PART NUMBER: 6430015-( )

DESCRIPTION: Wireless Charger CERTIFICATION: FAA TSO-C71
MANUFACTURER: True Blue Power, a division of Mid-Continent Instrument Co., Inc.
ADDRESS: 9400 E. 34th St. North, Wichita, KS 67226, USA.
SPECIFICATION: Test Specification (TS) 809 Test Data Sheet (TDS) 809
STANDARD: RTCA DO-160, Rev G, dated 12/08/10

CONDITIONS SECTION DESCRIPTION OF TEST

Temperature and Altitude 4

Temperature Variation 5

Humidity 6

Operational Shock and Crash Safety 7

Vibration 8

Explosion 9

Waterproofness 10

Fluids 11

Sand and Dust 12

Fungus 13

Salt Spray 14

Magnetic Effect 15

Power Input 16

Voltage Spike 17

Audio Frequency Conducted Susceptibility 18

Induced Signal Susceptibility 19

Radio Frequency Susceptibility 20

Category R; Curves C, C1

Category C4

Category S2

Category B

Category B

Category X

Category X

Category X

Category X

Category X

Category X

Category Z

Category B(XX)

Category B

Category R

Category X

Category X

Emission of Radio Frequency Energy 21 Category ML (-1)

Lightning Induced Transient Susceptibility 22

Lightning Direct Effects 23

Icing 24

ESD 25

Fire, Flammability 26

REMARKS:

Section 4: Category C4 with excursions as declared by the manufacturer:

 4.6.1: Altitude adjusted from 35k to 55k feet.

Section 7: Category B with excursions as declared by the manufacturer:

 7.2.1: Operational Shock adjusted from 11ms, 6g to 11ms, 15g
 7.3.1: Crash Safety Impulse adjusted from 11ms, 20g to 11ms, 30g



7.3.3: Crash Safety Sustained adjusted from 20g to 30g

Cate
Category X

Category X

Category X

Category A

Category X

BL (-2, -3

17 Manual Number 9019726 • Revision A, February 15, 2022