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Table of Contents
Summary of Contents for Mid-Continent Instruments TRUE BLUE POWER TC120
- Page 1 Revision H April 13, 2021...
- Page 2 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.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1 GENERAL DESCRIPTION 4 1.1 INTRODUCTION 4 1.2 TECHNICAL SPECIFICATIONS 5 SECTION 2 PRE-INSTALLATION CONSIDERATIONS 6 2.1 COOLING 6 2.2 EQUIPMENT LOCATION 6 2.3 ROUTING OF CABLES 6 2.4 LIMITATIONS 6 2.5 MODIFICATION 7 SECTION 3 INSTALLATION 8 ... - Page 4 REVISION HISTORY Date Detail Approved 02/10/2016 Initial release Updated EQF in Section 5, corrected input voltage range, 03/04/2016 added note to Section 2.4. 03/15/2016 Add -2 version. 05/27/2016 Updated wiring drawings in Section 3. 02/10/2016 Updated Section 4.2.1. Updated style and brand to meet Marketing and 05/07/2020 Engineering guidelines.
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Page 5: Section 1 General Description
SECTION 1 GENERAL DESCRIPTION INTRODUCTION The model TC120 DC/DC Power Converter is a lightweight power converter that translates a direct current (DC) input of 28 volts to an adjustable 5 to 18 volt direct current (DC) output. The input operating voltage (24–32VDC) makes the TC120 suitable for nearly any common general, business, or commercial aviation application and provides an adjustable DC output voltage of 5 to 18VDC. -
Page 6: Technical Specifications
TECHNICAL SPECIFICATIONS Electrical Attributes Input Voltage Rated 28VDC nominal, Operating 24 – 32VDC Input Current (full load) 5 amps max at nominal input voltage Output Voltage 5 – 18VDC adjustable Output Power 120 watts nominal Efficiency 95% nominal Table 1.1 Physical Attributes Weight 11.0 oz (312g) -
Page 7: Section 2 Pre-Installation Considerations
SECTION 2 PRE-INSTALLATION CONSIDERATIONS COOLING The TC120 product does not require external cooling or contain internal active cooling. Cooling of the unit occurs exclusively through passive conduction through the base or radiated cooling across the metal case. Additional cooling can be realized through convection (exposure to free moving air) or conduction (mounting to a thermally conductive metal surface). -
Page 8: Modification
MODIFICATION 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. -
Page 9: Section 3 Installation
SECTION 3 INSTALLATION GENERAL INFORMATION This section contains interconnect diagrams, mounting dimensions and other information pertaining to the installation of the TC120 DC/DC Converter. After installation of cabling and before installation of the equipment, ensure that power is applied only to the pins specified in the interconnect diagram. - Page 10 Pin Assignment Information DC Input – (24-32 VDC). Connect pin A to the aircraft positive 28 VDC bus (7.5 amp circuit breaker recommended) DC Return – Connect pin B to input power return or aircraft ground. Equivalent to pin D DC Output –...
- Page 11 DC INPUT 5-18V OUTPUT ADJUSTMENT TRIMMER DC RETURN DC OUTPUT TC120 DC RETURN 6430120-1 (NOT CONNECTED) Figure 3.2: Typical 6430120-1 Aircraft Wiring Installation – Constant On DC INPUT 5-18 V OUTPUT ADJUSTMENT TRIMMER DC RETURN TC120 DC OUTPUT 6430120-2 DC RETURN ENABLE ON/OFF Figure 3.3: Typical 6430120-2 Aircraft Wiring Installation –...
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Page 12: Mounting
MOUNTING Refer to Section 2: Pre-Installation Considerations in regards to equipment location. The TC120 DC/DC Converter is designed for base mounting only. Four 6-32 mounting holes should be provided in the aircraft in accordance with Figure 3.6. Secure the unit with four 6-32 pan head screws, or equivalent. -
Page 13: Section 4 Operation
SECTION 4 OPERATION ELECTRICAL PERFORMANCE The TC120 DC/DC Converter is designed as a high-efficiency non-isolated, buck topology, solid- state switch-mode power supply. The unit converts a DC voltage input to a user-selected regulated 5 to 18 VDC output. The Pulse-Width-Modulation (PWM) circuits utilize current-mode control technology. -
Page 14: Protective Features
Figure 4.1 TC120 Continuous and Temporary Output Current Limits and Output Voltage PROTECTIVE FEATURES Remote On/Off A version of the TC120 DC/DC Converter (6430120-2) incorporates a remote ON/OFF feature that allows the user to enable or disable the output of the unit remotely. By providing a ground to the appropriate pin, the user can enable the output of the unit via a remote mounted switch. - Page 15 Figure 4.2 TC120 Input Voltage vs Output Voltage Range The Temporary Operating Range represents a voltage range where extensive performance and qualification measurements have not been made other than for DO-160 Section 16 at 18VDC. If you require a TC120 fully qualified for input operation below 22 VDC contact Mid-Continent Sales.
- Page 16 Output Voltage Range In Table 1.2 the adjustable Output Voltage range of the TC120 is 5 to 18VDC. Each individual TC120 is tested to this range. The actual adjustment range of the trimmer is typically 4.3 to 18.4 VDC. If you require an adjustment range other than the specified 5 to 18VDC range contact Mid-Continent Sales.
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Page 17: Section 5 Conformance
No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the TC120 DC/DC Converter. 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 QUALIFICATION STATEMENT...
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