DC/DC Converter Control Unit, Basic Function - GF54.10-P-9891A

Model all (CAR) 

with code B01 (48V technology) 

Overview 

This document contains information on:

• General 
• Location 
• Function requirements 
• Function 

48 V powerpack 

Courtesy of MERCEDES-BENZ USA

General 

The DC/DC converter control unit (13) regulates energy exchange between the 12 V on-board electrical system and the 48 V on-board electrical system.

It is connected to the vehicle's network architecture.

Location 

Depending on the vehicle model and equipment, the DC/DC converter control unit (13), together with the 48 V battery (12), is located as a power pack either in the engine compartment or in the vehicle interior.

Function requirements 

• Circuit 30t ON
• Circuit 30c ON

Function 

The DC/DC converter control unit (13) consists of an output unit and a logic section. The output unit connects the 12 V on-board electrical system to the 48 V on-board electrical system, and it enables energy to be transferred in both directions. The logic section is responsible for communication with other control units and for actuation of the output unit.

The DC/DC converter control unit (13) is networked with the 48 V battery (12).

The DC/DC converter control unit (13) also processes the following information:

• Circuit status
• Engine running status
• Starter-alternator status
• Starter-alternator voltage actual value
• Starter-alternator current actual value
• Charging voltage specified value
• On-board electrical system battery voltage actual value
• Battery current switch status
• Vehicle speed
• Status of driver door (open or closed)

The DC/DC converter control unit (13) processes these input factors and also sends the following information:

• Operating rate of DC/DC converter (13)
• Current of DC/DC converter (13)
• Temperature of DC/DC converter (13)
• State of charge of 48 V battery (12)
• Temperature of 48 V battery (12)
• Current of 48 V battery (12)
• Voltage at 48 V battery (12)
• Detection of a thermal event

Component description for DC/DC converter control unit

Model 223 with code B01 (48V technology)

GF54.10-P-3006A