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TRANSCRIPT
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BRIEF INFORMATIONDC/DC Converters 48 V / 12 V
➔ Scalable power class of up to 1.8 kW (passive air cooling) and 3.5 kW (liquid cooling) ➔ Bi-directional energy transfer between 48 V and 12 V power systems ➔ Efficiency rate up to 97 % ➔ Supply to special load systems, e. g. for electromechanical power steering
PRODUCT FEATURES
Benefit to the customerThe converters enable new applications such as stop / start and idle cruising, whilst ensuring the supply of fuel-efficient power loads such as electrical power-steering actuators. Additional, cost-effective systems such as recuperation, electric boost and creep can be implemented with the use of the products. The average harvested electrical power for re-cuperation in WLTP is up to 350 W when using a 10 kW electric machine. This is equivalent to a fuel-saving of ~ 0.5 l / 100 km.
Design and functionThe high power voltage DC/DC converters are bi-directional multiphase converters for dual voltage power systems. A DC/DC converter for power supply of the conventional 12 V power system in vehicles with 48 V alternator can, for example, support high-performance electric machines for boosting and creeping. Reduced load currents can be used for supplying high power loads at 48 V levels.
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FUNCTIONAL DIAGRAM
TECHNICAL DETAILS – 3.5 kW, LIQUID COOLED
Technical data
Max. power in boost mode 1.0 kW
Max. power in buck mode 3.5 kW
Voltage on 48V side 24 V – 60 V
Voltage on 12V side 6 V – 17 V
Data connection CAN (FD)
Dimensions 200 x 165 x 67 mm
Weight ~ 1.7 kg
ConnectorsPower 12 V: M6 threaded boltPower GND: M6 threaded boltPower 48 V: M6 threaded boltSignal: 8 pol Hirschmann
Mating connector* 805-031-541 (Hirschmann)
Cooling concept liquid cooled
Water connector SAE J 2044 – 7 mm Ø
Protection class IP 6k9k
Mounting points M6 / M8
Functional Safety ASIL B (SEooC), ISO 26262
* This component is not included. It may be purchased from Hirschmann.
Technical drawing
Pin assignment
(Starter)Alternator
48 VStorage
Battery48 V
LoadsLoads
(S)/G
DC/DC
48 V 12 V
46.5
42
4321
8765
54.8
±0.
7
48.2
±0.
7
134 ±0.9
64.5 ±0.7
155.2 ±0.9
106.5 ±0.9
81.5 ±0.7
56.5 ±0.7 17.2 ±0.5
75 ±0.7146.9 ±0.9
90.9
5 ±0
.7
70.4
5 ±0
.7
46.5
42
4321
8765
54.8
±0.
7
48.2
±0.
7
134 ±0.9
64.5 ±0.7
155.2 ±0.9
106.5 ±0.9
81.5 ±0.7
56.5 ±0.7 17.2 ±0.5
75 ±0.7146.9 ±0.9
90.9
5 ±0
.7
70.4
5 ±0
.7
46.5
42
4321
8765
54.8
±0.
7
48.2
±0.
7134 ±0.9
64.5 ±0.7
155.2 ±0.9
106.5 ±0.9
81.5 ±0.7
56.5 ±0.7 17.2 ±0.5
75 ±0.7146.9 ±0.9
90.9
5 ±0
.7
70.4
5 ±0
.7
46.5
42
4321
8765
54.8
±0.
7
48.2
±0.
7
134 ±0.9
64.5 ±0.7
155.2 ±0.9
106.5 ±0.9
81.5 ±0.7
56.5 ±0.7 17.2 ±0.5
75 ±0.7146.9 ±0.9
90.9
5 ±0
.7
70.4
5 ±0
.7
1 –2 CAN_L3 KL314 –5 –6 –7 CAN_H8 KL30B
48 V
GND
12 V
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TECHNICAL DETAILS – 1.8 kW, AIR COOLED
Technical data
Max. power in boost mode 1.0 kW
Max. power in buck mode 1.8 kW
Voltage on 48V side 36 V – 54 V
Voltage on 12V side 9 V – 16 V
Data connection CAN (FD)
Dimensions 226 x 175 x 70 mm
Weight ~1.7kg
ConnectorsPower 12 V: M8 threaded boltPower GND: M8 threaded boltPower 48 V: M8 threaded boltSignal: 8 pol Connectivity
Mating connector* TE 2-1534229-1
Cooling concept Air Passive
Protection class IP 6K7, IP 6k9k
Working temperature - 40 °C ~ + 105 °C
Derating temperature 1.8 kW @ 60°C (no air speed)
Functional Safety ASIL B (SEooC), ISO 26262
* This component is not included. It may be purchased from TE Connectivity.
Technical drawing
Pin assignment
226
±2
175 ±2160 ±0.5
205
±0.5
1234
5678
69 ±
1
18 ±
0.5
21.5
126.
75
11.5
21.5 21.53.5
4.757.75
11.5
9
11.96 ±0.38.51 ±0.3
9 ±0.36.45 ±0.3
8.5
±0.3
10.0
2 ±0
.3
226
±2
175 ±2160 ±0.5
205
±0.5
1234
5678
69 ±
1
18 ±
0.5
21.5
126.
75
11.5
21.5 21.53.5
4.757.75
11.5
9
11.96 ±0.38.51 ±0.3
9 ±0.36.45 ±0.3
8.5
±0.3
10.0
2 ±0
.3
226
±2
175 ±2160 ±0.5
205
±0.5
1234
5678
69 ±
1
18 ±
0.5
21.5
126.
75
11.5
21.5 21.53.5
4.757.75
11.5
9
11.96 ±0.38.51 ±0.3
9 ±0.36.45 ±0.3
8.5
±0.3
10.0
2 ±0
.3
226
±2
175 ±2160 ±0.5
205
±0.5
1234
5678
69 ±
1
18 ±
0.5
21.5
126.
75
11.5
21.5 21.53.5
4.757.75
11.5
9
11.96 ±0.38.51 ±0.3
9 ±0.36.45 ±0.3
8.5
±0.3
10.0
2 ±0
.3
1 CAN_1_H2 CAN_1_L3 CAN_2_H4 CAN_2_L5 Ground6 KL307 KL158 reserved
48 VGND12 V
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PROGRAM OVERVIEW
Product image Description Part number
DC/DC, 3.5 kW, liquid cooled 8ES 016 241-001
DC/DC, 1.8 kW, air cooled 8ES 016 240-001
DC/DC, 1.8 kW, air cooled, buck mode without CAN-Interface 8ES 016 240-901
© H
ELLA
Gm
bH &
Co.
KGa
A, L
ipps
tadt
J0
1659
/12.
20
Subj
ect t
o te
chni
cal a
nd p
rice
mod
ifica
tions
.