Power Supply Products
EVS Series for Charging Electrical Energy Storage Systems
・ Charging current and charging voltage can be freely set
・ 300 W model features fanless design
September 10, 2015
TDK Corporation announces the successful development of the EVS series of constant current
power supplies with a simple function set, designed for electrical energy storage and water
processing applications. The new products will be marketed under the TDK-Lambda brand. Inaddition to a 300 W board type fanless model and a 600 W unit type model, a dedicated module
for backflow prevention module will also be offered, resulting in a lineup that covers a wide rangeof customer needs. TDK-Lambda Corporation will start accepting orders for the new products
from September, and shipping will begin in October 2015.
In recent years, the demand for electrical energy storage systems for peak shift and peak cut
applications as well as for emergency use is rapidly increasing. The EVS series has been
designed as a constant current power supply optimal for integration in such systems, providing
the required constant current constant voltage charging capability. The upper output voltage limit
as well as the constant current value can be set by the customer using equipped trimmers.
The series comprises a 300 W and 600 W model with simple functionality. The 300 W model
realizes silent operation through a fanless design. Available output voltage ratings are 18 V*, 36V, and 57 V, to suit the requirements of 12 V*, 24 V, and 48 V storage systems. Parallel
operation is also supported, to enable charging of high-capacity storage systems.
With the development of the new series, in addition to the existing full-function models of theHWS-L/BAT series, TDK-Lambda will now be offering a broad and versatile lineup of power
supplies for charging electrical energy storage systems. A dedicated backflow prevention module
designed for insertion between the power supply and the storage system and featuring much
lower heat generation than a conventional backflow blocking diode will be also be made available,with orders being accepted from October. This backflow prevention module can be used withproducts from the EVS series as well as the HWS-L/BAT series.
*The 18 V output type for 12 V storage systems is available only as the 300 W model.
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GlossaryConstant current constant voltage charging: A charging method where both the charging current
and charging voltage are controlled in order to protect the battery from overcharging.
Main applications
 Charging of various types of storage media, including lithium ion batteries, nickel hydride
batteries, and lead acid batteries
 Applications where constant current control is required, such as electrolysis of water, LED drive
etc.
Main features
 Trimmers on power supply allow presetting of charge current and charge voltage to implement
constant current constant voltage charging
 300 W model features fanless design
 Various output voltage ratings to match storage system voltages are available
For 12 V storage systems: 18 V output type * Only available as 300 W model
For 24 V storage systems: 36 V output typeFor 48 V storage systems: 57 V output type
 Compliant with UL 60950-1 and EN60950-1 safety standards
 Dedicated backflow prevention module for insertion between power supply and storage system
available----TDK Corporation

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Key data: EVS Series
Model
EVS18-16R7 EVS36-8R4 EVS57-5R3 EVS36-16R7 EVS57-10R6 EVS-RP6020
Input voltage
85 to 265 VAC
85 to 265 VAC / 120 to 370VDC
7 to 60 VDC
range/ 120 to 330VDC
Constant voltage
18 VDC
36 VDC
57 VDC
36 VDC
57 VDC
modeRated(12 to 18(24 to 36(48 to 57(24 to 36(48 to 57
voltage
VDC)
VDC)
VDC)
VDC)
VDC)
(Adjustable range)
Constant current
mode
16.7 A
8.4 A
5.3 A
15.3 A
9.7 A
Rated current
20 A Max.
(16.7 A)
(8.4 A)(5.3 A)(16.7 A)
(10.6 A)
100 VAC(200 VAC)
Rated current
8.35 to 16.7 A
8.35 to 15.3 A
Adjustable range
4.2 to 8.4 A 2.65 to 5.3 A
5.3 to 9.7 A(8.35 to 16.7
(8.35 to 16.7
100 VAC(4.2 to 8.4 A) (2.65 to 5.3 A)(5.3 to 10.6 A)
A)
A)(200 V AC)
Maximum output
300 W
600 W
power
Parallel operation
Possible
SafetyUL60950-1, CSA60950-1, EN60950-1
Convection
Cooling
Convection cooling
Forced air by build-in fancoolingSize
50 x 26
84 x 42 x 180
120 x 61 x 190(W x H x D mm)
x 77.5PC boardOutline
PC board type
Unit typetype
Warranty5 years----About TDK Corporation
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935
to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes
electronic components, modules and systems* marketed under the product brands TDK and EPCOS,
power supplies, magnetic application products as well as energy devices, flash memory application
devices, and others. TDK focuses on demanding markets in the areas of information andcommunication technology and consumer, automotive and industrial electronics. The company has anetwork of design and manufacturing locations and sales offices in Asia, Europe, and in North andSouth America. In fiscal 2015, TDK posted total sales of USD 9.0 billion and employed about 88,000
people worldwide.
* The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, highfrequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection
components, and sensors.

About TDK-Lambda Corporation
TDK-Lambda Corporation, a group company of TDK Corporation, is a leading global power supply
company providing highly reliable power supplies for industrial equipment worldwide. TDK-Lambda
Corporation meets the various needs of customers with our entire range of activities, from researchand development through to manufacturing, sales, and service with bases in five key areas, covering
Japan, Europe, America, China, and Asia.
For more details, please pay a visit to http://www.tdk-lambda.com/
TDK Corporation2/ 3

----You can download this text and associated images fromwww.tdk-lambda.com/about/press/20150910_1.html.
Further information on the products can be found under
www.tdk-lambda.com/products/sps/ps_unit/evs/indexe.html.

----Contact for media
Contact
Mr. Akira TESHIMATDK Corporation

TDK Corporation
Tokyo, Japan

Phone

Mail+813 6852-7102

pr@jp.tdk.com

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