Cosel CHS60, CHS80, CHS200, CHS300, CHS400 Instruction Manual

...

Basic Characteristics Data

Switching

Model Circuit method

CHS60 Foward converter 440

CHS80 Half-bridge converter 250

CHS120 Half-bridge converter 200

CHS200 Full-bridge converter 150

CHS300 Full-bridge converter 170

CHS400 Full-bridge converter 150

CHS500 Full-bridge converter 150

*1 Refer to Specification.

Ref

er to Instruction Manual.

frequency

[kHz]

Input

current

Rated

input fuse

- -

Inrush

current

protection

PCB/Pattern

Material

glass fabric base, epoxy resin

Single

sided

Double

sided

Multilayer

Series/Redundancy

operation availability

Series

operation

Redundancy

Ye s

operation

CHS-20

DC-DC Converters Bus Converter

Power Module Type

Instruction Manual

1 Pin Connection

2 Connection for Standard Use

3 Wiring Input/Output Pin

3.1 Wiring input pin

3.2 Wiring output pin

4 Function

4.1 Overcurrent protection

4.2 Overvoltage protection

4.3 Thermal protection

4.4 Remote ON/OFF

4.5 Remote sensing

4.6 Adjustable voltage range

4.7 Isolation

4.8 PMBus interface

CHS-22

CHS-23

CHS-24

CHS-25

CHS-26

5 Series and Parallel Operation

5.1 Series operation

5.2 Parallel operation

5.3 Redundancy operation

6 Implementation-Mounting Method

6.1 Mounting method

6.2 Automatic Mounting (CHS series:option S)

6.3 Soldering

6.4 Stress onto the pins

6.5 Cleaning

6.6 Storage method (CHS series:option S)

6.7 Stress to the product

7 Safety Considerations

Derating

CHS-26

CHS-27

CHS-28

CHS-29

8.1 CHS Derating

9 SMD type(optionS) package information

CHS-29

CHS-34

CHS-21

+VIN

DC-DC Converters Bus Converter

1 Pin Connection

CHS60

-VIN

+VIN

CHS80

-VIN

+VIN

CHS120

-VIN13

CHS200

-VIN

+VIN

CHS300

-VIN

+VIN

8 -VOUT 7 -S 6 TRM 5 +S 4 +VOUT

-VOUT

-S

TRM

+VOUT

8 -VOUT 7 -S 6 TRM 5 +S 4 +VOUT

Power Module Type

No. Pin Connection Function

No. Pin Connection Reference

In order to use the power supply, it is necessary to wire as shown

in Fig.2.1.

Reference : 3 ”Wiring Input/Output Pin”

8 ”Derating”

Short the following pins to turn on the power supply.

-VIN

Reference : 4.4 ”Remote ON/OFF”

4.5 ”Remote sensing”

The CHS series handle only the DC input.

Avoid applying AC input directly.

It will damage the power supply.

+VOUT +DC output

-VOUT -DC output

+VOUT 3.2 ”Wiring output pin ”

-VOUT 3.2 ”Wiring output pin ”

Connection for Standard Use

RC, +VOUT +S, -VOUT -S

Instruction Manual

Table 1.1 Pin Connection and function

+VIN +DC input

RC Remote ON/OFF

-VIN -DC input

+S +Remote sensing

TRM Adjustment of output voltage

-S -Remote sensing

+VIN 3.1 ”Wiring input pin ”

RC 4.4 ”Remote ON/OFF ”

-VIN 3.1 ”Wiring input pin ”

+S 4.5 ”Remote sensing ”

TRM 4.6 ”Adjustable voltage range ”

-S 4.5 ”Remote sensing ”

CHS400/CHS500

-VIN

+VIN

Fig.1.1 Pin Connection (bottom view)

CHS-22

8 -VOUT 7 -S 6 TRM 5 +S 4 +VOUT

input

Fuse

Cin

Fig.2.1 Connection for standard use

+VIN

-VIN

Cin : External capacitor on the input side

+VOUT

Load

-S

-VOUT

+VIN

-VIN

DC-DC Converters Bus Converter

Power Module Type

Instruction Manual

Table 2.1 Recommended External capacitor on the input side

Model CHS30024

Cin 660

F or more

Model CHS6048 CHS8048 CHS12048 CHS20048

66 F or more 33 F or more 47 F or more 100 F or more

Cin

Model CHS30048/CHS40048/CHS50048

Cin 200

Wiring Input/Output Pin

F or more

3.1 Wiring input pin

(1) External fuse

Fuse is not built-in on input side. In order to protect the unit, install

the normal-blow type fuse on input side.

When the input voltage from a front end unit is supplied to multiple

units, install the normal-blow type fuse in each unit.

Table 3.1 Recommended fuse (Normal-blow type)

Model CHS30024

Rated current 20A

Model CHS6048 CHS8048 CHS12048

Rated current 5A 7A 10A

Model

CHS20048/CHS30048

Rated current 15A 20A 30A

(2) External capacitor on the input side

Install an external capacitor Cin, between +VIN and -VIN input

pins for low line-noise and for stable operation of the power sup-

ply.

Capacitance Refer to Table 2.1

Ta = -20 to +85C Electrolytic or Ceramic capacitor

Ta = -40 to +85C Ceramic capacitor

Cin is within 50mm for pins. Make sure that ripple current of Cin

is less than its rating.

(3) Recommendation for noise-lter

Install an external input lter as shown in Fig.3.1 in order to re-

duce conducted noise. Cin is shown in Table 2.1.

1mH

input

2. 2

Cin

Fig.3.1 Recommended external input lter

(4) Reverse input voltage protection

Avoid the reverse polarity input voltage. It will damage the power

supply.

CHS40048 CHS50048

+VIN

-VIN

0.068 F0.068 F0.033 F0.033 F

+VOUT

-VOUT

10 F

-S

Load

It is possible to protect the unit from the reverse input voltage by

installing an external diode as shown in Fig.3.2.

DC IN

Fig.3.2 Reverse input voltage protection

3.2 Wiring output pin

When the CHS series supplies the pulse current for the pulse

load, please install a capacitor Co between +VOUT and -VOUT

pins.

Recommended capacitance of Co is shown in Table 3.2, 3.3.

If output current decreases rapidly, output voltage rises transiently

and the overvoltage protection circuit may operate.

In this case, please install a capacitor Co.

Select a high frequency type capacitor. Output ripple and startup

waveform may be inuenced by ESR-ESL of the capacitor and the

wiring impedance.

Make sure that ripple current of Co is than its rating.

Table 3.2 Recommended capacitance Co (CHS60, CHS80, CHS120)

No.

Output voltage

1 3.3V 0 - 20,000

2 5V 0 - 10,000

3 12V 0 - 2,200

CHS60 CHS80 CHS120

F 0 - 20,000 F 0 - 20,000 F

F 0 - 10,000 F 0 - 10,000 F

F 0 - 1,000 F 0 - 2,200 F

Table 3.3 Recommended capacitance Co (CHS200, CHS300, CHS400, CHS500)

No.

Output voltage

1 3.3V 0 - 40,000 F

2 5V 0 - 20,000 F 0 - 20,000 F

3 10V

4 12V 0 - 2,200

5 15V

Ripple and Ripple Noise are measured, as shown in the Fig.3.3.

CHS200 CHS300

- -

0 - 2,200 F 0 - 4,000 F

F 0 - 2,200 F 0 - 4,000 F

0 - 2,200 F

CHS400/CHS500

Cin is shown in Table 2.1.

Input

Cin

Oscilloscope BW:100MHz

+VIN

-VIN

+VOUT

-S

-VOUT

50mm

22 F

1.5m 50W

Coaxial cable

R=50 C=0.01

Measuring board

Load

Fig.3.3 Measuring method of Ripple and Ripple Noise

CHS-23

(2.0[Vcc[7.0V)

IC Relay

TransistorPhoto coupler

-VIN

Vcc

DC-DC Converters Bus Converter

4 Function

4.1 Overcurrent protection

Over Current Protection (OCP) is built-in and works at 105% of

the rated current or higher. However, use in an overcurrent situa-

tion must be avoided whenever possible.

The output voltage of the power module will recover automatically

when the fault causing overcurrent is corrected.

When the output voltage drops after OCP works, the power mod-

ule enters a ”hiccup mode” where it repeatedly turns on and off at

a certain frequency.

4.2 Overvoltage protection

The overvoltage protection circuit is built-in. The DC input will be

shut down if overvoltage protection is in operation.

The output voltage of the power module will recover automatically

when the fault causing over voltage is corrected.

Power Module Type

Table 4.1.2 Specication of Remote ON/OFF(CHS60,CHS120,CHS300,CHS400,CHS500)

ON/OFF

Standard Negative

Optional -R

When RC is ”Low” level, fan out current is 0.1mA typ. When Vcc is applied,

use 4.0[Vcc[7.0V.

When remote ON/OFF function is not used, please short between RC and

-VIN (-R: open between RC and -VIN).

Positive

Instruction Manual

logic

Between RC and -VIN

L level(0 - 0.8V) or short ON H level(4.0 - 7.0V) or open OFF L level(0 - 0.8V) or short OFF H level(4.0 - 7.0V) or open ON

Output

voltage

Remarks :

Please note that devices inside the power supply might fail when

voltage more than rated output voltage is applied to output pin of

the power supply. This could happen when the customer tests the

overvoltage performance of the unit.

4.3 Thermal protection

When the power supply temperature is kept above 120C, the

thermal protection will be activated and simultaneously shut down

the output.

The output voltage of the power supply will recover automatically

when the unit is cool down.

-U

Option ”-U” means output is shut down when the abovementioned

protection circuit is activated.

If this happens, protection circuit can be inactivated by cycling

the DC input power off for at least 1 second or toggling Remote

ON/OFF signal.

4.4 Remote ON/OFF

Remote ON/OFF circuit is built-in on the input side (RC).

The ground pin of input side remote ON/OFF circuit is ”-VIN” pin.

Fig.4.1 RC connection example

4.5 Remote sensing

(1) When the remote sensing function is not in use

+VOUT

-S

-VOUT

Fig.4.2 Connection when the remote sensing is not in use

When the remote sensing function is not in use, it is necessary to conrm

that pins are shorted between +S & +VOUT and between -S & -VOUT.

Wire between +S & +VOUT and between -S & -VOUT as short as pos-

sible.

Loop wiring should be avoided.

This power supply might become unstable by the noise coming from poor

wiring.

(2)When the remote sensing function is in use

Short at pin root

Wire as close as possible

Load

Table 4.1.1 Specication of Remote ON/OFF(CHS80,CHS200)

ON/OFF

logic

Standard Negative

Optional -R

When RC is ”Low” level, fan out current is 0.1mA typ. When Vcc is applied,

use 2.0[Vcc[7.0V.

CHS-24

Positive

Between RC and -VIN

L level(0 - 0.8V) or short ON H level(2.0 - 7.0V) or open OFF L level(0 - 0.8V) or short OFF H level(2.0 - 7.0V) or open ON

Output

voltage

+VOUT

-S

-VOUT

Fig.4.3 Connection when the remote sensing is in use

Twisted-pair wire or shield wire should be used for sensing wire.

Thick wire should be used for wiring between the power supply

and a load.

Line drop should be less than 0.3V.

Load

+ 11 hidden pages

Cosel CHS60, CHS80, CHS200, CHS300, CHS400 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Basic Characteristics Data

Instruction Manual