Caen A7502 User Manual

CAEN

Tools for Discovery

n

Electronic Instrumentation

User Manual UM5555

A7502

2100V/100µA High Efficiency HV Power Supply (5V in)

Rev. 3 - 29 May 2017

Purpose of this Manual

This document is the A7502 User's Manual; it contains information about the installation, the configuration and the
use of the device.

Change Document Record

Date

Revision

Changes

19 October 2016

0

Initial release

27 October 2016

1

New characteristics graphics

7 April 2017

2

New Offset current Vs, Vout and Temperature graphic

29 May 2017

3

Updated § 3

Symbols, abbreviated terms and notation

N.A.

Reference Documents

N.A.

CAEN S.p.A.
Via Vetraia, 11 55049 Viareggio (LU) - ITALY
Tel. [phone] Fax [phone]
[e-mail]
www.caen.it

© CAEN SpA – 2014

Disclaimer

No part of this manual may be reproduced in any form or by any means, electronic, mechanical, recording, or otherwise,
without the prior written permission of CAEN SpA.

The information contained herein has been carefully checked and is believed to be accurate; however, no responsibility
is assumed for inaccuracies. CAEN SpA reserves the right to modify its products specifications without giving any notice;
for up to date information please visit www.caen.it.

MADE IN ITALY : We stress the fact that all the boards are made in Italy because in this globalized world, where getting
the lowest possible price for products sometimes translates into poor pay and working conditions for the people who
make them, at least you know that who made your board was reasonably paid and worked in a safe environment. (this
obviously applies only to the boards marked "MADE IN ITALY", we cannot attest to the manufacturing process of "third
party" boards).

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Electronic Instrumentation

UM5555 – A7502 User Manual Rev. 3

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Index

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....................................................................................................................... 10

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List of Figures

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List of Tables

..............................................................................................................................................4

...................................................................................................................................................5

.......................................................................................................................9

....................................................................................................................9

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Electronic Instrumentation

UM5555 – A7502 User Manual Rev. 3

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1 Overview

The CAEN Mod. A7502 is a compact high efficiency power supply providing a programmable and monitorable output
voltage ranging from 0 to 2100 V, when supplied with a +5 V input.

It is available with either positive or negative output voltage.

The board is provided with an over-current protection: if a current larger than the Iout maximum value is drawn, the
module is not being damaged.

The output voltage is regulated by providing a 0 to +2.5 V external voltage (Vset).

The module is engineered on a FR4 PCB, coated and housed in DC01 steel box. CAD Altium library components and 3D
step models are available on request.

Fig. 1: Mod. A7502

Ordering Option

Board Models

Description

Product Code

A7502N

A7502N -2.1kV 100uA HV Power Supply Module (5V in)

WA7502NXAAAA

A7502P

A7502P +2.1kV 100uA HV Power Supply Module (5V in)

WA7502PXAAAA

Tab. 1: Table of models and related items

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Electronic Instrumentation

UM5555 - A7502 User Manual Rev. 3

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2 Technical Specifications

Packaging

Material: DC01; dimension: W=29 mm ; L=54 mm ; H=16 mm

Contact pins

Male strip header; 2.54mm step; phosphor bronze; UL94V0 insulator
(see Fig. 2)

Operating temperature

-40° C ÷ +70° C

Storage temperature

-55° C ÷ +85° C

Voltage Supply (Vin)

+5 V ± 5%

Output Voltage (Vout)

0 ÷ ±2100 V

Output polarity

Available positive or negative

Enable

If Enable > 3.5 V Channel active
If Enable < 1 V Channel disabled

Vmon Output (positive analog monitor)

0 ÷ +2.5 V

Vset Input (positive analog command)

0 ÷ +2.5 V

Important!: Vset must not exceed 2.5 V (Vout is not limited)

Iset Input (positive analog command)

0 ÷ +2.5 V

Imon Output (positive analog monitor)1

0 ÷ +2.5 V

Status OVC bit

0÷5 V (High = OVC)

Vout/Vout (for ±5% Vin variations)

<1.5 X 10-3 @ full scale

Maximum Output Current (Iout)

100 µA @ ±2100 V

Power requirement

<500 mW;
@ 2100 V / 110 µA (Rload ≈ 20 MΩ)

Efficiency

 50% @ Vout = 2100 V (-45° C ÷ +70° C)

Output Ripple (Full Load)

Typical 5mVpp; Maximum 10mVpp

Vout / Temperature coefficient

< 50 ppm / °C

Vset vs. Vout Integral Non Linearity

<±0.3% (-60° C ÷ +60° C)

Vmon vs. Vout Integral Non Linearity

<±0.3% (-60° C ÷ +60° C)

Electromagnetic compatibility

Weak emission of electromagnetic impulse and RF; one-piece metal shielding with
several ground connections

Uniformity of a lot

< 0.6 %

Protection

Over current short circuit, sparks and humidity

Tab. 2: A7502 Technical Specifications

1

N.B.: In parallel to the load we have a 300 MΩ resistor for the voltage feedback; therefore, the Imon current with load ∞ is Vout/300MΩ.

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Fig. 2: Male strip header of A7502

Fig. 3: Efficiency vs Vout and Temperature

0%

10%

20%

30%

40%

50%

60%

0 500 1000 1500 2000 2500

Efficency (%)

Vout (V)

Efficiency (%) vs Vout and Temperature (RLoad = 20 MΩ)

-60 C°

-30 C°

0 C°

30 C°

60 C°

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Fig. 4: Power consumptions @ 2100 V vs Temperature

Fig. 5: Temperature coefficient vs Vout

Fig. 6: Uniformity of a Lot (ΔVout/Vout)

-

0,10

0,20

0,30

0,40

0,50

0,60

-40 -20 0 20 40

Watt

Temperature (C°)

Power Consumptions vs Temperature and

RLoad

(Vout= 2100 V)

20 MΩ

500 MΩ

1800 MΩ

7

7,5

8

8,5

9

9,5

10

10,5

11

11,5

12

0 500 1000 1500 2000 2500

ppm/C

°

Vout (V)

Temperature coefficent

(-60 to 60 C° RLoad = 20 MΩ)

0,00%

0,10%

0,20%

0,30%

0,40%

0,50%

0,60%

0 500 1000 1500 2000 2500

Uniformity %

Vout (V)

Uniformity

(-60 to 60 C° RLoad = 20 MΩ)

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Electronic Instrumentation

UM5555 – A7502 User Manual Rev. 3

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Fig. 7: Integral non-linearity (ΔVout/Vout)

Fig. 8: Offset current Vs, Vout and Temperature

-0,20%

-0,15%

-0,10%

-0,05%

0,00%

0,05%

0,10%

0,15%

0,20%

-80 -60 -40 -20 0 20 40 60 80

Temperature (C°)

Integral Non Linearity (Vout vs Vset )

INL (Max)

INL (Min)

0,05

0,55

1,05

1,55

2,05

2,55

3,05

3,55

4,05

0 500 1000 1500 2000 2500

µA

Vout (V)

Offset Current vs Vout and Temperature

-30 C°
0 C°
30 C°

60 C°

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Electronic Instrumentation

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Vset / Vout and Vmon / Vout Coefficent (-45 C° to +65 C°)

Model

A7502P

A7502N

Vout/ Vset

824

824

Accuracy: ± 1% 400< Vout < 1000V
± 0.5% Vout > 1000 V

Vout / Vmon

824

824

Accuracy: ± 0.8% 250< Vout < 1000V
± 0.6% Vout > 1000 V

Tab. 3: Table of Vset / Vout and Vmon / Vout coefficent

Example A7502P: if Vset = 2 V, then HV Output = 1648 V ± 8 V

Example A7502P: if Vmon = 1.5 V, then HV Output = 1236 V ± 5 V

Iset / Iout and Imon / Iout Coefficent (-45 C° to +65 C°)

Model

A7502P

A7502N

Iset / Imax out

45

(*)

46.5

(*)

Accuracy: ± 10% Vout > 800 V
Stability: ± 6% Vout > 800 V

Imon / Iout

45

(*)

46.5

(*)

Accuracy: ± 10% Vout > 800 V
Stability: ± 6% Vout > 800 V

Tab. 4: Table of Iset / Imax out and Imon / Iout coefficent

(*) Iset and Imon expressed in V, Imax out and Iout expressed in µA. N.B.: In parallel to the load we have a 300 MΩ resistor for the voltage
feedback; therefore the Imon current with load ∞ is Vout/300MΩ

Example A7502P: if Iset = 2 V, then Imax out = 90 µA ± 22 µA

Example A7502P: if Imon = 1 V, then Iout = 45 µA ± 18 µA

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Electronic Instrumentation

UM5555 – A7502 User Manual Rev. 3

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3 Packaging

Fig. 9: A7502 External packaging

External Connection

The following diagram describes the Pin assignment:

Pin #

Description

Direction

P1

Enable (on >+3.5V)

In

P2

OVC Status

Out

P3

Vmon

Out

P4

Vset

In

P5

Iset

In

P6

Imon2

Out

P7

+5V (±5%) Input

In

P8

RTN ground - shield

P9

HV Output

Out

Fig. 10: A7502 pins position (bottom view)

2

It is necessary to add a regulation current proportional to the operation voltage; the regulation current I equal to Vout/300 MOhm

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Tools for Discovery

n

Electronic Instrumentation

UM5555 - A7502 User Manual Rev. 3

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CAEN SpA is acknowledged as the only company in the world providing a complete range of High/Low Voltage Power Supply
systems and Front-End/Data Acquisition modules which meet IEEE Standards for Nuclear and Particle Physics. Extensive
Research and Development capabilities have allowed CAEN SpA to play an important, long term role in this field. Our
activities have always been at the forefront of technology, thanks to years of intensive collaborations with the most
important Research Centres of the world. Our products appeal to a wide range of customers including engineers, scientists
and technical professionals who all trust them to help achieve their goals faster and more effectively.

CAEN S.p.A.

CAEN GmbH

CAEN Technologies, Inc.

Via Vetraia, 11

Klingenstraße 108

1140 Bay Street - Suite 2 C

55049 Viareggio

D-42651 Solingen

Staten Island, NY 10305

Italy

Germany

USA

Tel. [phone]

Phone [phone]

Tel. [phone]

Fax [phone]

Fax [phone]

Fax [phone]

[e-mail]

Mobile [phone]

[e-mail]

www.caen.it

[e-mail]

www.caentechnologies.com

www.caen-de.com

CAEN

Tools for Discovery

Electronic Instrumentation

User Manual - A7502 rev. 3 - 29 May 2017

00106/16:A7502.MUTx

Copyright © CAEN SpA. All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change without notice.