Delta Electronics IPM- C User Manual

Evaluation Procedure

(DEP-003)

The IPM- C Series POL converters

The IPM Series, single output, non-isolated point of load DC/DC converters, are the latest offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. They operate from a 3V~5.5V (IPM04C) or an 8V~14V (IPM12C) source and provide a programmable output voltage of 0.8V to 3.3V(IPM04C) or 0.8V to 5V(IPM12C). With creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as well as offering extremely high reliability under highly stressful operating conditions. All models are protected against abnormal input/output voltage and current conditions.

This document guides the user through the evaluation procedure to qualify a POL module. The data shown in this Evaluation Procedure is for the SIP and SMT Package Type PO evaluation board. Please refer to the appropriate technical data sheet for detailed performance and technical information for the specific POL units.

IPM Series

1.0 Purpose

This document guides the user in performing electronic measurements on an IPM POL (point of load) DC/DC converter using the Delta Evaluation Board.

2.0 Relevant Documentation

The documentation and background information listed below is relevant to this evaluation procedure:

․ Applicative date sheets for IPM Series unit

under evaluation.

․ Power Module Evaluation Board Schematic. ․ Power Module Evaluation Board Layout.

․ General Test and Safety Procedures.

Evaluation Procedure EP_IPMC_04292005

Delta Electronics, Inc.

3.0 Equipment Required

․ DC Power Supply 0 - 20 V @ 0 - 20A (Agilent 6574A 0 -60V/0 - 35A or equivalent).

․Oscilloscope (Tektronix TDS 460A or equivalent) 4 Channel 400 MHz, equipped with a

x1 scope probe, a x10 scope probe, and two BNC cables (length less than 20 inches/500mm)

․Digital multimeters, one with 20A range and ideally all with 4 1/2 digit resolution

(DVM1, DVM2 and DVM3) (Zentech 2041 or equivalent).

․ Electronic load (Chroma 63030 or equivalent), 300W approx rating, or a suitable

resistive load.

․ DC power supply (GW GPC-3060D or equivalent).

4.0 Equipment Set-Up and Description

Please refer to the Power Module Evaluation Board Layout (see page 15) for reference designators cited in this document and Figure 1 is the Set-up Diagram.

Figure 1. Set-up Diagram

4.1 Connect one lead from the “+” lead of the power supply to the “20A” terminal of the first multimeter DMM1. Then connect one lead from the “Common” of the DMM1 to the “Vin” pin of the Evaluation Board. Set function of DMM1 to DCA to measure the input current.

4.2 Connect one wire from the “-” lead of the power supply (Item 3.1) to the “Vin-“ pin of the Evaluation Board. Note: Use stranded leads at least equivalent to 14 AWG for all connections in sections 4.1 and 4.2.

4.3 Connect the plus “+” and minus “-“ connection leads from a second multimeter to the “SVin+” and “SVin-” Pins on the Evaluation Board. This multimeter is designated DMM2 to measure the input voltage.

4.4 Connect the plus “+” and minus “-“ connection leads from the third multimeter to the “SVout+” and “SVout-” Pin on the Evaluation Board. The multimeter is designated DMM3. DMM3 is used to measure the output voltage.

4.5 Connect a BNC cable (length less than 20 inches/500mm) from BNC1 of the Evaluation Board

to Channel 1 of the oscilloscope (item 3.2). This cable is used to measure the input voltage (between SVin+ and SVin-).

4.6 Connect a BNC cable (length less than 20 inches/500mm) from BNC2 of the Evaluation Board to Channel 2 of the oscilloscope. This cable is used to measure the output voltage (between SVout+ and SVout-).

4.7 Connect the positive and negative power leads of the electronic load (ensuring correct polarity), or an appropriate resistive load, to the Evaluation Board output terminal pin (“+Vout” for positive power lead and “-Vout” for the negative power lead).

.8 For IPM04C series: Open J2 on the Evaluation Board. Connect one lead from the “+” lead of the

power supply to the “12Vcc” on the Evaluation Board. Then connect one lead from the “-” of the power supply to the “12VGND” on the Evaluation Board. For IPM12C: short J2 on the Evaluation Board.

.0 Thermal Management of the Converter

It is imperative that sufficient airflow should be provided t portions of testing. Please refer to the applicative data sheet for the proper cooling and derating necessary to achieve accurate results when testing the converter.

o the converter at all times during all

6.0 Tests Performed

The following tests are

6.1

Input Characteristics

 Input Voltage Range.  Under-Voltage Locko  No Load Input Current

6.2 O

utput Characteristics

 Line Regulation.  Load Regulation.  Output Regulation  Output Voltage Se

6.3 D

ynamic Characteristics

Maximum Output Voltage Deviation (due to step change in load).



 Turn on Response time.

6.4

Thermal Characteristic

Efficiency



7.0 T st Set-Up

performed at room temperature (+25 C).

ut.

. t-Point Adjustment Range.

7.1 Initial Set-Up

1) Examine the

being evaluated. Note: IPM12C0A0S04A and IPM04C0A0S06A would denote the SMT package, while IPM12C0A0R04A and IPM04C0A0R06A would denote the SIP package.

This Evaluation Board can be used for both packages.

2) t multimeters DMM2 and DMM3

Set multimeter DMM1 to the DC current 20A range. Se to DC voltage, auto ranging.

Electronic Load Turn on the Electronic Load (or resistive load) and adjust the current level. The maximum rated output curre IPM04C0A0R06A series. Ensure the output load does not exceed the recommended maximum current.

4) ble or disable the converter. Turn SW1 to the OFF position to enable

SW1 is used to ena

e converter, and turn SW1 to the ON position to disable the converter.

5) position if this

SW2 is used for On/Off Transient function test. Turn SW2 to the OFF

nction is not being used. Turn SW2 to the ON position if the Transient function test is

fu required.

part number of the power module to determine that the correct module is

nt is 4A for the model IPM12C0A0R04A series and 6A for the model

6) ed for the trim-down or trim-up setting of the Output Voltage. For IPM, if the

SW3 is us converter requires a trim up, set SW3 to the Trim-up position. If the converter requires a trim down, set SW3 to the Trim-down position. For normal operating, turn off the SW3.

7) l

SW4 and SW5 are used for the Output Voltage Set-Point Adjustment by externa resistors. For IPM12C0A0R04A, if the converter requires a trim-up to 5V, set the SW4_1 to ON position and SW3 to trim-up position. If the converter requires a trim-down to 0.8V, set the SW5_8 to ON position and SW3 to trim-down position.

8) rim-up, set the SW4_2 to

For constant output voltage module, if the converter requires a t ON position and SW3 to trim-up position. If the converter requires a trim-down, set the SW5_8 to ON position and SW3 to trim-down position. Please refer to the Function Tables below for the setting details.

SW4 Function Table

Subdivide switch NO. For adjustable output

module

SW4_1 5.0V setting 5.0V trim up

SW4_2

SW4_3

SW4_4

SW4_5

SW4_6 SW4_7 1.0V setting 1.0V trim up SW4_8 0.95V setting 0.9V trim up

Note: Settings of SW4_1 and SW4_7 are for IPM12C se

SW5 Function Table

Subdivide switch NO. For adjustable output

SW5_1 - 5.0V trim down

SW5_2

SW5_3

SW5_4

SW5_5

SW5_6

SW5_7 SW5_8 0.80V setting 0.9V trim down

3.3V setting

2.5V setting

1.8V setting

1.5V setting

1.2V setting

module

For constant output

module

3.3V trim up

2.5V trim up

1.8V trim up

1.5V trim up

1.2V trim up

ries only

For constant output

module

3.3V trim down

2.5V trim down

1.8V trim down

1.5V trim down

1.2V trim down

1.0V trim down

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