Philips Semiconductors

PIP202-12M

DC to DC converter powertrain

Product data

Rev. 01 — 15 July 2002

13 of 20

9397 750 10031

© Koninklijke Philips Electronics N.V. 2002. All rights reserved.

12. Test information

Figure 14 shows the test circuit used to measure power loss in the PIP202-12M. The

output voltage is measured using an averaging circuit. This eliminates losses in the

output inductor and the PCB tracks. The calculated power loss, using this method,

includes the losses in the Equivalent Series Resistance (ESR) of the input filter

capacitors. This must be subtracted from the total loss to give the net loss in the

PIP202-12M.

13. Marking

VI

VDDC

VSSC

VO

VDDO

input voltage

from pulse generator

control circuit

supply (12 V)

output stage supply

VI

VSSO

CB

03ai73

IO

100

nF

V

averaging

circuit

A

load

A

A

V

VO(AV)

IDDO

IDDC

500 nH

VDDO

signal ground

power ground

P

DDO

V

DDO

I

DDO

×

=

P

DDC

V

DDC

I

DDC

×

=

P

O

V

OAV

()

I

O

×

=

P

tot

P

DDO

P

DDC

P

O

–

+

=

TYPE No: PIP202-12M-NN (NN is version number)

DIFFUSION LOT No: 7 characters

MANUFACTURING CODE: see Figure 16

COUNTRY OF ORIGIN: Korea

Fig 15. SOT687-1 marking.

Fig 16. Interpretation of manufacturing code.

terminal 1

index area

03ag38

TYPE No.

DIFFUSION LOT No.

MANUFACTURING CODE

COUNTRY OF ORIGIN

Release status code

X = Development Sample

Y = Customer Qualification Sample

blank = Released for Supply

Date code

YY = last two digits of year

WW = week number

Design centre

k = Hazel Grove, UK

Diffusion centre

h = Hazel Grove, UK

Assembly centre

f = Anam Korea

03ai72

hfkYYWWY