PHILIPS - Subject: Power Supply DELTA - September 2011

Oct 12, 2026

Technical training material from Philips Consumer Care covering power supply models under the DELTA subject dated September 2011. The document inventories specific PSU/PSL part numbers, provides block diagram references, and includes schematics for output and load conditions, EMI solution components, and key circuit sections. Detailed guidance focuses on EMI protection using CX capacitors and varistor/NTC functions, then outlines PFC and flyback circuitry with over-voltage, snubber protection, short-feedback protection, and current/OLP open-loop safeguards.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages33

Reading Time1 h 23 min

AccessFree to download

Overview

Block Diagram

Output & Load condition

Schematics 1/2

EMI CIRCUIT

Key components for EMI solution

PFC CIRCUIT

FLYBACK CIRCUIT 1/2

FLYBACK CIRCUIT 2/2

VCC voltage at start up

# PHILIPS sense and simplicitySubject:Power Supply DELTAdateSeptember 2011 Theo HeijnenConsumer Care # Overview | Supplier:Delta | | | | --- | --- | --- | | Article ld | Description | Remarks | | 272217190337 | MOD PSL 32 DPS-93BP A B | Blockbuster-32PFL66X6H/T/M/K/ | | 272217190338 | MOD PSL 42 DPS-139APA B | Sundance-42PFL74X6/H/T/M/K/ | | 272217190339 | MOD PSL 47 DPS-186FPA B | Infinity-42/47PFL7XX6/Infinity-
42PDL7906H/T/M/K | | 272217190311 | MOD PSU DPS-300AP-59 A B | 58PFL9955H/D &9956H/T | | 820400156651 | MOD PSL DPS-318AP B | 46PFL9706H/T/M/K &
52PFL9606H/T/M/K | # Block Diagram # Output &Load condition # Schematics_1/2 Schematics 2/2 6 8 10 2 回 D- A A 0 2 LED Driver W- W 来 : B 望 W- 4 二u 92 W W c 排 2 移邦串而 l 古 D D W 2- 甲园日三转勃 3 转转 N E 轻 C0 幸 2丝况三 1 8 cy 8 市 x P F n G 90 woe2 ce W M W- n o W- 肇 7 G G 口 8 * 年超 2 1 : : : 轻 r 李年轻馨： 4 嚣监 6 □ H H - 5 C 而 1 1 PREART Gs3 nxnAY exn # EMI CIRCUIT Key components for EMI solution:CX1&CX2 FL1&FL2 Varistor Z1 is used to to protect against high-voltage transients and surges. NTC1 is a negative temperature coefficient resistor in series with the line to limit the inrushcurrent when PSU first turn on. # PFC CIRCUIT # FLYBACK CIRCUIT 1/2 T901△ # FLYBACK CIRCUIT B++ Over voltage snubber circuit protection W2CD protection for short feedback &protection R972 √W C987 winding /over current for olp/open loop 人 R978 R945 occur W limit current 6060 和1 8 1 vCC-ON zC GND D910 Q916 7 2 FB vcC D913 FB902 2908 3 6 NC CS 5 4. GATE HV 4_△ D903 R906 Q901 2 √MW P943 W C907 9065 4 AL R919 1/2 PC901D 3 R926 兴A 9060Z Q902 W WV R924 OZ68 W 916 R927 中+ C922 W ZD905 W R921 Z16 3 C918 48 C940 R603 W 806QZ 2 Vcc supply circuit ZCD 1 CONFIDEIN1IAL Consumer Care,Kererence PHILIPS FLYBACK CIRCUIT 2/2 # VCC voltage at start up

FAQs

Which models and part numbers are listed for the DELTA power supplies?

The overview table lists multiple MOD PSL and MOD PSU entries with their article IDs and description remarks, including several DPS-93BP/139APA/186FPA and DPS-300AP-59 variants.

What components are highlighted for the EMI solution?

The EMI section names CX1&CX2 and FL1&FL2 as key EMI components, and explains that varistor Z1 protects against high-voltage transients and surges.

How does the document describe protection and current limiting in the flyback circuit?

The flyback sections reference over-voltage protection via a snubber circuit, protection for short feedback, winding/over-current handling, and limit-current mechanisms tied to feedback and control elements such as FB/CS and gate control.

Oct 12, 2026

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