TSD-1943 - Premier Magnetics

TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 O C
SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS
TOP247Y . REFER TO APPLICATION CIRCUITS OF FIGURE 3.
SPEC LIMITS
PARAMETER MIN. TYP. MAX. UNITS
PRIMARY INDUCTANCE (4-1) 300 320 350 µHY
VOLTAGE = 0.250Vrms
FREQUENCY = 100 KHZ
TURN RATIO'S:
SEC (7-9) : PRIMARY (4-1) -------- 1:8.25 -------- + 3%
SEC (10-12) : PRIMARY (4-1) -------- 1:8.25 -------- + 3%
BIAS (5-6) : PRIMARY (4-1) -------- 1:6.6 -------- + 3%
FIGURE 1: SCHEMATIC DIAGRAM
WHITE DOT ON
BOBBIN DENOTES PIN #1
2
1
PRIMARY
4
5
SHIELD
12
10
9
PRI LEAKAGE IND. (SEC SHORTED) -------- -------- 16.0 µHY
VOLTAGE = 0.250Vrms
FREQUENCY = 100 KHZ
HIPOT:
PRIMARY TO SECONDARY 3000 -------- -------- Vrms
BIAS TO SECONDARY 3000 -------- -------- Vrms
BIAS
6
7
FIGURE 3A CIRCUIT PARAMETERS: (1)
AC LINE VOLTAGE 60 Hz 85 -------- 265 Vac
OUTPUT VOLTAGE 25.0 Vdc
OUTPUT CURRENT CONTINUOUS 0.0 -------- 2.5 Amps
OUTPUT CURRENT PEAK -------- -------- 3.0 Amps
LINE REGULATION (85 TO 265Vac) -------- 0.20 -------- +%
LOAD REGULATION 10-100% -------- 0.20 -------- +%
RIPPLE -------- 50.0 -------- +mV
NOTE1:
A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS
B) TRIPLE BASIC INSULATED SECONDARY.
C) DESIGNED TO MEET >6.2mm CREEPAGE REQUIREMENTS.
D) VARNISH FINISHED ASSEMBLY.
FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES)
12 11 10 9 8 7
P
M
TSD-1943
YYWW
PIN #1
WHITE DOT
1 2 3 4 5 6
31.50
(1.240)
MAX
CORE
TAPED
26.50
(1.043)
MAX
29.00
(1.142)
MAX
1 2 3 4 5 6
5.00
(.197)
25.00
(.984)
4.0
(.157)
MIN
20.0
(.787)
0.8 DIA.
(.032)
REV. DESCRIPTION OF CHANGES BY
12/18/03 ORIGINAL RELEASE PP
01/15/04 CORRECT ON SCHEMATICS ON SEC'S PP
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN MM
DIMENSIONAL TOLERANCES ARE:
DECIMALS ANGLES
.X + .25 +0 O 30'
.XX + .15
DO NOT SCALE DRAWING
TRANSFORMER CONTROL DRAWING
PREMIER P/N: TSD-1943 REVISION: 01/15/04
DRAWN BY: PETER PHAM REF:TOP247Y
SCALE: NONE SHEET: 1 OF 4

APPLICATION NOTES
Premier Magnetics' TSD-1943 Switch Mode Transformer was designed for use with Power Integrations, Inc. TOP247Y
off-line PWM switching regulator in the Flyback Buck-Boost circuit configuration. This conversion topology can
provide isolated multiple outputs with efficiencies up to 82%. Premiers' TSD-1943 transformer has been optimized
to provide maximum power.
The PWR-TOPXXX series from Power Integrations, Inc. are self contained 132KHz three terminal voltage controlled
PWM switching regulators. This series contains all necessary functions for an off-line switched mode control DC
power source. These switching regulators provide a very simple solution to off-line designs. The inductors and
transformer used with the PWR-TOPXXX are critical to the performance of the circuit. They define the overall
efficiency, output power and overall physical size.
Below is a universal input high precision 62.5 watt application circuit utilizing Power Integrations TOP247Y switching
regulator in the flyback buck-boost configuration. The component values listed are intended for reference
purposes only. Properly sized heat sinks for the TOP2XX & D3 as well as proper thermal management of the
clamp network are critical requirements for efficient and reliable operation.
FIGURE 3: TYPICAL APPLICATION CIRCUIT
CY1
L3
L2
VTP-01002
R4
R18
R7
L4
L6
+25Vdc
@ 2.5A
LINE
90-132Vac
50/60Hz
NEUT
GND
F1
EMI FILTER
3.1A L1
1
PMCE-0100
10mHY
2
CX1
4 3
L5
~
BR1
600V, 2A
~
+
-
C1
R5
C2
R6
C3 VR1
D5 R1
D L
TOP247Y
S X F
R8
C
1
4
2
C4
12
6
T1
TSD-1943
C5
7 D7 C7 C8 C9
PINS 9& 10 TIE
R9
5
D6
C6
C12
U2
R10
U3
C11
R11
R
12
C
10
R13
1%
R14
1%
RTN
PREMIER MAGNETICS PART NUMBERS:
(REQUEST DATA SHEETS BY PART#)
T1 = TSD-1943 MAIN SWITCHING TRANSFORMER
L1 = PMCE-0100 10mHy EMI/RFI CMC
L2 = VTP-01002 8uHy@4.0A(10uHY@2.0A) INDUCTOR
OTHER PART LIST
TOP247Y
R1 = 2MOhm, .5W; R4, R5, R6 = 2.7M Ohm; R7 = 220Ohm
R8 = 15Oh; R9= 6.8Ohm; R10 = 470Ohm; R11 = 1KOhm
R12 = 4.7KOhm; R13 = 38.3KOhm; R14 = 10KOhm
C1= 100uF, 400V; C2 = 20nF, 1KV; C34.7nF, 1KV; C4 = 100nF; C5 = 47uF, 10V
C6 = 1uF, 50V; C7 = C8 = 680uF, 50V; C9 = 220uF, 35V; C10 = 100nF
C11 = 47nF; C12 = 22uF, 25V
VR1 = P6KE200
D5 = UF4005, D6 = 1N4148, D7 = MBR20100
U2 = LTV817A, U3 = TL431
L3, L4, L5, L6 = BEAD (L3, L4, L6 = 1T, L5 = 3T)
BEADS L3 & L4 ARE PLACE ON D7 ANODE LEADS
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN MM
DIMENSIONAL TOLERANCES ARE:
DECIMALS ANGLES
.X + .25 +0 O 30'
.XX + .15
DO NOT SCALE DRAWING
TRANSFORMER CONTROL DRAWING
PREMIER P/N: TSD-1943 REVISION: 01/15/04
DRAWN BY: PETER PHAM REF:TOP247Y
SCALE: NONE SHEET: 2 OF 4