IRAUDPS3 [INFINEON]
Class-D Audio Amplifier;
| 型号： | IRAUDPS3 |
| 厂家： | 
Infineon |
| 描述： | Class-D Audio Amplifier |
| 文件： | 总20页 (文件大小：1480K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Energy Saving Products
101 N.Sepulveda Blvd, EL Segundo 90245 California, USA
IRAUDPS3-30V
+/-30V Power Supply for
Class-D Audio Amplifier
Reference Design
User Guide
Rev. 1.2 6/23/2015
International Rectifier
Page 1 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
Table of Contents
1
2
3
INTRODUCTION........................................................................................................................3
IRS27951/2 DESCRIPTION.......................................................................................................3
EVALUATION BOARD SPECIFICATIONS................................................................................4
3.1 Board Description ...................................................................................................................5
3.2 Schematic...............................................................................................................................6
3.3 Board PCB Layout..................................................................................................................7
3.4 Bill of Materials .......................................................................................................................8
EVALUATION BOARD OPERATING PROCEDURE...............................................................10
4.1 Load Connection ..................................................................................................................11
4.2 AC Input................................................................................................................................11
4.3 IRS27952 DC Supply Voltage ..............................................................................................11
4.4 Disconnect the Board ...........................................................................................................11
SYSTEM PERFORMANCE CHARACTERIZATION ................................................................12
5.1 Primary Waveforms ..............................................................................................................12
5.2 Dynamic Load Response and Regulation Waveforms..........................................................13
Test Conditions: Full Load (2A to +B and -B); No Load (0A).........................................................13
5.3 Output Waveforms with Audio Amplifier Load ......................................................................14
5.4 Output Ripple........................................................................................................................18
5.5 Efficiency ..............................................................................................................................18
5.6 Thermal Data........................................................................................................................19
Transformer Spec.....................................................................................................................20
6.1 Electrical Diagram.................................................................................................................20
6.2 Resonant Transformer Winding Characteristics ...................................................................20
4
5
6
Rev. 1.2 6/23/2015
International Rectifier
Page 2 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
1 INTRODUCTION
This document details the performance and test procedure of IRAUDPS3-30V Reference Design,
featuring the IRS27952S Resonant Half Bridge controller. The document includes schematic diagram,
PCB layout, test setup, test procedure, and test results.
2 IRS27951/2 DESCRIPTION
The IRS2795(1,2) is an 8 pin, high-voltage, double-ended controller specific for the resonant half-bridge
topology. It provides 50% complementary duty cycle; the high-side and the low-side devices are driven 180°
out-of-phase for exactly the same time. The IC incorporates additional protection features for robust operation
and provides a high performance solution while minimizing external components and printed circuit board area.
The IC enables the designer to externally program all the following features using a 2 pin oscillator - operating
frequency range (minimum and maximum frequency), startup frequency, dead time, soft-start time and sleep
mode. Each of these functions are programmed as follows –
The minimum frequency is programmed using RT and CT.
The dead time is programmed using CT.
RSS and CSS program the converter soft-start time.
RSS//RT and CT program the converter start-up frequency.
The converter maximum frequency is set by (Rmax//RT) and CT.
Sleep mode is initiated by pulling the CT/SD to COM.
At start-up, to prevent uncontrolled inrush current, the switching frequency starts from a programmable
maximum value and progressively decays until it reaches the steady-state value determined by the control
loop. This frequency shift is nonlinear to minimize output voltage overshoot and its duration is programmable
as well. Output voltage regulation is obtained by modulating the operating frequency. An externally
programmable dead time is inserted between the turn-OFF of one switch and the turn-ON of the other one
allows device zero-voltage turn-on transitions.
IRS2795 uses IR’s proprietary high-voltage technology to implement a VS sensing circuitry that monitors the
current through the low-side half bridge MOSFET for short circuit faults. By using the RDSON of the low-side
MOSFET, the IRS2795 eliminates the need for an additional current sensing resistor, filter and current-sensing
pin. This protection feature is latched and the thresholds are fixed at 2V for IRS27951 and 3V for IRS27952.
Finally, the controller IC also features a micro power startup current (ICC<100µA) and a user initiated sleep
mode during which the IC power consumption is less than 200µA (@ Vcc=15V). The sleep mode function
allows system designs with reduced standby power consumption and can be used to meet stringent energy
standards from Blue Angel, Energy Star etc.
Rev. 1.2 6/23/2015
International Rectifier
Page 3 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
3 EVALUATION BOARD1 SPECIFICATIONS
AC Voltage Range
88V-132V or 176V-264V
With user selectable 110/220V jumper
The jumper is configured for 110Vac input in default
AC Line Frequency
Output Voltage
47-63Hz
+/-30V, 28V~32V regulation under 120W load.
+15%/-25%, 22.5V~34.5V under maximum pulsed load
Average Load
60W, PS will be designed to thermally support this load
120W, PS will be designed to electrically support this load
5 Minutes Cont. Load
Maximum Pulse Load
200W, 20Hz sinusoid pulse, at Nominal Vin and +20% Vin
150W, 20Hz sinusoid pulse, at -20% Vin (Note2)
This load has to be managed by the output capacitors
Efficiency
>88% at 120W load
60-190 kHz
Converter Switching
Frequency Range
Maximum Ambient
Operating Temperature
50C
Board Size
3”x5”x1.5”
Main board: Single layer PCB
Control board: Double layer PCB
There are high voltages present whenever the board is energized and proper precautions
should be taken to avoid potential shock and personal injury.
1
Please note that EMI measurements have not been performed on this evaluation board. The primary goal of this board is to demonstrate the
performance of the IRS27952 controller IC.
2 The LLC resonant half-bridge has narrow line regulation range. At low line the capability of peak power is folded back.
Rev. 1.2 6/23/2015
International Rectifier
Page 4 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
3.1 Board Description
The evaluation board consists of a front-end AC-DC rectifier stage cascaded with a half-bridge resonant DC-
DC converter with +/-30V output voltage rails.
The front end is a conventional pi type EMI filter, followed by bridge rectifier stage. Two 200V/680uF bulk
capacitors are connected in series to provide stable DC bus voltage. The rectifier can be configured as full
bridge rectifier for 220Vac input, or voltage doubler rectifier for 110Vac input.
The downstream converter is a multi-resonant half bridge LLC converter whose control is implemented with the
IRS27952 controller HVIC (U101 on the control board). The controller drives the two half-bridge MOSFETs
with a 50 percent fixed duty cycle with pre-defined dead-time. Output voltage regulation is achieved by
changing the switching frequency according to the feedback signal.
IRS27952 is self-supplied in this reference design. The startup resistors R7 and R7A~C provide startup current
to IRS27952 during power up and charge the Vcc capacitors (CP3 and C5 on the main board). Once Vcc
voltage exceeds Vccuv+ threshold, IRS27952 starts operation and the auxiliary winding of power transformer
can provide bias to the IC. The voltage of auxiliary winding could vary a lot when load changes from 0A to full
load, so a linear regulator – Z101, R101 and Q101 (on the control board) – is used to keep Vcc regulated at
12V.
The transformer uses the magnetic integration approach, incorporating the resonant series and shunt
inductances in the power transformer. The transformer configuration chosen for the secondary winding is
center-tap. The feedback loop is implemented by means of a classical configuration using a TL431 (U104) to
adjust the current in the optocoupler PC817 (U103). The optocoupler transistor modulates the current from the
RT pin of the controller IC to modulate the switching frequency, thus achieving output voltage regulation.
The secondary side has two center-tapped windings for +30V and -30V output. Each rail has full wave rectifier
and filter with the return connected to center-tap. The feedback loop is configured to regulate the rail to rail
voltage to 60V. The balance of +30V and -30V is achieved by the symmetric windings of transformer.
Rev. 1.2 6/23/2015
International Rectifier
Page 5 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
3.2 Schematic
Figure 1 – Main Board Schematic
Figure 2 – Control Board Schematic
Rev. 1.2 6/23/2015
International Rectifier
Page 6 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
3.3 Board PCB Layout
Figure 3 – Main Board Layout (Single layer PCB)
Figure 4 – Control Board Layout (double layer PCB)
Rev. 1.2 6/23/2015
International Rectifier
Page 7 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
3.4 Bill of Materials
Qty.
3
Value
Description
Designator
C8, D1, D2
CR1, CR2
AC2
Digikey P/N
Vendor
N/C
2
(open) MUR1620CTG
2P AC Receptacle RA
0.022uF/250V
(OPEN)
(open)
ON Semiconductor
Qualtek
1
2P AC Receptacle RA
Q273-ND
1
CAP .022UF 630V METAL POLYPRO
CAP .10UF 50V CERAMIC X7R 0805
C9
495-1329-ND
399-1169-1-ND
EPCOS Inc
Kemet
1
0.1uF/50V
C5
CAP .10UF 305VAC EMI
SUPPRESSION
1
1
2
0.1uF/305VAC
0.1uF/400V
0.1uF/100V
C4
495-2319-ND
495-2444-ND
399-1805-1-ND
EPCOS Inc
EPCOS Inc
Kemet
CAP .10UF 400V METAL POLY
C7
CAP .1UF 100V CER X7R SMT 1206
CAP .47UF 305VAC EMI
SUPPRESSION
C11, C14
1
1
2
0.47uF/305V
100uF/25V
680uF/200V
C3
495-2322-ND
493-1301-ND
565-2733-ND
EPCOS Inc
CAP 100UF 25V ELECT VZ RADIAL
CAP 680UF 200V ELECT SMQ SNAP
CP3
Nichicon
CP1, CP2
United Chemi-Con
CAPACITOR 4700UF 50V ELECT
TSUP
2
4700uF/50V
CP6, CP7
P6931-ND
Panasonic - ECG
Murata Electronics North
America
2
1
2
1uF/100V
2.2nF
CAP CER 1UF 100V X7R 1206
C18, C19
C10
490-3909-1-ND
445-2411-ND
478-1383-1-ND
CAP CER 2200PF 250VAC X1Y1 RAD
CAP CERM .01UF 10% 50V X7R 0805
TDK
0.01uF
C20, C21
AVX Corporation
CONN BLOCK TERM
PCB 5.08MM 6POS
CONN BLOCK TERM PCB 5.08MM
6POS
1
1
CNN2
SW1
281-1438-ND
WM6602-ND
Weidmuller
CONN HEADER 2POS
.100
Molex Connector
Corporation
CONN HEADER 2POS .100 VERT TIN
3 pin header o.100"
pitch
Molex Connector
Corporation
1
2
CONN HEADER 3POS .100 VERT TIN
DIODE FAST 200V 10A D-PAK
HDR1
WM6603-ND
STTH1002CB
CR3, CR4
497-3536-5-ND
STMicroelectronics
ES1D-E3/61TGICT-
ND
Vishay/General
Semiconductor
2
ES1D
DIODE ULTRA FAST 1A 200V SMA
D3, D4
MMXZ5252B-
TPMSCT-ND
1
1
1
24V
DIODE ZENER 200MW 24V SOD323
019-7340-01R
DZ1
T1
Micro Commercial Co
Precision
Transformer
Mini Fuse 4A
FUSE 4A 250V 8.5X8.5 TIME-LAG
Fuse
486-1474-ND
486-1244-ND
513-1396-1-ND
Schurter Inc
FUSEHOLDER FOR SUB-MINI LINK
PCB
1
Pico fuse holder
5.2uH/5.5A
F1
Schurter Inc
INDUCTOR POWER SHIELD 5.2UH
SMD
Cooper Bussmann, Copper
Bussmann
2
1
L4, L6
Lr
Jumper
Jumper
IRS2795 Control
Module
2
IRS2795 Control Module
CN1, CN2
IRS2795
IR-XIAN, IR_XIAN
LED 470NM
1
1
Blue LED
1mH/2.2A
LED 470NM ROUND BLUE 3MM
LED2A
L1
ROUND BLUE 3MM
TT Electronics
LINE FILTER 1.0MH 2.2A N SERIES
PLK1076-ND
Panasonic - ECG
MH1, MH2,
MH3, MH4
4
2
Screw M3
MH-130
IPA50R250CP or
FDPF18N50
MOSFET N-CH 550V 13A TO-220F or
MOSFET N-CH 500V 18A TO-220F
IPA50R250CP -ND
FDPF18N50T-ND
Infineon /
Fairchild
FET1, FET2
Rev. 1.2 6/23/2015
International Rectifier
Page 8 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
1
1
2
2
1
1
GBU4J-BP
0R
RECT BRIDGE GPP 4A 600V GBU0
RES 0 OHM 1/8W 0805 SMD
BR1
GBU4J-BPMS-ND
RHM0.0ARCT-ND
PT2.2KXCT-ND
Micro Commercial Co
Rohm Semiconductor
Panasonic - ECG
Rohm Semiconductor
Yageo
R14
2.2k
RES 2.2K OHM 1W 5% 2512 SMD
RES 4.7K OHM 1/4W 5% 1206 SMD
RES 27 OHM 1/4W 5% 1206 SMD
RES 47K OHM 1/4W 5% 1206 SMD
R12, R13
R5, R6
R11
4.7k
RHM4.7KERCT-ND
311-27ERCT-ND
RHM47KERCT-ND
27
47k
R8
Rohm
R3, R3A,
R4, R4A,
R7, R7A,
R7B, R7C
8
2
100k
220k
RES 100K OHM 1/4W 5% 1206 SMD
RES 220K OHM 1/4W 5% 1206 SMD
RHM100KERCT-ND
311-220KERCT-ND
Rohm Semiconductor
R1, R2
J1, J2
TH1
Yageo
Molex Connector
Corporation
2
1
Shorting Jumper
5 ohms
Shorting Jumper 2P_HDR_.100
TINRUSH CURRNT LMTR 5.0 OHM
RADIAL
WM23944-ND
495-2096-ND
EPCOS Inc
BOM of Main Board
Qty.
Value
Description
Designator
Digikey P/N
Vendor
Murata Electronics North
America
1
1
1
1
2.2uF
100nF
100nF
510pF
CAP CER 2.2UF 50V X7R 1206
C101
C102
C103
C104
490-3367-1-ND
399-1169-1-ND
399-1248-1-ND
490-1444-1-ND
CAP .10UF 50V CERAMIC X7R 0805
CAP .10UF 50V CERAMIC X7R 1206
CAP CER 510PF 50V 5% C0G 0603
Kemet
Kemet
Kemet
CAP TANTALUM 4.7UF 16V 20%
SMD
1
4.7uF/16V
C105
495-2233-1-ND
Kemet
Murata Electronics North
America
1
1
100nF
1nF
CAP CER .1UF 50V 10% X7R 0603
CAP 1000PF 50V CERAMICX7R 0603
C106
C107
490-1519-1-ND
399-1082-1-ND
Kemet
CN101,
CN104
Molex Connector
Corporation
2
HDR 6P
CONN HEADER 6POS .100 R/A TIN
DIODE ULTRA FAST 1A 400V SMA
WM6006-ND
US1G-E3/61TGICT-
ND
SDM100K30LDICT-
ND
Vishay/General
Semiconductor
1
2
US1G
D101
SDM100K30L-7
DIODE SCHOTTKY 30V 1.0A SOD323 D102, D104
DIODE SWITCH 100V 150MW SOD-
Diodes Inc
Diodes Inc
1
1
1N4148WT-7
N/C
523
D103
1N4148WTDICT-ND
D105
3 pin header o.100"
pitch
Molex Connector
Corporation
1
1
CONN HEADER 3POS .100 VERT TIN HDR101
WM6603-ND
Blue
100k
LED 468NM BLUE CLEAR 0805 SMD
LED101
P101
160-1645-1-ND
Lite-On Inc
POT 1.0K OHM 3MM CERM SQ TOP
SMD
1
ST32ETB104CT-ND
Copal Electronics Inc
POT 1.0K OHM 3MM CERM SQ TOP
SMD
1
1
1
2
2
1
1k
P102
ST32ETB102CT-ND
568-4159-1-ND
311-10KGRCT-ND
P10ACT-ND
Copal Electronics Inc
NXP Semiconductors
Yageo
PBSS4350X
TRANS NPN 50V 3A SOT89
Q101
10k
10
RES 10K OHM 1/10W 5% 0603 SMD
RES 10 OHM 1/8W 5% 0805 SMD
RES 22 OHM 1/8W 5% 0805 SMD
R101
R103, R110
R104, R109
Panasonic - ECG
Panasonic - ECG
Panasonic ECG
22
P22ACT-ND
16k
RES 16.0K OHM 1/10W 1% 0603 SMD R105
P16.0KHCT-ND
Rev. 1.2 6/23/2015
International Rectifier
Page 9 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
R106, R108,
RES 6.20K OHM 1/10W 1% 0603 SMD R111
3
6.2k
P6.20KHCT-ND
Panasonic ECG
R107, R115,
R118
3
1
1
1
1
1
1
N/C
2.7k
10k
4.7k
27k
47k
1.2k
RES 2.7K OHM 1/10W 5% 0603 SMD
RES 10K OHM 1/4W 5% 1206 SMD
RES 4.7K OHM 1/10W 5% 0603 SMD
R112
R113
R114
311-2.7KGRCT-ND
RHM10KERCT-ND
311-4.7KGRCT-ND
311-27.0KHRCT-ND
311-47.0KHRCT-ND
311-1.20KHRCT-ND
Yageo
Rohm Semiconductor
Yageo
RES 27.0K OHM 1/10W 1% 0603 SMD R116
RES 47.0K OHM 1/10W 1% 0603 SMD R117
RES 1.20K OHM 1/10W 1% 0603 SMD R119
Yageo
Yageo
Yageo
IC DRIVER HALF BRIDGE OSC
International Rectifier
1
IRS27952
8SOIC
U101
IRS27952SPBF-ND
(Infineon Technologies)
PHOTOCOUPLER LO IF TRAN 4-
SMD
2
1
PC817
TL431
U102, U103
U104
425-1461-1-ND
568-4883-1-ND
Sharp Microelectronics
NXP Semicondoctor
IC PREC SHUNT REG ADJ SOT23-3
DIODE ZENER 200MW 12V SOD323
MM3Z12VT1GOSCT-
ND
1
1
12V
12V
Z101
ON Semiconductor
Diodes Inc
BZT52C12-FDICT-
ND
DIODE ZENER 500MW 12V SOD123
Z102
BOM of the Control Board
4 EVALUATION BOARD OPERATING PROCEDURE
CAUTION: Potentially lethal voltages exist on this demo board when powered up. Improper
or unsafe handling of this board may result in serious injury or death.
+30V
COM
COM
-30V
Figure 5 - Recommended Evaluation Board Test Setup
Rev. 1.2 6/23/2015
International Rectifier
Page 10 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
4.1 Load Connection
Connect electronic loads or class-D audio amplifier board (such as IRAUDAMP5) to connector CNN2. +30V is
marked as +B on the board, and -30V is marked as –B.
4.2 AC Input
The PSU is designed to work under narrow AC input range. On the main board there is a jumper to select AC
line voltage. If the jumper is shorted, the board works at 110Vac +/-20%. If the jumper is open, the board works
at 220Vac +/-20%.
The AC voltage select jumper HDR1 locates between the input bridge rectifier BR1 and Bus capacitor C8. The
default connection is for 110V AC input (HDR1 jumper is shorted).
An isolation transformer on the AC side is highly recommended, so that all the control signals on the board can
easily be probed by using regular scope probes.
The NTC resistor limits the inrush current upon initial application of full AC line voltage. Once power is applied
to demo board, potentially lethal high voltages will be present on board and necessary precautions should be
taken to avoid serious injury.
4.3 IRS27952 DC Supply Voltage
The board is self-supplied by startup circuit and auxiliary winding of transformer. The startup circuit starts to
work once AC or DC input voltage applies to the board.
4.4 Disconnect the Board
It is recommended to discharge the bulk capacitor CP1 and CP2 every time after evaluation is finished:
-
-
Disconnect the high voltage AC source from AC2
Apply an external 12V DC voltage to control board for a while until bus voltage drops to 0V. Connect
12V to Vcc (pin 5 of CN1) and COM to pin 1 of CN1.
1
2
3
4
5
6
COM LO VS HO Vcc COM
Rev. 1.2 6/23/2015
International Rectifier
Page 11 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5 SYSTEM PERFORMANCE CHARACTERIZATION
5.1 Primary Waveforms
Test Conditions: Full Load (2A to +B and -B); No Load (0A)
Ch 1: Low-side device VGS – Ch3 : Voltage at VS pin
Ch 4: Resonant tank current
88Vac Input, Full Load Operation
88Vac Input, No Load Operation
132Vac input, Full Load Operation
132Vac Input, No Load Operation
Rev. 1.2 6/23/2015
International Rectifier
Page 12 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
Ch 2: +30V Output Voltage Ch 4: Resonant tank current
+B
+B
110Vac, 120W load startup
110Vac, no load startup
The switching frequency sweeps from 180khz to regulation frequency in 20ms~30ms, prevents high current
spike during startup. The output voltage has no overshoot during startup.
5.2 Dynamic Load Response and Regulation Waveforms
Test Conditions: Peak Load (8A to +B and -B); No Load (0A)
Ch 1: +B output – Ch 2: -B output
Ch 4: Output current
110Vac, 8A dynamic load to each rail
8A peak current, 20Hz, 50% duty-cycle
Rev. 1.2 6/23/2015
International Rectifier
Page 13 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5.3 Output Waveforms with Audio Amplifier Load
5.3.1. 110Vac input, 1kHz, 10% clipping
Ch1: +B, Ch2: -B, Ch3: output current on the GND return
Output voltage regulated at +29V/-31V. Power supply output power 250W.
Output power 125W/ch at 1khz, 10% clipping.
Rev. 1.2 6/23/2015
International Rectifier
Page 14 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5.3.2 110Vac input, 20Hz, 10% clipping
Ch1: +B, Ch2: -B, Ch3: output current on the GND return
At 20hz, 10% clipping, +B varies from 31.2V to 23.7V, ripple 7.5V; –B varies from -32.2V to -23.2V,
ripple 9V. Power supply output power 200W.
Output power 100W/ch at 20hz, 10% clipping.
Rev. 1.2 6/23/2015
International Rectifier
Page 15 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5.3.3 132Vac input, 20Hz, 10% clipping
Ch1: +B, Ch2: -B, Ch3: output current on the GND return
At 20hz, 10% clipping, +B varies from 32.5V to 25.6V, ripple 6.9V; –B varies from -34.9V to -28.3V,
ripple 6.6V. Power supply output power is 220W.
Output power 110W/ch at 20hz, 10% clipping.
Rev. 1.2 6/23/2015
International Rectifier
Page 16 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5.3.4 88Vac input, 20Hz, 10% clipping
Ch1: +B, Ch2: -B, Ch3: output current on the GND return
At 20hz, 10% clipping, +B varies from 30.4V to 20.11V, ripple 10.3V; –B varies from -31.1 V to -19.5V,
ripple 11.6V. Power supply output power is 150W.
Output power 75W/ch at 20hz, 10% clipping.
Rev. 1.2 6/23/2015
International Rectifier
Page 17 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
5.4 Output Ripple
Both +B and –B output voltage ripple is less than 100mV at 2A load.
5.5 Efficiency
The efficiency was tested with constant load. The result is shown in the table below.
Low line:
Vinac(V)
88
Iout(A)
+B
29.93
Iout(A)
‐B
29.99
Pin (W)
2.5
Pout (W)
Efficiency
0
2
0
2
0
2
0
2
0
2
0
2
0
0
2
2
0
0
2
2
0
0
2
2
0
0
29.11
30.37
29.38
29.94
29.24
30.34
29.55
29.96
29.16
30.3
30.81
29.55
30.53
30.06
30.7
65.7
66.4
134.6
2.51
65.1
65.8
132.4
2.7
58.22
59.1
88.6%
89.0%
89.0%
0
119.82
0
58.48
59.22
119.9
0
89.8%
90.0%
90.6%
0
110
132
29.61
30.4
29.99
30.8
65.1
66
58.32
59.3
89.6%
89.8%
90.8%
29.65
30.37
29.58
132
119.9
Rev. 1.2 6/23/2015
International Rectifier
Page 18 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
High line:
Vinac(V)
Iout(A)
+B
29.935
Iout(A)
‐B
30.07
Pin (W)
2.3
Pout (W)
Efficiency
0
2
0
2
0
2
0
2
0
2
0
2
0
0
90.8%
0
176
220
264
29.42
29.96
29.56
29.96
29.58
30.51
30.06
30.39
30.07
30.39
132
2.5
119.86
0
130
2.7
119.9
0
92.2%
0
130
119.94
92.3%
5.6 Thermal Data
The thermal performance is tested at 110Vac input and 120W load for 5 minutes.
Ambient
Transformer
Bridge
FET1
FET2
IC IRS27952
CR3
CR4
23
67
76
50
51
49
96
93
71
Dummy load R12,R13
Rev. 1.2 6/23/2015
International Rectifier
Page 19 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
6 Transformer Spec
Minimum operating frequency: 60 kHz
Minimum operating frequency: 200 kHz
Primary inductance: 600 µH 10% @1 kHz - 0.25V (Note 1)
Leakage inductance: 160 µH 10% @1 kHz - 0.25V (Note 2)
Note: 1 Measured between Pins 4 and 6
Note: 2 Measured between Pins 4 and 6 with secondary windings shorted
6.1 Electrical Diagram
Schematic
11
10
12
1
2
P3
S1
P3, P4
Secondary
windings
S1,S2
Primary
winding
(P1, P2)
S3, S4
P4
S2
3
Transformer cross section view
8
4
winding's sequencing
P1
P2
S3
S4
12
11
10
1
2
3
7
9
5
NC
9
8
7
4
5
6
6
Bottom
View
IRAUDPS3 transformer
e
6.2 Resonant Transformer Winding Characteristics
Winding
P1&P2
P3
Pins
4 - 6
Turn number
RMS Current
1.5A
58
4
1 -2
0.1A
P4
2 -3
0.1A
4
S1
11 - 10
10 – 12
8 - 7
1.6A
10
10
10
10
S2
1.6A
S3
1.6A
S4
7- 9
1.6A
Rev. 1.2 6/23/2015
International Rectifier
Page 20 of 20
PROPRIETARY INFORMATION - This document and the information contained therein are proprietary and are not to be reproduced, used or disclosed
to others for manufacture or any other purpose except as specifically authorized in writing by INTERNATIONAL RECTIFIER.
相关型号：
©2020 ICPDF网 联系我们和版权申明