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PDF ADM1041A Data sheet ( Hoja de datos )
| Número de pieza | ADM1041A | |
| Descripción | Secondary-Side Controller | |
| Fabricantes | Analog Devices | |
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FEATURES
Digital calibration via internal EEPROM
Supports SSI specification
Comprehensive fault detection
Reduced component count on secondary side
Standalone or microcontroller control
SECONDARY-SIDE FEATURES
Generates error signal for primary-side PWM
Output voltage adjustment and margining
Current sharing
Current-limit adjustment
OrFET control
Programmable soft-start slew rate
Standalone or microcontroller operation
Differential load voltage sense
AC mains undervoltage detection (ac sense)
Overvoltage protection
Secondary-Side Controller with
Current Share and Housekeeping
ADM1041A
INTERFACE AND INTERNAL FEATURES
SMBus interface (I2C-compatible)
Voltage-error amplifier
Differential current sense
Sense resistor or current transformer option
Overvoltage protection
Undervoltage protection
Overcurrent protection
Overtemperature protection
Start-up undervoltage blanking
Programmable digital debounce and delays
352-byte EEPROM available for field data
160-byte EEPROM for calibration
Ground continuity monitoring
APPLICATIONS
Network servers
Web servers
Power supply control
PWM
CONTROLLER
VDD
VDD
RS
VDD
BIAS
VDD
THERMISTOR
OTP
OrFET
VOUT
RLOAD
VDD
ADM1041A
CBD
FG
CS–/VLS
CS+
VDD
VCMP
ICT
FD
SHRO
SHRS
VS+
VS–
PULSE AC_OK
MON2 DC_OK
PEN
PSON
CCMP
SCMP
ADD0
SCL
GND
SDA
GND
SHARE BUS
VDD
VOUT
VS+
VS–
MICRO-
CONTROLLER
OPTIONAL
ISOLATION BARRIER
Figure 1. Typical Application Circuit
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved.
1 page  
ADM1041A
Figure 4. ADM1041A Diagram, Part 2
Rev. 0 | Page 5 of 56
5 Page 
Parameter
OVP Noise Filter
UVP Noise Filter
PSON7
Input Low Level8
Input High Level8
Debounce
PEN7, DC_OK7, CBD, AC_OK
Open-Drain N-Channel Option
Output Low Level = On8
Open-Drain P-Channel
Output High Level = On8
Leakage Current
DC_OK7
DC_OK, On Delay (Power-On and OK Delay)
DC_OK, Off Delay (Power-Off Early Warning)
SMBus, SDL/SCL
Input Voltage Low8
Input Voltage High8
Output Voltage Low8
Pull-Up Current
Leakage Current
ADD0, HARDWIRED ADDRESS BIT
ADD0 Low Level8
ADD0 Floating
ADD0 High8
SERIAL BUS TIMING
Clock Frequency
Glitch Immunity, tSW
Bus Free Time, tBUF
Start Setup Time, tSU;STA
Start Hold Time, tHD;STA
SCL Low Time, tLOW
SCL High Time, tHIGH
SCL, SDA Rise Time, tR
SCL, SDA Fall Time, tF
Data Setup Time, tSU;DAT
Data Hold Time, tHD;DAT
EEPROM RELIABILITY
Endurance9
Data Retention10
Min Typ
5
300
2.0
80
0
40
160
2.4
−5
400
200
800
1600
2
0
1
4
2.2
100
−5
VDD/2
VDD − 0.5
4.7
4.7
4
4.7
4
250
300
100 250
100
Max Unit
25 μs
600 μs
0.8 V
V
ms
ms
ms
ms
ADM1041A
Test Conditions/Comments
Reg 0Fh[4:2] = 010 or 100.
See Table 24.
Reg 0Fh[4:2] = 011 or 101.
See Table 24.
Reg 0Eh[4:2] = 00x. See Table 23.
Reg 0Fh[1:0] = 00. See Table 24.
Reg 0Fh[1:0] = 01. See Table 24.
Reg 0Fh[1:0] = 10. See Table 24.
Reg 0Fh[1:0] = 11. See Table 24.
0.4
+5
0.8
0.4
350
+5
0.4
400
50
1000
300
V
V
μA
ms
ms
ms
ms
ms
ms
ms
ms
V
V
V
μA
μA
V
V
V
kHz
ns
μs
μs
μs
μs
μs
ns
ns
ns
ns
k cycles
Years
ISINK = 4 mA
VOH_PEN
ISOURCE = 4 mA
Reg 0Fh[7:5] = 00x. See Table 24.
Reg 0Eh[1:0] = 00. See Table 23.
Reg 0Eh[1:0] = 01. See Table 23.
Reg 0Eh[1:0] = 10. See Table 23.
Reg 0Eh[1:0] = 11. See Table 23.
Reg 10h[7:6] = 00. See Table 25.
Reg 10h[7:6] = 01. See Table 25.
Reg 10h[7:6] = 10. See Table 25.
Reg 10h[7:6] = 11. See Table 25.
VDD = 5 V, ISINK = 4 mA
Floating
See Figure 5
Rev. 0 | Page 11 of 56
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADM1041A.PDF ] | |
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