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Summit Microelectronics

SMH4042A Datasheet Preview

SMH4042A Datasheet

Distributed Power Hot-Swap Controller

No Preview Available !

SUMMIT
MICROELECTRONICS, Inc.
SMH4042A
Dwwisw.tDraitabSuheteet4dU.coPmower Hot-Swap Controller for CompactPCI
Preliminary
FEATURES
l Full Voltage Control for Hot Swap Applications
w 15V High Side Driver Generation Allows use
of Low On Resistance N-Channel FETs
w Under-Voltage Lockout
w Electronic Circuit Breakers
w Card Insertion Detection
w Host VCC Detection
w Card Voltage Sequencing
FUNCTIONAL BLOCK DIAGRAM
28
VCC
ISLEW
3
A0
8
A1
10
A2
11
SCL
19
SDA
18
CBI_3
24
EEPROM
Memory
Array
CBI_5
1
+
+
23 HST_3V_MON
CONTROL
+
+
l Flexible Reset Control
w Low Voltage Resets
w Host Reset Filtering
w Soft Reset
l Adjustable Power On Slew Rate
l Suppoprts Mixed Voltage Cards
l Two Wire I2C Serial Data Interface
w 4k-Bit E2PROM Memory
BD_SEL1#
13
BD_SEL2#
12
1VREF 5
VGATE3 22
VGATE5 27
LOCAL_PCI_RST
LOCAL_PCI_RST#
20
9
SGNL_VLD#
16
HEALTHY# 15
DRVREN#
2
ASSOCIATE
MEMBER
CARD_3V_MON
21
CARD_5V_MON
25
1.25V
+
+
FAULT#
4
PWR_EN
7
17 PCI_RST#
VSEL
6
GND
14
©SUMMIT MICROELECTRONICS, Inc., 2003 • 1717 Fox Drive, San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 • www.summitmicro.com
Characteristics subject to change without notice
2070 9.1 5/27/03
1




Summit Microelectronics

SMH4042A Datasheet Preview

SMH4042A Datasheet

Distributed Power Hot-Swap Controller

No Preview Available !

SMH4042A
www.DataSheet4U.com
DESCRIPTION
The SMH4042A is a fully integrated hot swap controller that
provides complete power control for add-in cards ranging in
use for basic hot swap systems to high availability
CompactPCIsystems. It detects proper insertion of the
card and senses valid supply voltage levels at the
backplane. Utilizing external low on-resistance N-channel
MOSFETs, card power is ramped by two high-side driver
outputs that are slew-rate limited at 250V/s.
The SMH4042A continuously monitors the host supplies,
the add-in card supplies and the add-in card current. If
the SMH4042A detects the current is higher than the
programmed value it will shut down the MOSFETs and
issue a fault status back to the host.
The internal 512 × 8 E2PROM can be used as configuration
memory for the individual card or as general purpose
memory. The proprietary Data Download mode provides
a more direct interface to the E2PROM, simplifying
access by the add-in card’s controller or ASIC.
Programming of configuration, control and calibration
values by the user can be simplified with the interface
adapter and Windows GUI software obtainable from
Summit Microelectronics.
PIN CONFIGURATION
CBI_5
DRVREN#
ISLEW
FAULT#
1VREF
VSEL
PWR_EN
A0
LOCAL_PCI_RST#
A1
A2
BD_SEL2#
BD_SEL1#
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 VCC
27 VGATE5
26 nc
25 CARD_5V_MON
24 CBI_3
23 HST_3V_MON
22 VGATE3
21 CARD_3V_MON
20 LOCAL_PCI_RST
19 SCL
18 SDA
17 PCI_RST#
16 SGNL_VLD#
15 HEALTHY#
2070 PCon
2
2070 9.1 5/27/03
SUMMIT MICROELECTRONICS, Inc.


Part Number SMH4042A
Description Distributed Power Hot-Swap Controller
Maker Summit Microelectronics
Total Page 28 Pages
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