L5961
MOST power management device (PMD)
Data Brief
Features
5V or 3.3V / 650mA DC-DC Converter with external sync 5V or 3.3V/ 40mA standby voltage regulator 5V or 3.3V / 60mA switchable voltage regulator Very low quiescent current (zero power mode and ultra zero power mode feature) Power management fully compatible to MOST specification Provides power supply for physical layer and control unit Switch to power pulse generator Reacts on four different wake-up events Switch to power pulse (STPP) Light ON (for status) Activity on Diagnostic_I/O ON/OFF switch I2C interface Programmable system configuration Reset generator Intrinsic diagnostic transceiver (standard LIN2.0) 3 battery detectors for battery voltage monitoring Watchdog circuit PowerSS0-36 and PowerSO-36 packages options
PowerSSO-36 PowerSO-36
for the physical layer, the Network Controller and the External Host Controller of a MOST Node. The L5961 also allows the implementation of a generic MOST node design that can be reproduced "as is" in any other project, thus avoiding the activities of redesign and reverification of MOST PMD compliance The L5961 implements complete monitoring of the supply voltage (over-voltage, under-voltage, critical voltage), moreover it supports multiple power modes like Zeropower-mode (where one complete MOST node sinks around 25A current) and Ultra-zero power mode (5A). All the diagnostic protocols from major carmakers are supported and the device reacts to many different wake-up events. The L5961 is completely configurable through its I2C bus and fully compatible with MOST specifications. L5961 has been specified in cooperation with SMSC and represents a "chipset" solution when used with SMSC's MOST network interface controllers (INIC or NIC). Table 1. Device summary
Package PowerSSO-36 PowerSO-36 Packing Tube Tube
Description
The L5961 MOST PMD integrates all the discrete circuitry usually necessary to implement power supplies and power management for a MOST node. It includes intrinsic MOST specific power management together with sophisticated diagnostic and fail-safe functions. The MOST PMD is designed to provide direct power supply
Order code L5961 L5961PD
Januar y 2008
Rev 1
1/7
www.st.com 7
For further information contact your local STMicroelectronics sales office.
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UB at t _F L o ad Dump Protection Filtering
VS1 VS2 STPPC
Figure 1.
UB at t
RSTPPC
L5961
CTRL V3_SW PGND COMP SYNC V3 RCOMP CCOMP C L
GND
V2 CV2
CSTPPC
STPP Co m p ar at o r External Power Supply (Option)
FOT
V1 CV1 V1_A DJ RSTN UZ Pen VCC STA TUS DIA G_I/O ON_SW DIA G_TXD DIA G_RXD V3EN Wat c h d o g WDI PS0 PS1
5V/ 60m A Reg 2
DC-DC Co n v er t er 3.3/5V 650m A
FOR
3.3/5V 40m A Reg 1 RESET
UB at t GND Wak e-u p Di ag n o s i s Di ag n o s t i c T r a n s c e i v er
V3SEL
Co n t r o l Logic
Block and application diagram example (with INIC)
Block and application example (with INIC)
Co m p ar at o r s I2C - Interface ON-s w i t c h d et ec t o r
AD SDA SCL ON-s w i t ch
Wak e-u p Di ag n o s i s
GND
INTN GNDSUB PWROFF TAB
In t er n al 5V-p o w er supply
EHC
VCC RSTN
INIC
TxD
RxD
VC C
Block and application diagram example (with INIC)
RSTPPC = 10kOhm CSTPPC = 0.1F CV1 = CV2 =1F (ESR<0.1Ohm) C = 470F (5mOhm
Zer o p o w er mode supplied No r m al mode supplied
AC00261
L5961
L5961
Functionality details
2
Functionality details
Provides three basic states: Zero power mode All external HW is switched off. PM-chip is switched Off except "REG1 voltage regulator", "Switch-to-power-pulse comparator" and "Control logic". Ultra zero power mode All external HW is switched off. PM-chip is switched Off except "ON/OFF Control logic". PMD can be woken up to reach "Zero current mode" by activities on DIAG_I/O line Normal PMD and external HW is powered. One of the four possible wake-up conditions occurs and the wake-up event is confirmed either by means of PWROFF pin or I2C bus. To confirm the on-event: - PWROFF pin must be driven low OR - the right I2C bus command is provided. Switch to power pulse (STPP) Light ON (for status) Activity on Diag_I/O ON/OFF switch
Reacts on four different wake-up events
I2C interface (allowing system programmability) Generation of switch to power pulse (STPP) Online battery monitoring, reacts on battery changes/ events: Over voltage Critical voltage Under voltage
Hardware watchdog triggered with discrete input, available to monitor the activity of the controller Fail-safe behavior: Intrinsic filtering time of wake-up events Protection against software caused failures Over-temperature warning / thermal protection
Diagnostic transceiver compatible to standard LIN2.0
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Package information
L5961
3
Package information
In order to meet environmental requirements, ST (also) offers these devices in ECOPACK packages. ECOPACK packages are lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 2.
A A2 a1 b c D (1) E (1) e e3 F G G1 H h k L M N O Q S T U X Y
PowerSSO-36 mechanical data and package dimensions
D IM . MIN. 2.15 2.15 0 0.18 0.23 10.10 7 .4 0.5 8.5 2.3 0.10 0.06 10.50 0.40 5 0.55 4.3 10 1.2 0.8 2.9 3.65 1.0 4.1 6.5 4 .7 7 .3 0.161 0.256 0.047 0.031 0.114 0.144 0.039 0 . 1 85 0 . 2 87 0.90 0.022 0.169 10 mm TYP. M AX . 2.47 2.40 0.075 0.36 0.32 10.50 7.6 MIN. 0.084 0.084 0 0.007 0.009 0.398 0.291 0.019 0.335 0.090 0.004 0 . 0 02 0.413 0.016 5 0.035 inch TYP. MAX. 0.097 0.094 0.003 0.014 0.012 0.413 0.299
OUTLINE AND MECHANICAL DATA
10.10
0.398
(1) "D" and "E" do not include mold flash or protrusions Mold flash or protrusions shall not exceed 0.15 mm per side(0.006")
PowerSSO-36 (exposed pad)
A2
A
hx45
G
LEAD COPLANARITY
A
D
e
stand-off
a1
T
Y
Gauge plane 0.25
L
O
H E X
F
U
B
0.1 M A B
b e3
S
BOTTOM VIEW
7587131 A
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k
c
Q
L5961 Figure 3.
Package information PowerSO-36 mechanical data and package dimensions
D IM . A a1 a2 a3 b c D D1 E E1 E2 E3 e e3 G H h L N s 0.8 0 15.50 5.80 0.65 11.05 0.10 15.90 0.6102 1.10 1.10 0.0315 10 (max) 8 (max) 0 0.22 0.23 15.80 9.40 13.90 10.90 0.10 mm MIN. TYP. M AX . 3.60 0.30 3.30 0.10 0.38 0.32 9.80 14.5 2.90 6.20 0.2283 0.0256 0.4350 0.0039 0.6260 0.0433 0.0433 0.0087 0.0091 0.3701 0.5472 0.0039 MIN. inch TYP. MAX. 0.1417 0.0118 0.1299 0.0039 0.0150 0.0126 0.6299 0.3858 0.5709 0.4370 0.1142 0.2441
OUTLINE AND MECHANICAL DATA
16.00 0.6220
11.10 0.4291
PowerSO-36
Note: "D and E1" do not include mold flash or protusions. - Mold flash or protusions shall not exceed 0.15mm (0.006") - Critical dimensions are "a3", "E" and "G".
0096119 C
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Revision history
L5961
4
Revision history
Table 2.
Date 21-Jan-2008
Document revision history
Revision 1 Initial release. Changes
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L5961
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