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TSM115
3.3V +5V 12V Housekeeping IC
PRELIMINARY DATA s s s s s s s s s Over voltage and under voltage protection for 3.3V +5V and 12V without external components Over current protection for 3.3V 5V and 12V with external components Under voltage blanking fonction Power good input/output Externally adjustable PG delay Fault output Remote output Externally adjustable remote delay 2kV ESD protection
N DIP-20 (Plastic Package)
D SO-20 (Plastic Micropackage)
PIN CONNECTIONS (top view)
1 2 3 4 5 6 7 8 9 Fault Gnd nc PG Tuv/Tpg Rem Vcc 20 Rcrnt 19 nc 18 Is3.3 17 Vs3.3 16 Is12 15
DESCRIPTION
The TSM115 integrated circuit incorporates all sensing circuitry to protect from over and under voltage and over current a multiple output power supply (3.3V, +5V and 12V). TSM115 incorporates all the necessary functions for Housekeeping features which allow safe operation in all conditions, and very high system integration.
Trem/Tsur Vs-12 14 nc Bsense Vs12b 13 Vs12a 12 Is5 11
APPLICATION
s PC SMPS Multiple Power Line Housekeeping IC (3.3V +5V 12V)
10 Vs5
ORDER CODE
Part Number TSM115CN TSM115CD Temperature Range 0 to 95C Package DIP SO Packaging Tube Tube or Tape & Reel Marking TSM115C M115
July 2004
1/17
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TSM115 1 Pin Description
Name Fault Gnd PG Pin # 1 2 4 Type Open collector Power supply Open collector Function
Pin Description
Tuv/Tpg
5
Timing capacitor
Rem
6
Control Input pin
Trem/Tsur
7
Timing capacitor
Bsense Vs5 Is5 Vs12a Vs12b Vs-12 Is12 Vs3.3 Is3.3 Rcrnt Vcc
9 10 11 12 13 14 15 16 17 19 20
Control input pin Analog input Analog Input Analog input Analog input Analog input Analog Input Analog input Analog Input Analog input Power supply
Fault output. Output of the over voltage and under voltage comparators. Signal ground and silicon substrate Output of the Tpg comparator. This pin goes low upon an under voltage condition. Except for the delay set by the Tpg capacitor this pin always reflects the actual state of the under voltage sensing comparators output. A capacitor from this pin to Gnd provides a delay between outputs rail voltage within regulation and PG output going high. Capacitor discharges whenever Bsense low or Rem high or UVP is detected. This capacitor will also provide the under voltage blanking function when the voltage at this pin is larger than the Vref voltage. The under voltage function resume. Pulling this pin high will send the Fault pin high latching off the power supply, reset the internal latch, discharge the start-up timing capacitors, Tuv and Tpg capacitors, allowing normal start up of the system. Pulling this pin low will send the Fault pin low, initiating a normal start up function. A capacitor from this pin to Gnd will delay the Fault signal when the Rem pin is used to shut down the power supply. The PG will signal a power failure warming immediately, but the Fault pin shut down of the power will be delayed. This capacitor will also provide the overcurrent blanking function (surge current). Non inverting input to the Bsense voltage sensing comparator. Pulling this pin lower than 2.5V will cause PG goes low and Tuv goes low. Over voltage and under voltage detection for +5V rail 5V overcurrent control sense input. Over voltage and under voltage detection for +12V rail Over voltage and under voltage detection for +12V rail Over voltage and under voltage detection for -12V rail. 12V overcurrent control sense input. Over voltage and under voltage detection for 3.3V rail. 3.3V overcurrent control sense input. A resistor from this pin to Gnd will provide the internal constant current. Supply input voltage
ABSOLUTE MAXIMUM RATINGS
Symbol Vcc Vpmax Vnmax VDBTT VTER PT Tstg Tj ESD
1
DC Supply Voltage DC Supply Voltage Terminal voltage Vs3.3, Is3.3, Vs12, Is12, Vs5, Is5 Terminal voltage Vs-12 VTpg/Tuv, VTrem/Tsur input voltage Other terminals Power dissipation Storage temperature Junction temperature Electrostatic Discharge
Value -0.3 to 18 -0.3 to 18 -15 to 5 -0.3 to 3.3V -0.3 to Vcc 1 -55 to 150 150 2
Unit V V V V V W C C kV
1) All voltage values, except differential voltage are with respect to network ground terminal.
OPERATING CONDITIONS
Symbol Vcc Toper DC Supply Conditions Temperature range Parameter Value 3 to 15 0 to 95 Unit V C
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Electrical Characteristics 2 Electrical Characteristics
Symbol Parameter Test Condition Min Typ Max
TSM115
Tamb = 25C, Vcc=5V, Vs3.3=3.3V, Vs5=5V, Vs12= 12V, Vs-12=-12V, Rem=Low, Rcrnt=12k
Unit
Total Current Consumption Icc Iccstdby Vccmin Total Supply Current Total Supply Current in Stand-by Condi- Rem=high tions Vs3.3=0V, Vs5=0V Min operating Vcc Vs12=0V, Vs-12=0V Tmin < Tamb < Tmax 1 1 3 mA mA V
Over Voltage and Under Voltage Protection Vov12 Vuv12 Iin12b Vov5 Vuv5 Iin5 Dis5 Vov3.3 Vuv3.3 Iin3.3 Vov-12 Vuv-12 Iin-12 Dis-12 Over Voltage Sense 12V Under Voltage Sense 12V Input current Voltage sense 12V Over Voltage Sense 5V Under Voltage Sense 5V Input current Voltage Sense 5V Disable Voltage Sense 5V Over Voltage Sense 3.3V Under Voltage Sense 3.3V Input current Voltage Sense 3.3V Over Voltage Sense -12V Under Voltage Sense -12V Input current Voltage sense -12V Disable Voltage Sense -12V 13.6 8.85 50 6.01 4.00 50 7 3.88 2.52 25 -15.49 -9.99 -200 14 9.12 100 6.20 4.12 100 7.5 4.00 2.60 50 -15.04 -9.70 -100 3.3 14.4 9.39 200 6.39 4.24 200 8 4.12 2.68 100 -14.59 -9.41 -50 V V A V V A V V V A V V A V
Internal delay time Tdelay Internal time 30 37 45 s
Over current Protection Is3.3 Vicm3.3 Vio3.3 Is5 Vicm5 Vio5 Is12 Vicm12a Vio12a Vicm12b Vio12b Iin12a Bsense Thbs Ilbs Iobs DIobsT Vbsoh Iclbs Vinbs Bsense voltage threshold Bsense current leakage Current source Current source drift in temperature Clamp voltage Clamping current Input voltage 1.218 Bsense=1V Bsense=1.5V Tmin < Tamb < Tmax IoBsense=1A Bsense > 2.5V Tmin < Tamb < Tmax 90 2.00 3 -0.3 0 100 5 2.15 3.6 1.282 1 110 2.30 5 2.5 V A A A V mA V Current source Input common mode Input offset voltage Current source Input common mode Input offset voltage Current source Input common mode Input offset voltage Input common mode Input offset voltage Input current 46 0.7 46 0.7 46 0.7 0.7 2 10 50 2 50 2 50 2 54 Vov3.3 3 54 Vov5 3 54 Vov12 3 Vov12 3 A V mV A V mV A V mV V mV A
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TSM115
Electrical Characteristics
Symbol
Parameter High threshold Low threshold
Test Condition From Low to high From high to low
Min 1.87 1.0
Typ 1.93 1.25
Max 1.99 1.4
Unit V V
Rem
THrm TLrm
Power Good (PG) Ipgol Vpgol Tpgr Sink current Low output voltage Rise time PG VPg=0.4V Ipg=10mA Rpg=1K 10 0.4 500 mA V ns
Under Voltage Blanking (Tuv) and Power Good (Tpg) times Iotuvtpg THtuv TLtuv THtpg TLtpg Idtuvtpg Vtuvtpgol Vtuvtpgoh VinTuvTpg DIotuvtpg Current output source High threshold blanking Low threshold blanking High threshold power good Low threshold power good Current discharge of TuvTpg Low output voltage Clamp voltage Input voltage Current source drift in temperature Vtuvtpg = 0V From low to high voltage From high to low voltage From low to high voltage From high to low voltage Iotutpg = 1mA 2.1 -0.3 Tmin < Tamb < Tmax 2.3 4.5 0.287 1.218 0.9 2 5 0.312 0.25 1.25 1 5 5.5 0.337 1.282 1.1 0.2 2.5 2.3 1 A V V V V mA V V V A
Remote (Trem) and Surge current blanking (Tsur) times Iotrm Iotsur THtrm TLtrm Idtrmtsur Vtrmtsurol Vtrmtsuroh Vintrmtsur DIotrm DIotsur Fault Ifltol Vfltol THVcc TLVcc HystVcc Rcrnt VRcrn Output voltage 1.20 1.25 1.30 V IFault sink current Low output voltage High threshold voltage, Vcc low to high Low threshold voltage, Vcc high to low Vcc hysteresis : THVcc-TLVcc VFault=0.4V IFault=10mA Rem low, all lines between UV and OV. 10 0.4 2.95 2.65 TBD mA V V V mV TRem current source Tsur current source High thresold voltage TRem Low thresold voltage TRem Current discharge of TRemTsur Low output voltage Clamp voltage Input voltage Current source drift in temperature Current source drift in temperature Vtrmtsur = 0V Vtrmtsur = 0V From low to high From high to low Iotmtsur = 1mA 2.1 -0.3 Tmin < Tamb < Tmax Tmin < Tamb < Tmax 2.3 90 9 1.218 0.9 2 100 10 1.25 1 5 110 11 1.282 1.1 0.2 2.5 2.3 5 500 A A V V mA V V V A nA
TBD
300
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Electrical Characteristics
Fig. 1: Application Schematic
TSM115
Primary Rectification
MAIN Converter
12V 5V 3.3V -12V
PWM + OPTO + Vref Auxiliary converter
PWM + OPTO + Vref Over & Undervoltage Protection Logic FAULT Sequencer TSM115 PG REM
Fig. 2: Internal Bloc Schematic
POWER SUPPLY
12V 5V 3.3V rsc12b rsc12a
Vs12a Vs5
TSM115 FAULT TO PWM Crem TO MOTHERBOARD
Vs3.3 OVP rsc3.3 rsc5 UVP Rocp12V Is12 Rocp5V OCP Is5
LOGIC BLOCK
MAIN POWER SUPPLY
PG Rem Trem/Tsur Tuv/Tpg Cpg Gnd
12V 5V 3.3V -12V
Rocp3.3V Is33 Vs-12 Bsense Rcrnt
ybtsV
12V
Vs12b
Rocp3.3
5Vstby Rocp12 Rocp5
ybtsV
b21csr
rsc12a rsc5 rsc3.3
12V 12V 5V 3.3V -12V
ccV
ybtsV5
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TSM115
Principle of Operation and Application Hints
Fig. 3: Internal Detailed Schematic
Vs12a
Vs12b
Vs-12
Vs3.3
Is3.3
Is12
Vs5
Tpg IotuvTpg 5A
Is3.3 50A
Is5 50A
Is12 50A
Iobs 100A Bsense Bsense
Rem 1.93V 1.2V
OV_UV_OC TDelay = 30s Fault
I1
V1
V52.1
Idtrmtsur 5mA
Q! R
V52.1
Trem Tsur
Trem
Q
S
Iotrem 100A
Iotsur 10A
V52.1=ferV
Q! S hctaL vuT QR
meR
V1
V5.2
V52.1
IdTuvTpg 5mA
V52.1
Tuv Tpg
X4
Tuv
OCP3.3
OCP5
OCP12A
OCP12B
OVP -rails
OVP +rails
UVP -rails
UVP +rails 1.475 1.125
Vref
Rcrnt
ferV
Vcc Gnd
Is5
Pg
V52.1 V1
V52.1 V5.2 V5.2 V52.1 ferV
V5.2
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TSM115 1 - Rem On/Off
Electrical Characteristics 2 - UVP Function Rem On/Off, Tuv start up OK
V5
V5 Uvp
Gnd
Gnd
V-12 Bsense
V-12 Bsense
Rem
Rem Trem/Tsur 100A 100A
Trem/Tsur Tuv/Tpg 5A 5A Vtpg Vtuv Tuv
Tuv/Tpg Fault
Fault PG
PG Tuv
7/17
TSM115 3 - OVP/UVP Function Rem On/Off, Tuv OK
Electrical Characteristics 4 - OVP/UVP Function Rem On/Off, Tuv Nok
V5
Ovp Uvp
V5
Ovp Uvp
Gnd
Gnd
V-12 Bsense
V-12 Bsense
Rem
Rem
100A
100A
Trem/Tsur Tuv/Tpg 5A Vtpg Vtuv Tuv
Trem/Tsur Tuv/Tpg
Vtuv Tuv Tdelay
Fault
Fault
PG
PG
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Electrical Characteristics 5 - Vcc turn On/off, Bsense 6 - OCP Rem On/Off
TSM115
Vcc V5 Uvp Gnd
OCP
V5 Uvp Gnd
V-12
V-12 Bsense
Bsense
Rem
Rem
10A
100A
Trem/Tsur
Trem/Tsur Tsur
Tuv/Tpg
5A Vtpg Vtuv
Tuv/Tpg Tuv
Tdelay
Fault
Fault
Pg
PG Tpg
Tpg
9/17
TSM115 7 - Rem On/Off with OCP during Tpg
Electrical Characteristics 8 - Rem On/Off with OCP during Tuv
OCP
OCP
V5 Uvp Gnd Uvp Gnd
Uvp
V5 V-12
V-12 Bsense Bsense
Rem
Rem
Trem/Tsur 10A
Trem/Tsur
100A
10A
Tsur
Tsur
Tuv/Tpg
Fault
Tuv/Tpg Tdelay
Fault
Tuv
Tdelay
Pg Tpg
Pg
10/17
Electrical Characteristics 9 - Fault Vcc start up
Vcc
TSM115 10 - Fault Vcc shut down
Vcc
V5
V5
Gnd
Gnd
V-12
V-12 Bsense
Bsense Rem
Rem
Trem/Tsur
Trem/Tsur Trem Tuv/Tpg Vtpg Tuv/Tpg Fault Tuv Vtuv
Fault PG
PG Tpg
11/17
TSM115 11 - Fault Vcc shut down start up
Vcc VccLH VccHL Vcc V5 VccLH
Electrical Characteristics 12 - Fault Vcc start up and shut down
VccHL
V5
Gnd
Gnd
V-12 Bsense
V-12
Bsense
Rem
Rem
Trem/Tsur
Trem/Tsur
Tuv/Tpg Vtpg Vtuv Tuv Tuv/Tpg Tuv Vtpg Vtuv
Fault PG
Fault
PG Tpg Tpg
12/17
Electrical Characteristics 13 - Vcc turn on, OVP function, Remote On/Off
TSM115
Vcc V5 Uvp Gnd Ovp Uvp
V-12
Bsense
Rem
100A
Trem/Tsur 5A Vtpg Vtuv Tuv
10A Vtpg Vtuv
Tuv/Tpg Tuv
Fault
PG Tpg
PG Tdelay Tpg
13/17
TSM115 14- Vcc turn On, AC line resume Bsense
Electrical Characteristics
Vcc V5
Gnd
V-12
Bsense
Bsense
Rem
Rem
Trem/Tsur
Trem/Tsur
5A Vtpg Vtuv
Tuv/Tpg Tuv
Fault PG
Tpg
14/17
Electrical Characteristics TSM115: Housekeeping IC
TSM115 is a one chip solution for all PC SMPS: it integrates on one chip the Housekeeping Circuitry (Over and under voltage and over current protections, with adequate sequencing).
TSM115 FAULT
The Over Voltage and Under Voltage Circuits outputs are ORed before activating a latch. When activated, this latch commands the full switch OFF of the main power lines (3.3V, 5V, 12V) by an external link between the housekeeping and the primary PWM circuits via the main optocoupler or any other device.
Multiple Power Line Protection
The TSM115 Housekeeping Circuit is dedicated to 3.3V, 5V and 12V power lines protection. It integrates a multiple Over and under Voltage Protection Circuit and a multiple over current Protection Circuit as well as all the necessary logic and transient timing management circuits for optimal and secure communication with the motherboard, during start up, switch off and stabilized conditions.
Power Good
The Under Voltage Circuits are Ored to switch the Power Good output active (PG) to warn the motherboard that the voltage of at least one of the three power lines is out of range. The PG activation bears an internal Tpg delay circuitry which can be adjusted with an external capacitor (Cpg).
Over Voltage Protection
The Over Voltage Protection Circuit is made of comparators with internal voltage thresholds which do not require any external components for proper operation. The outputs of these comparators are ORed.
Remote Control
The remote control information from the mother board, enters via the Remote pin (REM) to activate an internal latch. When the Remote pin is active, the external Fault link between Housekeeping circuit and the PWM generator is active (high = PWM OFF) and the PG pin is active (high). Note that to reset effectively the latch, a minimum width Remote pulse should be applied thanks to an internal delay circuitry (Trem) which can be adjusted with an external capacitor (Crem).
Under Voltage Protection
The Under Voltage Protection Circuit is made of comparators with internal voltage thresholds which do not require any external components for proper operation. The outputs of these comparators are ORed, and blanked by an internal delay circuitry (Power Up Blanking - Tuv) which can be adjusted with an external capacitor (Cuv). This allows that during power up, the under voltage protection circuit is inhibited.
Over Current Protection
The Over current Protection Circuit is made of comparators with external thresholds which can be adjusted by changing a resistor. The outputs of these comparators are ORed.
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TSM115 3 Package Mechanical Data
Package Mechanical Data
Plastic DIP-20 (0.25) MECHANICAL DATA
mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.34 8.5 2.54 22.86 7.1 3.93 0.130 0.053 0.254 1.39 0.45 0.25 25.4 0.335 0.100 0.900 0.280 0.155 1.65 TYP MAX. MIN. 0.010 0.055 0.018 0.010 1.000 0.065 TYP. MAX. inch
P001J
16/17
Package Mechanical Data Package Mechanical Data
SO-20 MECHANICAL DATA
mm. DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 7.40 0.50 12.60 10.00 1.27 11.43 7.60 1.27 0.75 8 (max.) 0.291 0.020 13.00 10.65 0.35 0.23 0.5 45 (typ.) 0.496 0.393 0.050 0.450 0.300 0.050 0.029 0.512 0.419 0.1 TYP MAX. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.020 0.004 MIN. TYP. MAX. 0.104 0.008 0.096 0.019 0.012 inch
TSM115
PO13L
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Repubic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com
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