TSM114IN

TSM114 3.3V 5V ±12V Housekeeping IC s s s s s s s s s Over voltage and under voltage protection for 3.3V 5V and ±12V without external components Under voltage blanking function Power good input/output Externally adjustable PG delay Fault output Remote input Externally adjustable remote delay Precision voltage reference 2kV ESD protection (HBM) N DIP-14 (Plastic Package) Description The TSM114 integrated circuit incorporates all of the sensing circuitry required to regulate and protect a multiple-output power supply (3.3V, 5V, and ±12V) from both over-voltage and under-voltage. The TSM114 also includes all of the necessary functions for housekeeping features, which allow for safe operation under all conditions, as well as very high system integration. A precise voltage reference is also integrated in the TSM114 Pin Connections (top view) 1 2 3 4 5 6 7 Fault Gnd PG Tpg Rem Trem Tuv Vcc 14 Rcrnt 13 Vs3.3 12 Vs-12 11 Vs12 10 Vs5 9 Applications s PC SMPS multiple Power Line Housekeeping IC (3.3V 5V ±12V) Bsense 8 Order Codes Part Number TSM114IN Temperature Range 0 to +95°C Package DIP14 Packaging Tube Marking TSM114 October 2004 Revision 1 1/14 TSM114 1 Pin Descriptions Pin Descriptions Table 1: This table gives the pin description for DIP14 package Name Fault Gnd PG Pin # 1 2 3 Timing capacitor Tpg 4 Control Input pin Rem 5 Timing capacitor Trem 6 Timing capacitor Tuv 7 Control input pin Analog input Analog input Analog input Analog input Analog input Power supply Type Open collector Power supply Open collector Function 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. 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. A capacitor from this pin to Gnd will provide the under voltage blanking function. This capacitor is charging when the Bsense and Rem signal is in the right state. As the voltage at this pin is larger than the Vref voltage. The under voltage function resume. 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 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 3.3V rail. This function is disabled by connecting to Vcc A resister from this pin to Gnd will provide the internal constant current. Supply input voltage Bsense Vs5 Vs12 Vs-12 Vs3.3 Rcrnt Vcc 8 9 10 11 12 13 14 2 Absolute Maximum Ratings Table 2: Key parameters and their absolute maximum ratings Symbol Vcc Vpmax Vnmax VDBTT VTER PT Toper Tstg Tj ESD DC Supply Voltage 1 DC Supply Voltage Value -0.3 to 25 -0.3 to 25 -16 to Vref -0.3 to 3.3V -0.3 to Vcc 1 0 to 95 -55 to 150 150 2K Unit V V V V V W °C °C °C V Terminal voltage V12, V5, V3.3 Terminal voltage V-12 VTuv, VTpg, VTrem input voltage Other terminals Power dissipation Operational temperature Storage temperature Junction temperature Electrostatic Discharge 1) All voltage values, except differential voltage are with respect to network ground terminal. Table 3: Operating Conditions Symbol Vcc 2/14 DC Supply Conditions Parameter Value 4.2 to 24 Unit V Electrical Characteristics 3 Electrical Characteristics TSM114 Table 4: Tamb = 25°C, Vcc=5V, Vs3.3=1.3V, Vs5=5V, Vs12= 12V, Vs-12=-12V, Rem=Low, Rcrnt=24KΩ Symbol Parameter Test Condition Min Typ Max Unit Total Current Consumption Icc Vccmin Total Supply Current Min operating Vcc 4 6 8 4.2 mA V Over Voltage and Under Voltage Protection Vov12 Vuv12 Iin12 Vov5 Vuv5 Iin5 Vov3.3 Vuv3.3 Iin3.3 Dis3.3 Vov-12 Vuv-12 Iin-12 Dis-12 Tdelay Bsense Thbs Ilbs Iobs DIobsT Vbsoh Vinbs Bsense voltage threshold Bsense current leakage Current source Current source drift in temperature Clamp voltage Input voltage 2.43 -1.2 225 3.3 -0.3 2.50 0 250 10 3.6 2.562 275 3.9 3.3 V µA µA µA V V 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 Over Voltage Sense 3.3V Under Voltage Sense 3.3V Input current Voltage Sense 3.3V Disable Voltage Sense 3.3V1 Over Voltage Sense -12V Under Voltage Sense -12V Input current Voltage sense -12V Disable Voltage Sense -12V Internal time 13.5 8.85 100 6.01 4.00 100 1.43 1.09 -2 3.0 -15.49 -9.99 -300 1.5 18 14 9.12 200 6.20 4.12 200 1.475 1.125 0 3.3 -15.04 -9.70 -200 2 30 14.4 9.39 300 6.39 4.24 300 1.52 1.16 2 4.0 -14.58 -9.39 -100 2.5 42 V V µA V V µA V V µA V V V µA V µs Bsense=3V Tmin. < Tamb < Tmax IoBsense=1µA Under Voltage Blanking (Tuv) Iotuv THtuv TLtuv Idtuv Vtuvol Vtuvoh VinTuv DIotuv Rem THrm TLrm TRem Iotrm THtrm TLtrm TRem current source High thresold voltage TRem Low thresold voltage TRem From low to high From high to low 9 2.425 1.9 10 2.50 2 11 2.575 2.1 µA V V High threshold Low threshold From Low to high From high to low 1.87 1 1.93 1.2 2.00 1.4 V V Current output source High threshold blanking Low threshold blanking Current discharge of Tuv Low output voltage Clamp voltage Input voltage Current source drift in temperature From low to high voltage From high to low voltage 9 2.425 1.9 2 3.3 -0.3 Tmin. < Tamb < Tmax 10 2.50 2 5 3.6 11 2.575 2.1 0.2 3.9 3.3 2 µA V V mA V V V µA 3/14 TSM114 Electrical Characteristics Symbol Idtrm Vtrmol Vtrmoh Vintrm DIotrm Parameter Current discharge of TRem Low output voltage Clamp voltage Input voltage Current source drift in temperature Test Condition Min 2 3.3 -0.3 Typ 5 3.6 Max 0.2 3.9 3.3 2 Unit mA V V V µA Tmin. < Tamb < Tmax Power Good (PG) Ipgol Vpgol Tpgr Tpg Iotpg THtpg TLtpg Idtpg Vtpgol Vtpgoh Vintpg DIotpg Fault Ifltol Vfltol Rcrnt VRcrn Output voltage 1.93 2.02 2.11 V IFault sink current Low output voltage VolFault=0.2V IsinkFault=10mA 10 0.2 mA V Current source High threshold Low threshold Current discharge Low output voltage Clamp voltage Input voltage Current source drift in temperature From low to high From high to low 9 2.425 1.9 2 3.3 -0.3 Tmin. < Tamb < Tmax 10 2.50 2 5 3.6 11 2.575 2.1 0.2 3.9 3.3 2 µA V V mA V V V µA Sink current Low output voltage Rise time PG VolPg=0.2V Isink=10mA Rpg=1K 10 0.2 500 mA V nS 1) DisVs33 disable voltage shall be between 4V and Vcc. When using DisVs33 disable function, connected to Vcc is better. 4/14 Electrical Characteristics Figure 1: Application Schematic 12V 5V 3.3V -12V TSM114 12V Primary Rectification Main Converter 5V 3.3V -12V PWM+Opto. Vref Vcc Auxiliary Converter Vcc 5Vstby 5Vstby PWM+Opto. Vref PG FAULT - Over & Under voltage protection - Voltage reference - Logic - Sequencer TSM114 Rem Figure 2: Internal Schematic Vcc Vs12 Vs5 Vs3.3 Vs-12 Bsense UVP OVP TSM114 Fault Logic Secondary HouseKeeping PG UV Blanking Rem Gnd Tuv Cuv Rcrnt Rcrnt Trem Crem Tpg Cpg 5/14 TSM114 Figure 3: Detailed Internal Schematic Electrical Characteristics Vs12 Rem 5 2V 10 Vs5 9 Vs3.3 12 Vs-12 11 Vcc 14 Vref = 2.5V Vref 1.2V 3.6V 10µA Tuv 7 CTuv 5mA DisVs3.3=3.3V DisVs-12=2V 2.5V Vref 2V UVP +rails 1.125 UVP -rails 1.475 OVP +Rails OVP -Rails 3.6V 10µA Trem 6 CTrem 5mA 2.5V Disable UVP-OVP Vref 2V 3.6V 10µA Tpg 4 CTpg 5mA 2.5V OV+UV TDelay 1 Fault S R Q !Q 3 Pg Vref 2V 3.6V 250µA Iref Vcc 13 Rcrnt Bsense 8 2.5V Vref 6/14 Electrical Characteristics Figure 4: Rem On/Off Vcc TSM114 Figure 5: OVP Function Rem On/Off, Tuv start up Vcc V5 Gnd V-5 Bsense V5 Gnd V-5 Bsense OVP level UVP level Rem TLrm THrm THrm TLrm Rem Tuv Tuv Tpg THtpg TLtpg TLtpg THtpg Tpg Trem TLrm THrm TLtrm Trem Fault Fault PG PG Tpg Tuv Trem Tdelay Tuv 7/14 TSM114 Figure 6: OVP function, Rem On/Off, Tuv start up Vcc Electrical Characteristics Figure 7: Vcc turn On/off, Bsense Vcc V5 Gnd V-5 Bsense OVP level UVP level V5 UVP level Gnd V-5 Bsense THrm TLrm Rem Tuv Rem Tuv Tpg TLtpg Tpg TLtrm Trem Trem tdelay tdelay Fault PG Fault PG Tuv 8/14 Electrical Characteristics Figure 8: Vcc turn on, OVP function, Remote On/Off TSM114 Vcc Vcc V5 UVP level OVP level UVP level V5 Gnd V-5 Bsense Gnd V-5 Bsense THrm TLrm Rem Rem Tuv Tuv TLtpg Tpg Tpg TLtrm Trem Trem tdelay Fault Fault PG PG 9/14 TSM114 Figure 9: Vcc turn On, AC line reduce/resume Bsense Electrical Characteristics Vcc Vcc V5 UVP level UVP level V5 Gnd V-5 Bsense Gnd V-5 Bsense Rem Rem Tuv Tuv Tpg Tpg Trem Trem Fault Fault PG PG 10/14 Electrical Characteristics Table 5: Truth table for OVP and UVP detection Vs12 Uv