TPS2231PWPR

TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 ExpressCard™ POWER INTERFACE SWITCH • FEATURES • • • • • • • Meets the ExpressCard™ Standard (ExpressCard|34 or ExpressCard|54) Compliant with the ExpressCard™ Compliance Checklists Fully Satisfies the ExpressCard™ Implementation Guidelines Supports Systems with WAKE Function TTL-Logic Compatible Inputs Short Circuit and Thermal Protection –40°C to 85°C Ambient Operating Temperature Range • Available in a 20-pin TSSOP or 24-pin PowerPAD™ HTSSOP (Single) Available in a 32-pin PowerPAD™ HTSSOP (Dual) APPLICATIONS • • • • • Notebook Computers Desktop Computers Personal Digital Assistants (PDAs) Digital Cameras TV and Set Top Boxes DESCRIPTION The TPS2231 and TPS2236 ExpressCard power interface switches provide the total power management solution required by the ExpressCard specification. The TPS2231 and TPS2236 ExpressCard power interface switches distribute 3.3 V, AUX, and 1.5 V to the ExpressCard socket. Each voltage rail is protected with integrated current-limiting circuitry. The TPS2231 supports systems with single-slot ExpressCard|34 or ExpressCard|54 sockets. The TPS2236 supports systems with dual-slot ExpressCard sockets. End equipment for the TPS2231 and TPS2236 include notebook computers, desktop computers, personal digital assistants (PDAs), and digital cameras. Host Power Source 3.3VIN 3.3VOUT 1.5VIN 1.5VOUT TPS2231 SHDN STBY Host Chip Set/Lock Circuits SYSRST PERST CPPE CPUSB ExpressCard Connector AUXOUT Host Connector AUXIN Express Card OC GND RCLKEN REFCLK+ REFCLK- Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. ExpressCard is a trademark of Personal Computer Memory Card International Association. PowerPAD is a trademark of Texas Instruments. UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2004, Texas Instruments Incorporated TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. AVAILABLE OPTIONS TA Single –40°C to 85°C (1) (2) PACKAGED DEVICES (1) NUMBER OF CHANNELS TSSOP PowerPAD HTSSOP TPS2231PW (2) TPS2231PWP Dual TPS2236DAP The package is available taped and reeled. Add an R suffix to device types (e.g., TPS2231PWPR). Product preview stage of development ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) Input voltage range for card power VI TPS223x UNIT VI(3.3VIN) –0.3 to 6 V VI(1.5VIN) –0.3 to 6 V VI(AUXIN) –0.3 to 6 V Logic input/output voltage VO Output voltage range –0.3 to 6 V VO(3.3VOUT) –0.3 to 6 V VO(1.5VOUT) –0.3 to 6 V –0.3 to 6 V VO(AUXOUT) Continuous total power dissipation IO Output current See Dissipation Rating Table IO(3.3VOUT) Internally limited IO(AUXOUT) Internally limited IO(1.5VOUT) Internally limited OC sink current 10 mA PERST sink/source current 10 mA TJ Operating virtual junction temperature range –40 to 120 °C Tstg Storage temperature range –55 to 150 °C 260 °C 2 kV 1.5 kV 500 V Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds TPS2231 ESD Electrostatic discharge protection Human body model (HBM) MIL-STD-883C TPS2236, all pins except PERSTx and OCx TPS2236, PERSTx and OCx Charge device model (CDM) (1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATINGS (Thermal Resistance = °C/W) (1) 2 PACKAGE (1) TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING PW (20) 704.2 mW 7.41 mW/°C 370.6 mW 259.5 mW PWP (24) 3153 mW 33.19 mW/°C 1659.5 mW 1161.6 mW DAP (32) PowerPAD not soldered down 993.4 mW 10.46 mW/°C 522.8 mW 366 mW DAP (32) 4040.8 mW 42.55 mW/°C 2126.8 mW 1488.7 mW These devices are mounted on an JEDEC low-k board (2-oz. traces on surface), (The table is assuming that the maximum junction temperature is 120°C). The power pad on the device must be soldered down to the power pad on the board if best thermal performance is needed. TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 RECOMMENDED OPERATING CONDITIONS VI(3.3VIN) VI(1.5VIN) Input voltage VI(AUXIN) MIN MAX 3.3VIN is only required for its respective functions 3 3.6 1.5VIN is only required for its respective functions 1.35 1.65 3 3.6 AUXIN is required for all circuit operations IO(3.3VOUT) IO(1.5VOUT) Continuous output current TJ = 120°C IO(AUXOUT) TJ Operating virtual junction temperature UNIT V 0 1.3 A 0 650 mA 0 275 mA –40 120 °C ELECTRICAL CHARACTERISTICS TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V, VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SWITCH Power switch resistance R(DIS_FET) IOS 3.3VIN to 3.3VOUT with two switches on for dual TJ = 25°C, I = 1300 mA each 1.5VIN to 1.5VOUT With two switches on for dual TJ = 25°C, I = 650 mA each AUXIN to AUXOUT with two switches on for dual TJ = 25°C, I = 275 mA each Discharge resistance on 3.3V/1.5V/AUX outputs Short-circuit output current (1) IOS(3.3VOUT) (steady-state value) IOS(1.5VOUT) (steady-state value) TJ = 100°C, I = 1300 mA each Thermal shutdown VI(/SHDNx) = 0 V, I(discharge) = 1 mA Normal operation of TPS2231 100 TJ (–40, 120°C]. Output powered into a short 2 mΩ mΩ 500 Ω 2.5 A 0.67 1 1.3 A 275 450 600 mA Rising temperature, not in overcurrent condition 155 165 Overcurrent condition 120 130 °C VO(3.3VOUT) with 100-mΩ short 43 100 VO(1.5VOUT) with 100-mΩ short, TPS2231 100 140 VO(1.5VOUT) with 100-mΩ short, TPS2236 110 150 µs 38 100 125 200 II(3.3VIN) 17.5 25 II(AUXIN) II(3.3VIN) II(1.5VIN) (1) 200 II(AUXIN) II(1.5VIN) Operation input quiescent current 120 1.35 VO(AUXOUT) with 100-mΩ short II 70 mΩ 10 From short to the 1st threshold within 1.1 times of final current limit, TJ = 25°C Normal operation of TPS2236 46 TJ = 100°C, I = 275 mA each Hysteresis Current-limit response time 68 TJ = 100°C, I = 650 mA each IOS(AUXOUT)(steady-state value) Trip point, TJ 45 Outputs are unloaded, TJ [–40, 120°C] (does not include CPPEx and CPUSBx logic pullup currents) 5.5 15 85 150 10 15 2.5 10 µA µA Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately. 3 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 ELECTRICAL CHARACTERISTICS (continued) TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V, VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted) PARAMETER Normal operation of TPS2236 TEST CONDITIONS II(3.3VIN) II(1.5VIN) Normal operation of TPS2231 II Total input quiescent current MIN II(AUXIN) II(AUXIN) Outputs are unloaded, TJ[–40, 120°C] (include CPPEx and CPUSBx logic pullup currents) II(3.3VIN) Ilkg(RVS) II(1.5VOUT) 15 210 10 15 10 3.5 20 II(3.3VIN) II(AUXIN) Reverse leakage current (TPS2236 II(3.3VOUT) and TPS2231) 5.5 120 440 II(1.5VIN) II(AUXOUT) 25 2.5 CPUSB = CPPE = 0 V SHDN = 0 V (discharge FETs are on) (include CPPEx and CPUSBx logic pullup currents and SHDN pullup current) TJ [–40, 120°C] II(AUXIN) TPS2231 17.5 250 Shutdown mode of II(3.3VIN) TPS2231 II(1.5VIN) Forward leakage current 320 II(AUXIN) II(AUXIN) Ilkg(FWD) MAX 200 II(1.5VIN) Shutdown mode of II(3.3VIN) TPS2236 II(1.5VIN) TPS2236 TYP SHDN = 3.3 V, CPUSB = CPPE = 3.3 V (no card present, discharge FETs are on); current measured at input pins TJ = 120°C, includes RCLKEN pullup current 0.1 20 144 270 3.5 10 0.5 10 40 100 0.1 100 0.1 100 20 50 0.1 50 II(1.5VIN) 0.1 50 TJ = 25°C 0.1 10 II(3.3VIN) TJ = 120°C TJ = 25°C TJ = 120°C TJ = 25°C 50 VO(AUXOUT) = VO(3.3VOUT)= 3.3 V; VO(1.5VOUT) = 1.5 V; All voltage inputs are grounded (current measured from output pins going in) 0.1 10 50 0.1 TJ = 120°C 10 50 UNIT µA µA µA µA µA µA µA µA µA LOGIC SECTION (SYSRST, SHDNx, STBYx, PERSTx, RCLKENx, OCx, CPUSBx, CPPEx) Logic input supply current Logic input voltage I(/SYSRST) Input I(/SHDNx) Input I(/STBYx) Input I(RCLKENx) Input I(/CPUSBx) or I(/CPPEx) Inputs SYSRST = 0 V, sourcing 0 10 SHDNx = 3.6 V, sinking SHDNx = 0 V, sourcing 1 30 0 10 STBYx = 3.6 V, sinking 1 30 0 1 STBYx = 0 V, sourcing 10 30 RCLKENx = 0 V, sourcing 10 30 CPUSB or CPPE = 0 V, sinking CPUSB or CPPE = 3.6 V, sourcing High level 0 10 1 30 2 Low level RCLEN output low voltage 0.8 Output PERST assertion threshold of output voltage (PERST asserted when any output voltage falls below the threshold) 4 SYSRST = 3.6 V, sinking IO(RCLKEN) = 60 µA 0.4 3.3VOUT falling 2.7 AUXOUT falling 2.7 3 1.5VOUT falling 1.2 1.35 PERST assertion delay from output voltage 3.3VOUT, AUXOUT, or 1.5VOUT falling PERST de-assertion delay from output voltage 3.3VOUT, AUXOUT, and 1.5VOUT rising within tolerance PERST assertion delay from SYSRST Max time from SYSRST asserted or de-asserted 4 µA µA µA µA µA V V 3 10 V 500 ns 20 ms 500 ns TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 ELECTRICAL CHARACTERISTICS (continued) TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V, VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted) PARAMETER tW(PERST) PERST minimum pulse width PERST output low voltage PERST output high voltage TEST CONDITIONS MIN TYP 3.3VOUT, AUXOUT, or 1.5VOUT falling out of tolerance or triggered by SYSRST 100 250 IO(PERST) = 500 µA OC output low voltage IO(/OC) = 2 mA OC leakage current VO(/OC) = 3.6 V OC deglitch Falling into or out of an overcurrent condition MAX UNIT µs 0.4 2.4 V V 0.4 V 1 µA 6 20 mS UNDERVOLTAGE LOCKOUT (UVLO) 3.3VIN UVLO 3.3VIN level, below which 3.3VIN and 1.5VIN switches are off 2.6 2.9 1.5VIN UVLO 1.5VIN level, below which 3.3VIN and 1.5VIN switches are off 1 1.25 AUXIN UVLO AUXIN level, below which all switches are off 2.6 2.9 UVLO hysteresis 100 V mV SWITCHING CHARACTERISTICS TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V, VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted) PARAMETER tr tf tf tpd(on) Output rise times Output fall times when card removed (both CPUSB and CPPE de-asserted) Output fall times when SHDN asserted (card is present) Turn-on propagation delay TEST CONDITIONS MIN TYP MAX 3.3VIN to 3.3VOUT CL(3.3VOUT) = 0.1 µF, IO(3.3VOUT) = 0 A 0.1 3 AUXIN to AUXOUT CL(AUXOUT) = 0.1 µF, IO(AUXOUT) = 0 A 0.1 3 1.5VIN to 1.5VOUT CL(1.5VOUT) = 0.1 µF, IO(1.5VOUT) = 0 A 0.1 3 3.3VIN to 3.3VOUT CL(3.3VOUT) = 100 µF, RL = VI(3.3VIN)/1 A 0.1 6 AUXIN to AUXOUT CL(AUXOUT) = 100 µF, RL = VI(AUXIN)/0.250 A 0.1 6 1.5VIN to 1.5VOUT CL(1.5VOUT) = 100 µF, RL = VI(1.5VIN)/0.500 A 0.1 6 3.3VIN to 3.3VOUT CL(3.3VOUT) = 0.1 µF, IO(3.3VOUT) = 0 A 10 150 AUXIN to VAUXOUT CL(AUXOUT) = 0.1 µF, IO(AUXOUT) = 0 A 10 150 1.5VIN to 1.5VOUT CL(1.5VOUT) = 0.1 µF, IO(1.5VOUT) = 0 A 10 150 3.3VIN to 3.3VOUT CL(3.3VOUT) = 20 µF, IO(3.3VOUT) = 0 A 2 30 AUXIN to VAUXOUT CL(AUXOUT) = 20 µF, IO(AUXOUT) = 0 A 2 30 1.5VIN to 1.5VOUT CL(1.5VOUT) = 20 µF, IO(1.5VOUT) = 0 A 2 30 3.3VIN to 3.3VOUT CL(3.3VOUT) = 0.1 µF, IO(3.3VOUT) = 0 A 10 150 AUXIN to VAUXOUT CL(AUXOUT) = 0.1 µF, IO(AUXOUT) = 0 A 10 150 1.5VIN to 1.5VOUT CL(1.5VOUT) = 0.1 µF, IO(1.5VOUT) = 0 A 10 150 3.3VIN to 3.3VOUT CL(3.3VOUT) = 100 µF, RL = VI(3.3VIN)/1 A 0.1 5 AUXIN to VAUXOUT CL(AUXOUT) = 100 µF RL = VI(AUXIN)/0.250 A 0.1 5 1.5VIN to 1.5VOUT CL(1.5VOUT) = 100 µF, RL = VI(1.5VIN)/0.500 A 0.1 5 3.3VIN to 3.3VOUT CL(3.3VOUT) = 0.1 µF, IO(3.3VOUT) = 0 A 0.1 1 AUXIN to VAUXOUT CL(AUXOUT) = 0.1 µF, IO(AUXOUT) = 0A 0.05 0.5 1.5VIN to 1.5VOUT CL(1.5VOUT) = 0.1 µF, IO(1.5VOUT) = 0 A 0.1 1 3.3VIN to 3.3VOUT CL(3.3VOUT) = 100 µF, RL = VI(3.3VIN)/1 A 0.1 1.5 AUXIN to VAUXOUT CL(AUXOUT) = 100 µF, RL = VI(AUXIN)/0.250 A 0.05 1 1.5VIN to 1.5VOUT CL(1.5VOUT) = 100 µF, RL = VI(1.5VIN)/0.500 A 0.1 1.5 UNIT ms µs ms µs ms ms 5 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 SWITCHING CHARACTERISTICS (continued) TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V, VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted) PARAMETER tpd(off) Turn-off propagation delay TEST CONDITIONS MIN TYP MAX 3.3VIN to 3.3VOUT CL(3.3VOUT) = 0.1 µF, IO(3.3VOUT) = 0 A 0.1 1.5 AUXIN to VAUXOUT CL(AUXOUT) = 0.1 µF, IO(AUXOUT) = 0 A 0.05 0.5 1.5VIN to 1.5VOUT CL(1.5VOUT) = 0.1 µF, IO(1.5VOUT) = 0 A 0.1 1.5 3.3VIN to 3.3VOUT CL(3.3VOUT) = 100 µF, RL = VI(3.3VIN)/1 A 0.1 1.5 AUXIN to VAUXOUT CL(AUXOUT) = 100 µF, RL = VI(AUXIN)/0.250 A 0.05 0.5 1.5VIN to 1.5VOUT CL(1.5VOUT) = 100 µF, RL = VI(1.5VIN)/0.500 A 0.1 1 PIN ASSIGNMENTS TPS2231 PW PACKAGE (TOP VIEW) SYSRST SHDN STBY 3.3VIN 3.3VIN 3.3VOUT 3.3VOUT PERST NC GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 TPS2231 PWP PACKAGE (TOP VIEW) OC RCLKEN AUXIN AUXOUT 1.5VIN 1.5VIN 1.5VOUT 1.5VOUT CPPE CPUSB NC SYSRST SHDN STBY 3.3VIN 3.3VIN 3.3VOUT 3.3VOUT PERST NC GND NC 1 2 3 4 5 6 7 8 9 10 11 12 TPS2236 DAP PACKAGE (TOP VIEW) CPPE1 CPPE2 CPUSB1 NC NC CPUSB2 3.3VOUT1 3.3VIN 3.3VIN 3.3VOUT2 PERST2 NC PERST1 AUXOUT1 AUXIN AUXOUT2 NC − No internal connection 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 RCLKEN1 RCLKEN2 SYSRST NC STBY1 STBY2 1.5VOUT1 1.5VIN 1.5VIN 1.5VOUT2 NC GND OC2 OC1 SHDN2 SHDN1 24 23 22 21 20 19 18 17 16 15 14 13 NC OC RCLKEN AUXIN AUXOUT 1.5VIN 1.5VIN 1.5VOUT 1.5VOUT CPPE CPUSB NC UNIT ms TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 TERMINAL FUNCTIONS TERMINAL TPS2231 NAME TPS2236 NO. NAME NO. I/O DESCRIPTION PW PWP 3.3VIN 4, 5 5, 6 3.3VIN DAP 8, 9 I 3.3-V input for 3.3VOUT 1.5VIN 15, 16 18, 19 1.5VIN 24, 25 I 1.5-V input for 1.5VOUT AUXIN 18 21 AUXIN 15 I AUX input for AUXOUT and chip power GND 10 11 GND 21 3.3VOUT 6, 7 7, 8 3.3VOUT1 7 O Ground Switched output that delivers 0 V, 3.3 V or high impedance to card 1.5VOUT 13, 14 16, 17 1.5VOUT1 26 O Switched output that delivers 0 V, 1.5 V or high impedance to card AUXOUT 17 20 AUXOUT1 14 O Switched output that delivers 0 V, AUX or high impedance to card 3.3VOUT2 10 O Switched output that delivers 0 V, 3.3 V or high impedance to card 1.5VOUT2 23 O Switched output that delivers 0 V, 1.5 V or high impedance to card AUXOUT2 16 O Switched output that delivers 0 V, AUX or high impedance to card SYSRST 1 2 SYSRST 30 I System Reset input – active low, logic level signal. Internally pulled up to AUXIN. CPPE 12 15 CPPE1 1 I Card Present input for PCI Express cards. Internally pulled up to AUXIN CPUSB 11 14 CPUSB1 3 I Card Present input for USB cards. Internally pulled up to AUXIN. CPPE2 2 I Card Present input for PCI Express cards. Internally pulled up to AUXIN. PERST SHDN STBY RCLKEN OC NC 8 2 3 19 20 9 9 3 4 22 23 1, 10, 12, 13, 24 CPUSB2 6 I Card Present input for USB cards. Internally pulled up to AUXIN. PERST1 13 O A logic level power good to slot 0 (with delay) PERST2 11 O A logic level power good to slot 1 (with delay) SHDN1 17 I Shutdown input – active low, logic level signal. Internally pulled up to AUXIN. SHDN2 18 I Shutdown input – active low, logic level signal. Internally pulled up to AUXIN. STBY1 28 I Standby input – active low, logic level signal. Internally pulled up to AUXIN. STBY2 27 I Standby input – active low, logic level signal. Internally pulled up to AUXIN. RCLKEN1 32 I/O Reference Clock Enable signal. As an output, a logic level power good to host for slot 0 (no delay – open drain). As an input, if kept inactive (low) by the host, prevents PERST from being de-asserted. Internally pulled up to AUXIN. RCLKEN2 31 I/O Reference Clock Enable signal. As an output, a logic level power good to host for slot 1 (no delay – open drain). As an input, if kept inactive (low) by the host, prevents PERST from being de-asserted. Internally pulled up to AUXIN. OC1 19 O Overcurrent status output for slot 0 (open drain) OC2 20 O Overcurrent status output for slot 1 (open drain) NC 4, 5, 12, 22, 29 No connection 7 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 FUNCTIONAL BLOCK DIAGRAM Single ExpressCard Power Switch 3.3VIN PG S1 (Note A) AUXIN 3.3VOUT CS (Note B) PG S4 CS AUXOUT S2 S5 1.5VIN PG 1.5VOUT CS S3 S6 Current Limit CPUSB Thermal Limit CPPE OC STBY SHDN UVLO POR GND FAULT PWR_GOOD_ALL Control Logic AUXIN Delay RCLKEN AUXIN PERST SYSRST Note A: PG = power good Note B: CS = current sense 8 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 FUNCTIONAL BLOCK DIAGRAM (continued) Dual ExpressCard Power Switch 3.3VIN S1 PG1 CS 3.3VOUT1 S4 PG1 AUXIN CS AUXOUT1 S2 S5 1.5VIN S3 PG1 1.5 VOUT1 CS S6 PG2 CS 3.3VOUT2 S7 S10 PG2 CS AUXOUT2 S8 S11 PG2 CS 1.5VOUT2 S9 S12 Current Limit CPUSB1 Thermal Limit CPPE1 OC1 PWR_GOOD_ALL_1 CHANNEL-1 FAULT STBY1 Control Logic PWR_GOOD_ALL_2 SHDN1 CPUSB2 CPPE2 AUXIN Delay RCLKEN1 PERST1 SYSRST Delay RCLKEN2 STBY2 PERST2 UVLO SHDN2 GND POR CHANNEL-2 FAULT OC2 9 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 DETAILED PIN DESCRIPTIONS CPPE A logic low level on this input indicates that the card present supports PCI Express functions. CPPE connects to the AUXIN input through an internal pullup. When a card is inserted, CPPE is physically connected to ground if the card supports PCI Express functions. CPUSB A logic low level on this input indicates that the card present supports USB functions. CPUSB connects to the AUXIN input through an internal pullup. When a card is inserted, CPUSB is physically connected to ground if the card supports USB functions. SHDN When asserted (logic low), this input instructs the power switch to turn off all voltage outputs and the discharge FETs are activated. SHDN has an internal pullup connected to AUXIN. STBY When asserted (logic low) after the card is inserted, this input places the power switch in standby mode by turning off the 3.3-V and 1.5-V power switches and keeping the AUX switch on. If asserted prior to the card being present, STBY places the power switch in OFF Mode by turning off the AUX, 3.3-V, and 1.5-V power switches. STBY has an internal pullup connected to AUXIN. RCLKEN This pin serves as both an input and an output. On power up, a discharge FET keeps this signal at a low state as long as any of the output power rails are out of their tolerance range. Once all output power rails are within tolerance, the switch releases RCLKEN allowing it to transition to a high state (internally pulled up to AUXIN). The transition of RCLKEN from a low to a high state starts an internal timer for the purpose of deasserting PERST. As an input, RCLKEN can be kept low to delay the start of the PERST internal timer. Because RCLKEN is internally connected to a discharge FET, this pin can only be driven low and should never be driven high as a logic input. When an external circuit drives this pin low, RCLKEN becomes an input; otherwise, this pin is an output. RCLKEN can be used by the host system to enable a clock driver. PERST On power up, this output remains asserted (logic level low) until all power rails are within tolerance. Once all power rails are within tolerance and RCLKEN has been released (logic high), PERST is deasserted (logic high) after a time delay as shown in the parametric table. On power down, this output is asserted whenever any of the power rails drop below their voltage tolerance. The PERST signal is an output from the host system and an input to the ExpressCard module. This signal is only used by PCI Express-based modules and its function is to place the ExpressCard module in a reset state. During power up, power down, or whenever power to the ExpressCard module is not stable or not within voltage tolerance limits, the ExpressCard standard requires that PERST be asserted. As a result, this signal also serves as a power-good indicator to the ExpressCard module, and the relationship between the power rails and PERST are explicitly defined in the ExpressCard standard. The host can also place the ExpressCard module in a reset state by asserting a system reset SYSRST. This system reset generates a PERST to the ExpressCard module without disrupting the voltage rails. This is what is normally called a warm reset. However, in a cold start situation, the system reset can also be used to extend the length of time that PERST is asserted. 10 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 Detailed Pin Descriptions (continued) SYSRST This input is driven by the host system and directly affects PERST. Asserting SYSRST (logic low) forces PERST to assert. RCLKEN is not affected by the assertion of SYSRST. SYSRST has an internal pullup connected to AUXIN. OC This pin is an open-drain output. When any of the three power switches (AUX, 3.3V, and 1.5V) is in an overcurrent condition, OC is asserted (logic low) by an internal discharge FET with a deglitch delay. Otherwise, the discharge FET is open, and the pin can be pulled up to a power supply through an external resistor. FUNCTIONAL TRUTH TABLES Truth Table for Voltage Outputs VOLTAGE INPUTS (1) AUXIN 3.3VIN 1.5VIN SHDN STBY Off x x x x On x x 0 On x x 1 On On On On On On (1) (2) (3) (4) VOLTAGE OUTPUTS (2) LOGIC INPUTS CP (4) MODE (3) AUXOUT 3.3VOUT 1.5VOUT x Off Off Off OFF x x GND GND GND Shutdown x 1 GND GND GND No Card 1 0 0 On Off Off Standby 1 1 0 On On On Card Inserted For input voltages, On means the respective input voltage is higher than its turnon threshold voltage; otherwise, the voltage is Off (for AUX input,Off means the voltage is close to zero volt). For output voltages, On means the respective power switch is turned on so the input voltage is connected to the output; Off means the power switch and its output discharge FET are both off; GND means the power switch is off but the output discharge FET is on so the voltage on the output is pulled down to 0 V. Mode assigns each set of input conditions and respective output voltage results to a different name. These modes are referred to as input conditions in the following Truth Table for Logic Outputs. CP = CPUSB and CPPE– equal to 1 when both CPUSB and CPPE signals are logic high, or equal to 0 when either CPUSB or CPPE is low. Truth Table for Logic Outputs INPUT CONDITIONS MODE LOGIC OUTPUTS SYSRST RCLKEN (1) PERST RCLKEN (2) X X 0 0 0 Hi-Z 0 1 0 0 0 0 1 Hi-Z 1 1 1 0 0 0 OFF Shutdown No Card Standby Card Inserted (1) (2) RCLKEN as a logic input in this column. RCLKEN is an I/O pin and it can be driven low externally, left open, or connected to high-impedance terminals, such as the gate of a MOSFET. It must not be driven high externally. RCLKEN as a logic output in this column. 11 TPS2231 TPS2236 SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 www.ti.com POWER STATES If AUXIN is not present, then all input-to-output power switches are kept off (OFF mode). If AUXIN is present and SHDN is asserted (logic low), then all input-to-output power switches are kept off and the output discharge FETs are turned on (Shutdown mode). If SHDN is asserted and then de-asserted, the state on the outputs is restored to the state prior to SHDN assertion. If 3.3VIN, AUXIN and 1.5VIN are present at the input of the power switch and no card is inserted, then all input-to-output power switches are kept off and the output discharge FETs are turned on (No Card mode). If 3.3VIN, AUXIN and 1.5VIN are present at the input of the power switch prior to a card being inserted, then all input-to-output power switches are turned on once a card-present signal (CPUSB and/or CPPE) is detected (Card Inserted mode). If a card is present and all output voltages are being applied, then the STBY is asserted (logic low); the AUXOUT voltage is provided to the card, and the 3.3VOUT and 1.5VOUT switches are turned off (Standby mode). If a card is present and all output voltages are being applied, then the 1.5VIN, or 3.3VIN is removed from the input of the power switch; the AUXOUT voltage is provided to the card and the 3.3VOUT and 1.5VOUT switches are turned off (Standby mode). If prior to the insertion of a card, the AUXIN is available at the input of the power switch and 3.3VIN and/or 1.5VIN are not, or if STBY is asserted (logic low), then no power is made available to the card (OFF mode). If 1.5VIN and 3.3VIN are made available at the input of the power switch after the card is inserted and STBY is not asserted, all the output voltages are made available to the card (Card Inserted mode). DISCHARGE FETs The discharge FETs on the outputs are activated whenever the device detects that a card is not present (No Card mode). Activation occurs after the input-to-output power switches are turned off (break before make). The discharge FETs de-activate if either of the card-present lines go active low, unless the SHDN pin is asserted. The discharge FETs are also activated whenever the SHDN input is asserted and stay asserted until SHDN is de-asserted. 12 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 PARAMETER MEASUREMENT INFORMATION VIN IO(3.3VOUT/AUXOUT) RL CL VIN IO(1.5VOUT) RL CL LOAD CIRCUIT LOAD CIRCUIT VOLTAGE WAVEFORMS VIN VI(3.3V/AUXIN) 50% VIN VI(1.5V) 50% GND GND tpd(off) tpd(on) VO(3.3VOUT/AUXOUT) tpd(off) tpd(on) VI(3.3V) 90% 10% 90% 10% VO(1.5VOUT) GND VI(3.3V) 50% tf tr VI(3.3V) Rise/Fall Time (3.3VOUT/AUXOUT) VIN GND Propagation Delay (1.5VOUT) tf tr VO(3.3VOUT/AUXOUT) 10% GND Propagation Delay (3.3VOUT/AUXOUT) VI(1.5V) 90% VO(1.5VOUT) 90% 10% VI(1.5V) GND Rise/Fall Time (1.5VOUT) VIN VI(1.5V) 50% GND GND toff toff ton VO(3.3VOUT/AUXOUT) ton VI(3.3V) 90% 10% VO(1.5VOUT) GND Turn On/Off Time (3.3VOUT/AUXOUT) VI(1.5V) 90% 10% GND Turn On/Off Time (1.5VOUT) Figure 1. Test Circuits and Voltage Waveforms 13 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS Table of Graphs FIGURE Output voltage when card is inserted vs Time 2 RCLKEN and PERST voltage during power up vs Time 3 RCLKEN and PERST voltage during power down vs Time 4 PERST asserted by SYSRST when power is on vs Time 5 PERST de-asserted by SYSRST when power is on vs Time 6 Output voltage when 3.3VIN is removed vs Time 7 Output voltage when 1.5VIN is removed vs Time 8 OC response when powered into a short (3.3VOUT) vs Time 9 Supply current of AUXIN vs Junction temperature 10 Static drain-source on-state resistance vs Junction temperature 11 3.3-V power switch current limit vs Junction temperature 12 1.5-V power switch current limit vs Junction temperature 13 AUX power switch current limit vs Junction temperature 14 3.3-V power switch current limit trip vs Junction temperature 15 1.5-V power switch current limit trip vs Junction temperature 16 AUX power switch current limit trip vs Junction temperature 17 OUTPUT VOLTAGE WHEN CARD IS INSERTED vs TIME RCLKEN AND PERST VOLTAGE DURING POWER UP vs TIME VI(CPxx) 2 V/div VO(3.3VOUT) 2 V/div VO(3.3VOUT) 2 V/div 2 V/div VO(RCLKEN) 2 V/div VO(AUXOUT) 2 V/div VO(PERST) 2 V/div VO(1.5VOUT) t − Time − 1 ms/div Figure 2. 14 t − Time − 5 ms/div Figure 3. TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 RCLKEN AND PERST VOLTAGE DURING POWER DOWN vs TIME PERST ASSERTED BY SYSRST WHEN POWER IS ON vs TIME VO(AUXOUT) 2 V/div VI(SYSRST) 2 V/div VO(RCLKEN) 2 V/div VO(PERST) 2 V/div VO(PERST) 2 V/div t − Time − 1 ms/div t − Time − 500 ns/div Figure 4. Figure 5. PERST DE-ASSERTED BY SYSRST WHEN POWER IS ON vs TIME OUTPUT VOLTAGE WHEN 3.3VIN IS REMOVED vs TIME VI(3.3VIN) 2 V/div VI(SYSRST) 2 V/div VO(3.3VOUT) 2 V/div VO(1.5VOUT) 2 V/div VO(PERST) 2 V/div VO(AUXOUT) 2 V/div RL(3.3VOUT) = 3.6
RL(1.5VOUT) = 2.7
RL(AUXOUT) = 12
CL(3.3V/1.5V/AUXOUT) = 68 F t − Time − 100
s/div Figure 6. t − Time − 500 s/div Figure 7. 15 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 OC RESPONSE WHEN POWERED INTO A SHORT (3.3VOUT) vs TIME OUTPUT VOLTAGE WHEN 1.5VIN IS REMOVED vs TIME VI(1.5VIN) 2 V/div VO(OC) 2 V/div VO(3.3VOUT) 2 V/div VO(1.5VOUT) 2 V/div RL(3.3VOUT) = 3.6
RL(1.5VOUT) = 2.7
VO(AUXVOUT) 2 V/div IO(3.3VOUT) 0.5 A/div RL(AUXOUT) = 12
CL(3.3V/1.5V/AUXOUT) = 68 F t − Time − 500 s/div t − Time − 5 ms/div Figure 8. Figure 9. SUPPLY CURRENT OF AUXIN vs JUNCTION TEMPERATURE STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE 180 250 AUXIN + CPxx 150 AUXIN 50 On−State Resistance − m Ω rDS(on) − Static Drain-Source ICC − Supply Current − µ A 200 100 140 120 100 80 40 20 −20 0 20 40 60 80 100 120 1.5VIN 60 0 −40 0 −40 3.3V_AUX 160 AUXIN + CPxx + SHDN+ RCLKEN 3.3VIN −20 0 20 40 60 80 100 TJ − Junction Temperature − C TJ − Junction Temperature − C Figure 10. 16 Figure 11. 120 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 3.3-V POWER SWITCH CURRENT LIMIT vs JUNCTION TEMPERATURE 1.5-V POWER SWITCH CURRENT LIMIT vs JUNCTION TEMPERATURE 2.10 1000 990 980 Current Limit − mA Current Limit − A 2.05 2 970 960 950 940 930 1.95 920 910 1.90 −40 −20 0 20 40 60 80 100 900 −40 120 −20 TJ − Junction Temperature − C 0 20 40 60 80 100 120 TJ − Junction Temperature − C Figure 12. Figure 13. AUX POWER SWITCH CURRENT LIMIT vs JUNCTION TEMPERATURE 3.3-V POWER SWITCH CURRENT LIMIT TRIP vs JUNCTION TEMPERATURE 500 3.20 490 3.10 Current Limit Trip Threshold − A 480 Current Limit − mA 470 460 450 440 430 420 410 3 2.90 2.80 2.70 2.60 400 390 −40 −20 0 20 40 60 80 100 TJ − Junction Temperature − C Figure 14. 120 2.50 −40 −20 0 20 40 60 80 100 120 TJ − Junction Temperature − C Figure 15. 17 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 1.5-V POWER SWITCH CURRENT LIMIT TRIP vs JUNCTION TEMPERATURE AUX POWER SWITCH CURRENT LIMIT TRIP vs JUNCTION TEMPERATURE 800 2000 Current Limit Trip Threshold − mA Current Limit Trip Threshold − mA 1900 1800 1700 1600 1500 1400 1300 1200 760 720 680 640 1100 1000 −40 −20 0 20 40 60 80 100 TJ − Junction Temperature − C Figure 16. 18 120 600 −40 −20 0 20 40 60 80 TJ − Junction Temperature − C Figure 17. 100 120 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 APPLICATION INFORMATION INTRODUCTION TO ExpressCard An ExpressCard module is an add-in card with a serial interface based on PCI Express and/or Universal Serial Bus (USB) technologies. An ExpressCard comes in two form factors defined as ExpressCard|34 or ExpressCard|54. The difference, as defined by the name, is the width of the module, 34 mm or 54 mm, respectively. Host systems supporting the ExpressCard module can support either the ExpressCard|34 or ExpressCard|54 or both. ExpressCard POWER REQUIREMENTS Regardless of which ExpressCard module is used, the power requirements as defined in the ExpressCard Standard apply to both on an individual slot basis. The host system is required to supply 3.3 V, 1.5 V, and AUX to each of the ExpressCard slots. However, the voltage is only applied after an ExpressCard is inserted into the slot. The ExpressCard connector has two pins, CPPE and CPUSB, that are used to signal the host when a card is inserted. If the ExpressCard module itself connects the CPPE to ground, the logic low level on that signal indicates to the host that a card supporting PCI Express has been inserted. If CPUSB is connected to ground, then the ExpressCard module supports the USB interface. If both PCI Express and USB are supported by the ExpressCard module, then both signals, CPPE and CPUSB, must be connected to ground. In addition to the Card Present signals (CPPE and CPUSB), the host system determines when to apply power to the ExpressCard module based on the state of the system. The state of the system is defined by the state of the 3.3 V, 1.5 V, and AUX input voltage rails. For the sake of simplicity, the 3.3-V and 1.5-V rails are defined as the primary voltage rails as oppose to the auxiliary voltage rail, AUX. ExpressCard POWER SWITCH OPERATION The ExpressCard power switch resides on the host, and its main function is to control when to send power to the ExpressCard slot. The ExpressCard power switch makes decisions based on the Card Present inputs and on the state of the host system as defined by the primary and auxiliary voltage rails. The following conditions define the operation of the host power controller: 1. When both primary power and auxiliary power at the input of the ExpressCard power switch are off, then all power to the ExpressCard connector is off regardless of whether a card is present. 2. When both primary power and auxiliary power at the input of the ExpressCard power switch are on, then power is only applied to the ExpressCard after the ExpressCard power switch detects that a card is present. 3. When primary power (either +3.3 V or +1.5 V) at the input of the ExpressCard power switch is off and auxiliary power at the input of the ExpressCard power switch is on, then the ExpressCard power switch behaves in the following manner: a. If neither of the Card Present inputs is detected (no card inserted), then no power is applied to the ExpressCard slot. b. If the card is inserted after the system has entered this power state, then no power is applied to the ExpressCard slot. c. If the card is inserted prior to the removal of the primary power (either +3.3 V or +1.5 V or both) at the input of the ExpressCard power switch, then only the primary power (both +3.3 V and +1.5 V) is removed and the auxiliary power is sent to the ExpressCard slot. Figure 18 through Figure 23 illustrate the timing relationships between power/logic inputs and outputs of ExpressCard. 19 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 APPLICATION INFORMATION (continued) EXPRESS CARD TIMING DIAGRAMS Host Power (AUXIN, 3.3VIN, and 1.5VIN) SYSRST CPxx a Card Power (AUXIN, 3.3VOUT, and 1.5VOUT) RCLKEN b PERST Tpd REFCLK g c d e a b c d e f g Min Max System Dependent 100 System Dependent System Dependent 100 4 Units
s
s 20 ms 10 ms Max Units f Figure 18. Timing Signals - Card Present Before Host Power Is On Host Power (AUXIN, 3.3VIN, and 1.5VIN) SYSRST CPxx Card Power (AUXIN, 3.3VOUT, and 1.5VOUT) RCLKEN a PERST Tpd REFCLK b c d a b c d e Min 100 10 System Dependent System Dependent 20 4 e Figure 19. Timing Signals - Host Power Is On Prior to Card Insertion 20
s ms ms TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 APPLICATION INFORMATION (continued) Host Power (AUXIN) Host Power (3.3VIN and 1.5VIN) SYSRST CPxx Card Power (AUXIN, 3.3VOUT, and 1.5VOUT) RCLKEN PERST REFCLK (Either Tri-Stated or Off) Note: Once 3.3 V and 1.5 V are applied, the power switch follows the power-up sequence of Figure 18 or Figure 19. Figure 20. Timing Signals - Host System In Standby Prior to Card Insertion Host Power (AUXIN, 3.3VIN, and 1.5VIN) c SYSRST CPxx Card Power (AUXOUT, 3.3VOUT, and 1.5VOUT) RCLKEN d a e PERST REFCLK a Tpd a b c d e Min Max 500 System Dependent System Dependent Load Dependent 500 Units ns ns Figure 21. Timing Signals - Host-Controlled Power Down 21 TPS2231 TPS2236 www.ti.com SLVS536A – JULY 2004 – REVISED NOVEMBER 2004 APPLICATION INFORMATION (continued) Host Power (AUXIN, 3.3VIN, and 1.5VIN) e SHDN CPxx f Card Power (AUXOUT, 3.3VOUT, and 1.5VOUT) RCLKEN a d Tpd PERST f c REFCLK a b c d e f Min Max Units Load Dependent System Dependent 500 500 System Dependent System Dependent ns ns Figure 22. Timing Signals - Controlled Power Down When SHDN Asserted Host Power (AUXIN, 3.3VIN, and 1.5VIN) SYSRST CPxx Card Power (AUXOUT, 3.3VOUT, and 1.5VOUT) a RCLKEN d Tpd a PERST b REFCLK b c d c Figure 23. Timing Signals - Suprise Card Removal 22 Min Max Load Dependent 500 System Dependent 500 Units ns ns MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. 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