PI5USB2546QZHEX

PI5USB2546Q ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| USB Charging Port Controller and Load Detection Power Switch Features Description  AEC-Q100 Qualified  Supports CDP/DCP Modes per USB Battery Charging Specification 1.2  Supports Shorted Mode per Chinese Telecommunication Industry Standard YD/T1591-2009  Supports non-BC1.2 Charging Modes by Automatic Selection The PI5USB2546Q is a USB charging port controller and power switch with an integrated USB 2.0 high-speed data line (D+/D–) switch. PI5USB2546QQ provides the electrical signatures on D+/D– to support charging schemes listed under device feature section. This series is compatible with both popular BC1.2 compliant and non-BC1.2 compliant devices. System wake up (from S3) with a mouse/keyboard (both low speed and full speed) is fully supported in the PI5USB2546Q. Additionally, PI5USB2546Q supports two distinct power management features, namely, power wake and port power management (PPM) through /STATUS pin. Power wake allows for power supply control in S4/S5 charging and PPM manages port power in a multi-port application. The PI5USB2546Q 73-mΩ power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Two programmable current thresholds provide flexibility for setting current limits and load detect thresholds.  Divider-1A mode  Divider-2A mode  DCP-1.2V mode  Supports Sleep-Mode Charging and Mouse/Keyboard Wake up  Automatic SDP/CDP Switching for Devices that do not request for the CDP Ports  Load Detection for Power Supply Control in S4/S5 Charging and Port Power Management in all Charge Modes  Compatible with USB 2.0/3.0 Power Switch requirements  Integrated 73-mΩ (Typ.) High-Side MOSFET  Adjustable Current-Limit up to 3A(Typ.)  Operating Range:4.5V to 5.5V  Max Device Current  Applications 2μA at Device Disabled  Automotive  USB Ports (Host and Hubs)  Notebook and Desktop PCs  Universal Wall Charging Adapters  270μA at Device Enabled  Device Package: TQFN 3.0x3.0-16L  UL Listed and CB File No. E341484 Pin Configuration (TQFN-16L, ZH) PI5USB2546Q 2015-08-0013 PT0572 1 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Pin Description Pin # Name Type Description 1 IN P Input voltage and supply voltage; connect 0.1μF or greater ceramic capacitor from IN to GND as close to the device as possible 2 DM_OUT I/O D- Data line to USB host controller. 3 DP_OUT I/O D+ data line to USB host controller. 4 ILIM_SEL I 5 EN I 6 CTL1 I 7 CTL2 I 8 CTL3 I 9 STATUS O 10 DP_IN I/O D+ data line to downstream connector 11 DM_IN I/O D- data line to downstream connector. 12 OUT P Power-switch output 13 FAULT O Active-low open-drain output, asserted when over-temperature or current limit condition occurs 14 GND G Ground connection 15 ILIM_LO I External resistor connection used to set the low current-limit threshold and the load detection current threshold. A resistor to ILIM_LO is optional; see Current-Limit Settings. 16 ILIM_HI I External resistor connection used to set the high current-limit threshold. NA Exposed PAD G Internally connected to GND. Thermal pad to heat-sink the part to the circuit board. Logic-level input signal used to control the charging mode, current limit threshold, and load detection, see the control truth table. Can be tied directly to IN or GND without pull-up or pull-down resistor. Logic-level input for turning the power switch and the signal switches on/off, logic low turns off the signal and power switches and holds OUT in discharger. Can be tied directly to IN or GND without pull-up or pull-down resistor. Logic-level inputs used to control the charging mode and signal switches; see the control truth table. Can be tied directly to IN or GND without pull-up or pull-down resistor. Active-low open-drain output, asserted in load detection conditions. * I = Input; O = Output; P = Power; G = Ground 2015-08-0013 PT0572 2 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Maximum Ratings All Input (except IN to OUT, and DP_IN, DM_IN, DP_OUT, DM_OUT) ..........-0.3V to +6.0V IN to OUT .................................................................................................................................-6.0V to +6.0V DP_IN, DM_IN, DP_OUT, DM_OUT ...................................................... -0.3V to IN+0.3 or +5.7V Input clamp current (DP_IN, DM_IN, DP_OUT, DM_OUT) ............................................... ±20mA Continuous current in SDP or CDP mode (DP_IN to DP_OUT or DM_IN to DM_OUT)........................................................................±100mA Continuous current in BC1.2 DCP mode (DP_IN to DM_IN) ................................................ ±50mA Continuous output current (OUT).....................................................................................Internally limited Continuous output sink current (/FAULT, /STATUS) ..................................................................25mA Continuous output source current (ILIM_LO, ILIM_HI) ..........................................internally limited ESD: HBM Mode (All pins) ...................................................................................................................2kV CDM Mode (All pins) ................................................................................................................ 500V HBM (USB connector pins: DP_IN, DM_IN, OUT to GND)............................................6kV Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operating Conditions Symbol Parameter Min. Typ. Max. Unit 4.5 - 5.5 V Input Voltage, logic-level EN, CTL1, CTL2, CTL3, ILIM_SEL inputs 0 - 5.5 V Input Voltage, data line inputs, DP_IN, DM_IN, DP_OUT, DM_OUT 0 - VIN V Input Voltage, IN VIN VIH High-level input voltage, EN, CTL1, CTL2, CTL3, ILIM_SEL 1.8 - - V VIL Low-level input voltage, EN, CTL1, CTL2, CTL3, ILIM_SEL - - 0.8 V Continuous current data line inputs, SDP or CDP mode, DP_IN to DP_OUT or DM_IN to DM_OUT - - ±30 mA Continuous current data line inputs, BC1.2 DCP mode, DP_IN to DM_IN - - ±15 mA Continuous output current, OUT 0 - 2.5 A Continuous output sink current, /FAULT, /STATUS 0 - 10 mA Current-limit set resistor 16.9 - 750 kΩ TA Ambient Temperature Range -40 - 85 ºC TJ Operating Virtual Junction Temperature Range -40 - 125 ºC IOUT RILIM_XX 2015-08-0013 PT0572 3 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Electrical Characteristics 4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ RILIM_HI=20kΩ, RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified. Symbol Parameter Test Conditions Min Typ. Max TJ = 25oC, IOUT = 2A 73 84 -40oC ≤ TJ ≤ 85oC, IOUT = 2A 73 105 -40oC ≤ TJ ≤ 125oC, IOUT = 2A 73 120 0.7 1.0 1.60 0.2 0.35 0.5 2.7 4 1.7 3 Unit Power Switch RDS(on) On Resistance(1) tr OUT voltage rise time tf OUT voltage fall time ton OUT voltage turn-on time toff OUT voltage turn-off time VIN = 5V, CL = 1μF, RL = 100Ω ms VIN = 5V, CL = 1μF, RL = 100Ω ms Reverse leakage current VOUT = 5.5V, VIN = VEN = 0V, -40oC ≤ TJ ≤ 85oC, Measure IOUT RDCHG OUT discharge resistance VOUT = 4V, VEN = 0V 400 tDCHG_1 OUT discharge hold time Time VOUT< 0.7V tDCHG_2 OUT discharge hold time Time VOUT< 0.7V IREV mΩ 2 μA 500 630 Ω 1.30 2.0 2.9 s 300 410 550 ms - 1 1.35 1.70 V - 0.85 1.15 1.45 V - - 200 - mV -0.5 - 0.5 µA Discharge EN, ILIM_SEL, CTL1,CTL2, CTL3, inputs Input pin rising logic threshold voltage Input pin falling logic threshold voltage Hysteresis(2) Input current (1) (2) Pin voltage= 0V to 5.5V Pulse-testing techniques maintain junction temperature close to ambient temperature; Thermal effects must be taken into account separately These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product warranty 2015-08-0013 PT0572 4 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Electrical Characteristics 4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ RILIM_HI=20kΩ, RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified. Symbol Description Test Conditions Min. Typ. Max. Unit 205 575 2120 2340 2770 240 625 2275 2510 2970 275 680 2430 2685 3170 mA - 1.5 - s VEN=0V, VOUT=0V, TJ =-40°C to +125°C - 0.1 2 VCTL1=VCTL2= VIN; VCTL3= 0V VILIM_SEL = 0V - 165 220 VCTL1 = VCTL2 = VCTL3 = VIN, VILIM_SEL = 0V - 175 230 VCTL1 = VCTL2 = VIN; VCTL3 = 0V, VILIM_SEL = VIN - 185 240 VCTL1 = VCTL2 = VCTL3 = VIN,VILIM_SEL = VIN - 195 250 VCTL1 = 0V; VCTL2 = VCTL3 = VIN, VILIM_SEL = 0V - 215 270 VCTL1 = 0V; VCTL2 = VCTL3 = VIN, VILIM_SEL = VIN - 240 295 - 3.9 4.1 4.3 V - - 100 - mV ILIM_SEL Current Limit IOS OUT Current-limit(2) VILIM_SEL= 0 V RILIM_LO=210kΩ VILIM_SEL= 0 V RILIM_LO=80.6kΩ VILIM_SEL= 0 V RILIM_LO=22.1kΩ VILIM_SEL= VIN RILIM_HI=20kΩ VILIM_SEL= VIN RILIM_HI=16.9kΩ tIOS Response time to OUT short circuit(1) VIN = 5.0V, R=0.1Ω, lead length=2” Supply Current IIN_OFF IIN_ON Disabled IN supply current Enable IN supply current A Undervoltage Lockout VUVLO IN rising UVLO threshold voltage (1) Hysteresis /FAULT VOL Output low voltage I/FAULT = 1mA - - 100 mV IOFF Off-state leakage current V/FAULT = 5.5V - - 1 A TD Over current /FAULT rising and falling deglitch 5 8.2 12 ms - /STATUS VOL Output low voltage I/STATUS = 1mA - - 100 mV IOFF Off-state leakage V/STATUS = 5.5V - - 1 A 170 - 20 - Thermal Shutdown OTSD Thermal shutdown threshold - (1) Hysteresis - - °C Note: (1) These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product warranty (2) Pulse-testing techniques maintain junction temperature close to ambient temperature; current limit value tested at 80% output voltage. Thermal effects must be taken into account separately. 2015-08-0013 PT0572 5 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Electrical Characteristics, High-bandwidth Switch 4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ RILIM_HI=20kΩ, RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified. Symbol Description Test Conditions Min. Typ. Max. Unit VDP/DM_OUT= 0V, IDP/DM_IN= 30mA - 2 4 Ω VDP/DM_OUT= 2.4V, IDP/DM_IN= -15mA - 3 6 Ω VDP/DM_OUT= 0V, IDP/DM_IN= 30mA - 0.05 0.15 Ω VDP/DM_OUT= 2.4V, IDP/DM_IN= -15mA VEN=0V, VDP/DM_IN= 0.3V, Vac= 0.6VPK-PK, f=1MHz - 0.05 0.15 Ω - 4.5 VDP/DM_IN= 0.3V,Vac= 0.6VPK-PK, f = 1MHz - 5.4 6.2 pF VEN = 0V, f = 250MHz - 33 - dB f = 250MHz VEN = 0V, VDP/DM_IN = 3.6V, VDP/DM_OUT = 0V, measure IDP/DM_OUT RL =50Ω - 52 - dB - 0.1 1.5 A - 2.0 - GHz - - 0.25 - ns - - 0.1 0.2 ns HIGH_BANDWIDTH ANALOG SWITCH DP/DM switch on resistance Switch resistance mismatch between DP/DM channels DP/DM switch off-state capacitance(1) DP/DM switch on-state capacitance(2) Off-state isolation(3) OIRR XTALK Off-state cross channel isolation IOFF Off-state leakage current BW Bandwidth(-3dB)(3) (3) tpd (3) Propagation delay Skew between opposite transitions of the same port(tPHL – tPLH) tSK pF Note: (1) The resistance in series with the parasitic capacitance to GND is typically 250 Ω. (2) The resistance in series with the parasitic capacitance to GND is typically 150 Ω. (3) These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product warranty. 2015-08-0013 PT0572 6 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Electrical Characteristics, Charging Controller 4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ RILIM_HI=20kΩ, RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified. Symbol Description Test Conditions Min. Typ. Max. Unit - 125 200 Ω 1.19 1.25 1.31 V 60 75 94 kΩ 1.9 2.0 2.1 V 2.57 2.7 2.84 V 7.5 10.5 16 kΩ 2.57 2.7 2.84 V 1.9 2.0 2.1 V 7.5 10.5 16 kΩ 0.5 0.6 0.7 V 0.25 - 0.4 V - 50 - mV 0.8 - 1.5 V - 100 - mV 550 650 765 mA - 50 - mA Load detect set time 140 200 275 ms Load detect reset time 1.9 3 4.2 s SHORTED MODE (BC1.2 DCP) DP_IN/DM_IN shorting resistance VCTL1= VIN; VCTL2= VCTL3= 0V DCP-1.2V MODE DP_IN/DM_IN output voltage DP_IN/DM_IN output impedance VCTL1= 0V; VCTL2= VCTL3= VIN, Apply 3V on DP_IN for 0.5s and measure the D+/D- voltage within the 2s DIVIDER-1A MODE DP_IN Divider-1A output voltage DM_IN Divider-1A output voltage VCTL1= 0V; VCTL2= VCTL3= VIN, DP_IN/DM_IN output impedance DIVIDER-2A MODE DP_IN Divider-2A output voltage DM_IN Divider-2A output voltage VCTL1= 0V; VCTL2= VCTL3= VIN; IOUT= 1A DP_IN/DM_IN output impedance CHARGING DOWNSTREAM PORT VDM_SRC VDAT_REF VLGC_REF DP_IN CDP output voltage DP_IN rising lower window threshold for VDM_SRC activation Hysteresis(1) DP_IN rising upper window threshold for VDM_SRC de-activation Hysteresis(1) LOAD DETECT- NON POWER WAKE IOUT rising load detect current threshold ILD Hysteresis(1) tLD_SET VCTL1= VCTL2= VCTL3= VIN, VIN =0.6V, -250μA ≤ IDM_IN ≤ 0μA VCTL1= VCTL2= VCTL3= VIN VCTL1= VCTL2= VCTL3= VIN Note: (1) These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product warranty. 2015-08-0013 PT0572 7 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Electrical Characteristics, Charging Controller 4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ RILIM_HI=20kΩ, RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified. Symbol Description LOAD DETECT- POWER WAKE Power wake short circuit current IOS_PW limit IOUT falling power wake reset current threshold Reset current hysteresis(1) Test Conditions VCTL1= VCTL2= 0V, VCTL3= VIN Power wake reset time Min. Typ. Max. Unit 20 55 90 mA 10 45 85 mA - 5 - mA 10.7 15 20.6 s Note: (1) These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product warranty. 2015-08-0013 PT0572 8 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Functional Description PI5USB2546Q Block Diagram IN ILIM_HI ILIM_LO ILIM_SEL OUT Current Limit Select Disable+UVLO+ Dischager Current Limit Charger Pump OC UVLO GND OTSD Thermal Sense Driver Load Detection 8msDeglitch FAULT Discharge EN 8ms-Deglitch (Falling edge) DM_OUT DM_IN DP_OUT DP_IN OC CTL1 CTL2 Logic Control CDP Detection DCP Detection Divider Modes Auto Detection Load Detection Discharge STATUS CTL3 Discharge 2015-08-0013 PT0572 9 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Details Description The following overview references various industry standards. It is always recommended to consult the most up-to-date standard to ensure the most recent and accurate information. Rechargeable portable equipment requires an external power source to charge its batteries. USB ports are a convenient location for charging because of an available 5V power source. Universally accepted standards are required to make sure host and client-side devices operate together in a system to ensure power management requirements are met. Traditionally, host ports following the USB 2.0 specification must provide at least 500mA to downstream client-side devices. Because multiple USB devices can be attached to a single USB port through a buspowered hub, it is the responsibility of the client-side device to negotiate its power allotment from the host to ensure the total current draw does not exceed 500mA. In general, each USB device is granted 100mA and may request more current in 100mA unit steps up to 500mA. The host may grant or deny based on the available current. A USB 3.0 host port not only provides higher data rate than USB 2.0 port but also raises the unit load from 100mA to 150mA. It is also required to provide a minimum current of 900mA to downstream client-side devices. Additionally, the success of USB has made the mini-USB connector a popular choice for wall adapter cables. This allows a portable device to charge from both a wall adapter and USB port with only one connector. As USB charging has gained popularity, the 500mA minimum defined by USB 2.0 or 900mA for USB 3.0 has become insufficient for many handset and personal media players which need a higher charging rate. Wall adapters can provide much more current than 500mA/900mA. Several new standards have been introduced defining protocol handshaking methods that allow host and client devices to acknowledge and draw additional current beyond the 500mA/900mA minimum defined by USB 2.0/3.0 while still using a single micro-USB input connector. The PI5USB2546Q supports four of the most common USB charging schemes found in popular hand-held media and cellular devices:     USB Battery Charging Specification BC1.2 Chinese Telecommunications Industry Standard YD/T 1591-2009 Divider-1A and Divider-2A DCP-1.2V Mode YD/T 1591-2009 is a subset of BC1.2 spec. supported by vast majority of devices that implement USB charging. Divider-1A, Divider-2A and DCP-1.2V charging schemes are supported in devices from specific yet popular device makers. BC1.2 lists three different port types as listed below:    Standard Downstream Port (SDP) Charging Downstream Port (CDP) Dedicated Charging Port (DCP) BC1.2 defines a charging port as a downstream facing USB port that provides power for charging portable equipment, under this definition CDP and DCP are defined as charging ports Table 1 shows the differences between these ports. Table 1. Operation Modes Port Type Support USB 2.0 Communication SDP (USB 2.0) SDP (USB 3.0) CDP DCP Yes Yes Yes No 2015-08-0013 Max. allowable current draw by portable device 0.5A 0.9A 1.5A 1.5A PT0572 10 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Standard Downstream Port (SDP) USB 2.0/USB 3.0 An SDP is a traditional USB port that follows USB 2.0/3.0 protocol and supplies a minimum of 500mA/900mA per port. USB 2.0/3.0 communications is supported, and the host controller must be active to allow charging. PI5USB2546Q supports SDP mode in system power state S0 when system is completely powered ON and fully operational. For more details on control pin (CTL1, CTL2, CTL3 and ILIM_SEL) settings to program this state please refer to device truth table. Charging Downstream Port (CDP) A CDP is a USB port that follows USB BC1.2 and supplies a minimum of 1.5A per port. It provides power and meets USB 2.0 requirements for device enumeration. USB 2.0 communications is supported and the host controller must be active to allow charging. What separates a CDP from an SDP is the host-charge handshaking logic that identifies this port as a CDP. A CDP is identifiable by a compliant BC1.2 client device and allows for additional current draw by the client device. The CDP hand-shaking process is done in two steps. During step one the portable equipment outputs a nominal 0.6V output on its D+ line and reads the voltage input on its D- line. The portable device concludes it is connected to an SDP if the voltage is less than the nominal data detect voltage of 0.3V. The portable device concludes that it is connected to a Charging Port if the Dvoltage is greater than the nominal data detect voltage of 0.3V and optionally less than 0.8V. The second step is necessary for portable equipment to determine if it is connected to CDP or DCP. The portable device outputs a nominal 0.6V output on its D- line and reads the voltage input on its D+ line. The portable device concludes it is connected to a CDP if the data line being read remains less than the nominal data detect voltage of 0.3V. The portable device concludes it is connected to a DCP if the data line being read is greater than the nominal data detect voltage of 0.3V. PI5USB2546Q supports CDP mode in system power state S0 when system is completely powered ON and fully operational. For more details on control pin (CTL1, CTL2, CTL3 and ILIM_SEL) settings to program this state please refer to device truth table. Dedicated Charging Port (DCP) A DCP only provides power but does not support data connection to an upstream port. As shown in following sections, a DCP is identified by the electrical characteristics of its data lines. The PI5USB2546Q emulates DCP in two charging states, namely DCP Forced and DCP Auto as shown in Figure 4. In DCP Forced state the device will support one of the two DCP charging schemes, namely Divider-1A or DCP_Shorted. In the DCP Auto state, the device charge detection state machine is activated to selectively implement charging schemes involved with the Shorted DCP mode, Divider-1A, Divider-2A and DCP-1.2V modes. Shorted DCP mode complies with BC1.2 and Chinese Telecommunications Industry Standard YD/T 1591-2009, while the Divider-1A, Divider-2A and DCP-1.2V modes are employed to charge devices that do not comply with BC1.2 DCP standard. DCP BC1.2 and YD/T 1591-2009 Both standards define that the D+ and D- data lines should be shorted together with a maximum series impedance of 200 Ω. This is shown as Figure 1. VBUS PI5USB2546Q 2.0V D- OUT 200Ω USB Host/Hub CDP Detect Auto Detect D- USB Connector 1.2V D+OUT 2.7V D+ GND Figure 1, DCP mode 2015-08-0013 PT0572 11 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Divider-1A and Divider-2A Charging Scheme There are two charging schemes supported by PI5USB2546Q, Divider-1A and Divider-2A as shown below. In Divider-1A charging scheme the device applies 2.0V and 2.7V to D+ and D- data line respectively. This is reversed in Divider-2A mode. VBUS PI5USB2546Q 2.7V D- OUT USB Host/Hub CDP Detect Auto Detect D- USB Connector 1.2V D+OUT 2.0V D+ GND Figure 2a, Divider-1A Charging Scheme VBUS PI5USB2546Q 2.0V D- OUT USB Host/Hub CDP Detect Auto Detect D- USB Connector 1.2V D+OUT 2.7V D+ GND Figure 2b, Divider-2A Charging Scheme 2015-08-0013 PT0572 12 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| DCP-1.2V Charging Scheme DCP-1.2V charging scheme is used by some handheld devices to enable fast charging at 2.0A. PI5USB2546Q supports this scheme in the DCP-Auto mode before the device enters BC1.2 shorted mode. To simulate this charging scheme D+/D- lines are shorted and pulled-up to 1.2V for fixed duration then device moves to DCP shorted mode as defined in BC1.2 spec. This is shown as Figure 3. VBUS D- OUT PI5USB2546Q 2.0V USB Host/Hub CDP Detect D- Auto Detect USB Connector 1.2V D+OUT D+ 2.7V GND Figure 3, DCP-1.2V Charging Scheme DCP Auto Mode As mentioned above the PI5USB2546Q integrates an auto-detect state machine that supports all the above DCP charging schemes. It starts in Divider-1A scheme, however if a BC1.2 or YD/T 1591-2009 compliant device is attached, the PI5USB2546Q responds by discharging OUT, turning back on the power switch and operating in 1.2Vmode briefly and then moving to BC1.2 DCP mode. It then stays in that mode until the device releases the data line, in which case it goes back to Divider-1A scheme. When a Divider-1A compliant device is attached the PI5USB2546Q will stay in Divider-1A state. Also, the PI5USB2546Q will automatically switch between the Divider-1A and Divider-2A schemes based on charging current drawn by the connected device. Initially the device will set the data lines to Divider-1A scheme. If charging current of the device >750mA is measured by the PI5USB2546Q, it switches to Divider-2A scheme and test to see if the peripheral device will still charge at a high current. If it does then it stays in Divider-2A charging scheme otherwise it will revert to Divider-1A scheme. PI5USB2546Q To USB 2.0 Host BC1.2 CDP Controlled by CTL pins settings DCP Auto DBC1.2 DCP /DCP-1.2V D+ Divider-1A/ Divider-2A Figure 4, DCP_Auto Mode 2015-08-0013 PT0572 13 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| DCP Forced Shorted / DCP Forced Divider-1A In this mode the device is permanently set to one of the DCP schemes (BC1.2/ YD/T 1591-2009 or Divider-1A) as commanded by its control pin setting per device truth table. High-Bandwidth Data Line Switch The PI5USB2546Q passes the D+ and D- data lines through the device to enable monitoring and handshaking while supporting charging operation. A wide bandwidth signal switch is used, allowing data to pass through the device without corrupting signal integrity. The data line switches are turned on in any of CDP or SDP operating modes. The EN input also needs to be at logic High for the data line switches to be enabled. NOTE: 1. 2. 3. 4. Under CDP mode, the data switches are ON even while CDP handshaking is occurring. The data line switches are OFF if EN or all CTL pins are held low, or if in DCP mode. They are not automatically turned off if the power switch (IN to OUT) is in current limit. The data switches are for USB 2.0 differential pair only. In the case of a USB 3.0 host, the super speed differential pairs must be routed directly to the USB connector without passing through the PI5USB2546Q. Data switches are OFF during OUT (VBUS) discharge 2015-08-0013 PT0572 14 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Device Operation Please refer to the simplified device state diagram below. Power-on-reset (POR) holds device in initial state while output is held in discharge mode. Any POR event will take the device back to initial state. After POR clears, device goes to the next state depending on the CTL1, CTL2, CTL3 and ILIM_SEL lines as shown Figure 5. DCP_Auto Reset DCP_Shorted Divider-1A Sample CTL Pins DCP Forced (DCP Shorted or Divider-1A) DCH/SDP/CDP CDP (1111) DCH DCH Done DCP_Auto DCP_Shorted /Divider-1A DCH/SDP/CDP SDP1 (111x/ 010x) Discharge SDP2 (1110) DCP Auto (DCP Shorted /DCP-1.2V / Divider-1A/2A) Not SDP1 Not SDP2 or CDP SDP1 CDP CDP (1111) SDP2 (1110) SDP2 Note: 1) All shaded boxed are device charging modes. 2) See below table for CTL settings corresponding to flow line conditions Device Control Pins Flow Line Condition CTL1 CTL2 CTL3 ILIM_SEL DCH(Discharge) 0 0 0 x CDP 1 1 1 1 SDP2(No Discharge 1 1 1 0 from/to CDP) SDP1(Discharge 1 1 0 x from/to any charging 0 1 0 x state including CDP) DCP_Short 1 0 0 x DCP/Divider-1A 1 0 1 x 0 1 1 x DCP_Auto 0 0 1 x Figure 5, PI5USB2546Q Charging States Output Discharge To allow a charging port to renegotiate current with a portable device, PI5USB2546Q uses the OUT discharge function. It proceeds by turning off the power switch while discharging OUT, then turning back on the power switch to reassert the OUT voltage. This discharge function is automatically applied as shown in device state diagram. 2015-08-0013 PT0572 15 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Wake on USB Feature (Mouse/Keyboard Wake Feature) USB 2.0 Background Information The PI5USB2546Q data lines interface with USB 2.0 devices. USB 2.0 defines three types of devices according to data rate. These devices and their characteristics relevant to PI5USB2546Q Wake on USB operation are shown below: Low-speed USB devices  1.5 Mb/s  Wired mice and keyboards are examples  No devices that need battery charging  All signaling performed at 2.0V and 0.8V hi/lo logic levels  D- high to signal connect and when placed into suspend  D- high when not transmitting data packets Full-speed USB devices  12 Mb/s  Wireless mice and keyboards are examples  Legacy phones and music players are examples  Some legacy devices that need battery charging  All signaling performed at 2.0V and 0.8V hi/lo logic levels  D+ high to signal connect and when placed into suspend  D+ high when not transmitting data packets High-speed USB devices  480 Mb/s  Tablets, phones and music players are examples  Many devices that need battery charging  Connect and suspend signaling performed at 2.0V and 0.8V hi/lo logic levels  Data packet signaling performed a logic levels below 0.8V  D+ high to signal connect and when placed into suspend (same as a full-speed device)  D+ and D- low when not transmitting data packets Wake On USB Wake on USB is the ability of a wake configured USB device to wake a computer system from its S3 sleep state back to its S0 working state. Wake on USB requires the data lines to be connected to the system USB host before the system is placed into its S3 sleep state and remain continuously connected until they are used to wake the system. The PI5USB2546Q supports low and full speed HID (human interface device like mouse/key board) wake function. There are two scenarios under which wake on mouse are supported by the PI5USB2546Q. The specific CTL pin changes that the PI5USB2546Q will override are shown below. The information is presented as CTL1, CTL2 and CTL3.The ILIM_SEL pin plays no role 1. 2. 111 (CDP/SDP2) to 011 (DCP-Auto) 110/010 (SDP1) to 011 (DCP-Auto) 2015-08-0013 PT0572 16 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| USB Low-Speed / Full-Speed Device Recognition PI5USB2546Q is capable of detecting LS or FS device attachment when PI5USB2546Q is in SDP or CDP mode. Per USB spec when no device is attached, the D+ and D- lines are near ground level. When a low speed compliant device is attached to the PI5USB2546Q charging port, D- line will be pulled high in its idle state (mouse/keyboard not activated). However when a FS device is attached the opposite is true in its idle state, i.e. D+ is pulled high and D- remains at ground level. PI5USB2546Q monitors both D+ and D- lines while CTL pin settings are in CDP or SDP mode to detect LS or FS HID device attachment. To support HID sleep wake, PI5USB2546Q must first determine that it is attached to a LS or FS device when system is in S0 power state. PI5USB2546Q does this as described above. While supporting a LS HID wake is straight forward, supporting FS HID requires making a distinction between a FS and a HS device. This is because a high speed device will always present itself initially as a full speed device (by a 1.5K pull up resistor on D+). The negotiation for high speed then makes the distinction whereby the 1.5K pull up resistor gets removed. PI5USB2546Q handles the distinction between a FS and HS device at connect by memorizing if the D+ line goes low after connect. A HS device after connect will always undergo negotiation for HS which will require the 1.5KΩ resistor pull-up on D+ to be removed. To memorize a FS device, PI5USB2546Q requires the device to remain connected for at least 60 sec while system is in S0 mode before placing it in sleep or S3 mode. If system is placed in sleep mode earlier than the 60 sec window, a FS device may not get recognized and hence could fail to wake system from S3. This requirement does not apply for LS device. No CTL Pin Timing Requirement after Wake Event and Transition from S3 to S0 There is no CTL pin timing requirement for the PI5USB2546Q when the wake configured USB device wakes the system from S3 back to S0. 2015-08-0013 PT0572 17 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Device Control Pins Truth Table Device Control Pins Table lists all valid bias combinations for the four control pins CTL1, CTL2, CTL3 and ILIM_SEL pins and their corresponding charging mode. It is important to note that the Device Control Pins Table purposely omits matching charging modes of the PI5USB2546Q with global power states (S0-S5) as device is agnostic to system power states. The PI5USB2546Q monitors its CTL inputs and will transition to whatever charging state it is commanded to go to (except when LS/FS HID device is detected). For example if sleep charging is desired when system is in standby or hibernate state then user must set PI5USB2546Q control pins to correspond to DCP_Auto charging mode per below table. When system is put back to operation mode then set control pins to correspond to SDP or CDP mode and so on. PI5USB2546Q Device Control Pins Truth Table CTL1 CTL2 CTL3 ILIM_SEL MODE 0 0 0 0 0 0 0 0 1 0 1 0 Discharge Discharge DCP_Auto 0 0 1 1 DCP_Auto 0 1 0 0 SDP1 Current Limit Setting NA NA ILIM_HI IOS_PW & ILIM_HI(1) ILIM_LO /STATUS Output (Active low) OFF OFF OFF 0 0 1 1 0 1 1 0 SDP1 DCP_Auto ILIM_HI ILIM_HI OFF OFF 0 1 1 1 DCP_Auto ILIM_HI DCP load present(3) 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 1 0 1 0 DCP_Shorted DCP_Shorted Divider-1A Divider-1A SDP1 ILIM_LO ILIM_HI ILIM_LO ILIM_HI ILIM_LO OFF OFF OFF OFF OFF Device forced to stay in DCP BC1.2 charging mode 1 1 1 1 0 1 1 0 SDP1 SDP2(4) ILIM_HI ILIM_LO OFF OFF Data lines connected 1 1 1 1 CDP(4) ILIM_HI CDP load present(5) DCP load present(2) OFF Comment OUT held low Data lines disconnected Data lines disconnected and load detect function active Data lines connected Data lines disconnected Data lines disconnected and load detect function active Device forced to stay in Divider-1A charging mode Data lines connected and load detect active Note: (1) PI5USB2546Q: Current limit (IOS) is automatically switched between IOS_PW and the value set by ILIM_HI according to the Load Detect –Power (2) (3) (4) (5) Wake functionality. DCP Load present governed by the “Load Detection – Power Wake” limits. DCP Load present governed by the “Load Detection – Non Power Wake” limits. No OUT discharge when changing between 1111 and 1110. CDP Load present governed by the “Load Detection – Non Power Wake” limits and BC1.2 primary detection. 2015-08-0013 PT0572 18 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Below tables can be used as an aid to program the PI5USB2546Q per system states however not restricted to below settings only. PI5USB2546Q Control Pin Setting Matched to System Power States System Global Power State S0 S0 S0 S4/S5 S3/S4/S5 S3 S3 S3 CTL1 CTL2 CTL3 ILIM_SEL SDP1 1 1 0 1 or 0 Current Limit Setting ILIM_HI/ILIM_LO SDP2, no discharge to/from CDP CDP, load detection with ILIM_LO + 25mA thresholds or if a BC1.2 primary detection occurs Auto mode, load detection with power wake thresholds Auto mode, no load detection Auto mode, keyboard/mouse wake up, load detection with ILIM_LO + 25mA thresholds Auto mode, keyboard/mouse wake up, no load detection SDP1, keyboard/mouse wake up 1 1 1 0 ILIM_LO 1 1 1 1 ILIM_HI 0 0 1 1 ILIM_HI 0 0 1 0 ILIM_HI 0 1 1 1 ILIM_HI 0 1 1 0 ILIM_HI 0 1 0 1 or 0 ILIM_HI/ILIM_LO Charging Mode 2015-08-0013 PT0572 19 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||| Load Detect PI5USB2546Q offer system designers unique power management strategy not available in the industry from similar devices. There are two power management schemes supported by the PI5USB2546Q via the /STATUS pin, they are: 1. 2. Power Wake (PW) Port Power Management (PPM) Either feature may be implemented in a system depending on power savings goals for the system. In general Power Wake feature is used mainly in mobile systems like a notebook where it is imperative to save battery power when system is in deep sleep (S4/S5) state. On the other hand Port Power Management feature would be implemented where multiple charging ports are supported in the same system and system power rating is not capable of supporting high current charging on multiple ports simultaneously. Power Wake Goal of power wake feature is to save system power when system is in S4/S5 state. In S4/S5 state system is in deep sleep and typically running of the battery; so every “mW” in system power savings will translate to extending battery life. In this state the PI5USB2546Q will monitor charging current at the OUT pin and provide a mechanism via the /STATUS pin to switch out the high power DC-DC controller and switch in a low power LDO when charging current requirement is 2s (typ.) to allow the main power supply to turn on. After the discharge the device will turn back on with current limit set by ILIM_HI (Case 1, Figure 7) 2015-08-0013 PT0572 22 09/24/15 PI5USB2546Q USB Charging Port Controller and Load Detection Power Switch |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| DC/DC Disconnected/ShutDown LDO Switch-In Power Block 19V EN EN ||||||||||||||||| Turn HIGH after 15s. Ilimit set to 55mA when charging current falls to