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UPD1002-AI/MQ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46
UPD1002
DS00001760B-page 28 2014 Microchip Technology Inc.
3.3.4.1 Power Delivery Provider Capabilities
The USB PD Provider capabilities may be selected via the CFG_SEL0 and CFG_SEL1 pins, as defined in Section 3.3,
"Configuration Selection (CFG_SEL0/CFG_SEL1)". Each of the PD Provider capabilities are detailed below. When
capabilities are combined, it is possible that a device can support two or more currents for the same voltage. In this case,
the device will only advertise one voltage with the highest current.
For example, a device that specifies support for “Profile 2 + 5V@3A” must support 5V@2A, 12V@1.5A and 5V@ 3A.
In this case, the device will advertise only two Power Data Objects (PDO): 5V@3A and 12V@1.5A. The device will not
explicitly advertise 5V@2A. However, a consumer that requires 5V@2A will request the 5V@ 3A PDO but only consume
2A.
VSafe5V-L (5V@1A)
The Provider Capability Profile for VSafe5V Legacy (5V@1A) indicates that the UPD1002 supports providing 5 V at 1 A.
This is typically used in dual-role ports that offer no real capability at 5 V (e.g., a Standard-B Consumer-Provider Monitor
UFP that only supports 20 V), but need to abide by the USB Power Delivery Specification requirement that at least one
VSafe5V PDO be offered. Therefore, the capabilities of a legacy USB port (max 900 mA for USB 3.0) are included.
Profile 1
The Provider Capability Profile 1 indicates that the UPD1002 supports providing the voltages and currents needed to
satisfy the USB PD profile 1, as defined by the USB Power Delivery Specification (5V@2A).
Profile 2
The Provider Capability Profile 2 indicates that the UPD1002 supports providing the voltages and currents needed to
satisfy the USB PD profile 2, as defined by the USB Power Delivery Specification (5V@2A and 12V@1.5A).
Profile 3
The Provider Capability Profile 3 indicates that the UPD1002 supports providing the voltages and currents needed to
satisfy the USB PD profile 3, as defined by the USB Power Delivery Specification (5V@2A and 12V@3A).
Profile 4
The Provider Capability Profile 4 indicates that the UPD1002 supports providing the voltages and currents needed to
satisfy the USB PD profile 4, as defined by the USB Power Delivery Specification (5V@2A, 12V@3A, and 20V@3A).
Profile 5
The Provider Capability Profile 5 indicates that the UPD1002 supports providing the voltages and currents needed to
satisfy the USB PD profile 5, as defined by the USB Power Delivery Specification (5V@2A, 12V@5A, and 20V@5A).
12V@1.5A
The Provider Capability 12V@1.5A indicates that the UPD1002 supports providing 12 V at 1.5 A. This option can be
combined with other provider capability options.
12V@3A
The Provider Capability 12V@3A indicates that the UPD1002 supports providing 12 V at 3 A. This option can be com-
bined with other provider capability options.
12V@5A
The Provider Capability 12V@5A indicates that the UPD1002 supports providing 12 V at 5 A. This option can be com-
bined with other provider capability options.
20V@3A
The Provider Capability 20V@3A indicates that the UPD1002 supports providing 20 V at 3 A. This option can be com-
bined with other provider capability options.
20V@5A
The Provider Capability 20V@5A indicates that the UPD1002 supports providing 20 V at 5 A. This option can be com-
bined with other provider capability options.
Peak Power-Capable Setting 0b11 - 200% (PP-200)
The Peak Power-Capable 200% indicates that the UPD1002 supports providing 200% of the current limit for a 1 ms time
duration at 5% duty cycle. This will add the correct 0b11 bits to the PDO.
2014 Microchip Technology Inc. DS00001760B-page 29
UPD1002
3.3.4.2 PD Consumer Capabilities
The USB PD Consumer capabilities may be selected via the CFG_SEL0 and CFG_SEL1 pins, as defined in Section 3.3,
"Configuration Selection (CFG_SEL0/CFG_SEL1)". Each of the PD Consumer capabilities are detailed below.
VSafe5V-NC (5V@0A)
The Consumer Capability Profile for VSafe5V Non-Consuming indicates to the UPD1002 that this solution must have
only 5 V input sources and must not consume. This is typically used in dual-role ports that offer no capability in their
default role (e.g., a Standard-B Consumer-Provider hub UFP). Additionally, even if not explicitly listed, this capability is
supported by all consumers that support no other 5V capability (per the Power Delivery Specification).
12V@1.5A
The Consumer Capability 12V@1.5A indicates that the UPD1002 must have only 12 V input sources and must have at
least 1.5 A of input current for full-featured operation.
12V@3A
The Consumer Capability 12V@3A indicates that the UPD1002 must have only 12 V input sources and must have at
least 3 A of input current for full-featured operation.
12V@5A
The Consumer Capability 12V@5A indicates that the UPD1002 must have only 12 V input sources and must have at
least 5 A of input current for full-featured operation.
20V@3A
The Consumer Capability 20V@3A indicates that the UPD1002 must have only 20 V input sources and must have at
least 3 A of input current for full-featured operation.
20V@5A
The Consumer Capability 20V@5A indicates that the UPD1002 must have only 20 V input sources and must have at
least 5 A of input current for full-featured operation.
3.4 Voltage/Current Monitors (VMON/IMON)
3.4.1 VMON
The integrated voltage monitor utilizes the VMON pin to read a stepped down voltage representation of the VBUS volt-
age. This pin must be connected to a voltage divider circuit as specified in Section 2.4, "Power Connection Diagram,"
on page 22. The device monitors the VBUS voltage as a provider to manage the behavior of the power supply, detecting
power supply transitions and over/under-voltage conditions.
The device also monitors the VBUS voltage as a consumer for the following purposes:
• To verify the source provided voltage is within range after reception of the PS_RDY message and before asserting
the PD_GOOD signal.
• To monitor for occurrence of overvoltage or undervoltage exception conditions for the negotiated contract, upon
which PD_GOOD will be de-asserted.
3.4.1.1 Power Supply Transitions
Using VMON, the device monitors the voltage on VBUS to manage the transitions of the supply output. The supply
power-on and power-off transitions are determined to be at their final states when reaching predefined voltage thresh-
olds, as detailed in Table 3-4. The power-on threshold indicates when the supply has reached the defined voltage. The
power-off threshold indicates when the supply output is discharged. All voltage transitions are bound by an internal
timer. If the voltage transition times out, the FAULT_N pin will be asserted until the power transition is successfully com-
pleted.
TABLE 3-4: VMON POWER-ON/OFF TRANSITION THRESHOLDS
Voltage Threshold (V)
Min. Typical Max
Power-On -3-
Power-Off -2-
UPD1002
DS00001760B-page 30 2014 Microchip Technology Inc.
3.4.1.2 Overvoltage Condition
Using VMON, the device monitors the voltage on VBUS to detect an overvoltage condition on the supply output. The
overvoltage condition is determined when the predefined overvoltage threshold is crossed, as detailed in Table 3-5.
The VSELx_N pins are used to set the overvoltage protection (OVP) voltage on the VMON pin. The OVP fault will trig-
ger when the measured voltage on VMON is 10% above the selected voltage setting.
On the occurrence of the overvoltage condition:
• The supply output will turned off and discharged.
•The FAULT_N pin will be strobed approximately every 500ms.
• If more than 3 consecutive exceptions occur within a 4 second period, FAULT_N will be strobed approximately
every 5 seconds.
3.4.1.3 Undervoltage Condition
Using VMON, the device monitors the voltage on VBUS to detect an undervoltage condition on the supply output. The
undervoltage condition is determined when the predefined undervoltage threshold is crossed, as detailed in Table 3-6 .
On the occurrence of the undervoltage condition:
• The supply output will turned off and discharged.
•The FAULT_N pin will be strobed approximately every 500ms.
• If more than 3 consecutive exceptions occur within a 4 second period, FAULT_N will be strobed approximately
every 5 seconds.
3.4.2 IMON
The integrated current monitor utilizes the IMON pin to read a voltage representation of the power supply output current.
This pin should be fed by a current sense amplifier tuned to output 3.0 V when 6.0 A is flowing on VBUS. On connection
of a port partner and the completion of a negotiated power contract, the overcurrent threshold is set based on the nego-
tiated current. When the device is not connected to a port partner, the overcurrent threshold will be set to the default
level. On the occurrence of an overcurrent condition:
• The supply output will turned off and discharged.
•The FAULT_N pin will be strobed approximately every 500ms.
• If more than 3 consecutive exceptions occur within a 4 second period, FAULT_N will be strobed approximately
every 5 seconds.
TABLE 3-5: VMON OVERVOLTAGE THRESHOLDS
Voltage Threshold (V)
Min. Typical Max
5V -6.06.9
9V - 10.4 12.0
12 V - 13.7 15.8
16 V - 18.1 20.9
20 V - 22.5 26.9
TABLE 3-6: VMON UNDERVOLTAGE THRESHOLDS
Voltage Threshold (V)
Min. Typical Max
5V -4.5-
9V -8.1-
12 V - 10.8 -
16 V - 14.4 -
20 V - 18.0 -
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46

UPD1002-AI/MQ

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Buy UPD1002-AI/MQ
Manufacturer:
Microchip Technology
Description:
USB Interface IC USB Power Delivery Controller 32 QFN
Lifecycle:
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