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NXP Semiconductors Electronic Components Datasheet

NXQ1TXA5 Datasheet

One-chip 5V Qi wireless transmitter

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NXQ1TXA5
One-chip 5 V Qi wireless transmitter
Rev. 1.2 — 10 September 2015
Product short data sheet
1. General description
The NXQ1TXA5 is a controller/driver IC for a 5 V Qi-certified/compliant low-power
wireless charger. It offers a fully integrated solution that includes a 5 V full-bridge power)
stage, as defined in Wireless Power Consortium (WPC) 5 V Qi standards A5, A11, A12
and A16.
The NXQ1TXA5 uses dedicated analog ping circuitry to detect devices, according to the
Qi standard, achieving extremely low standby power consumption. If a Qi-compliant
receiver is detected, the NXQ1TXA5 starts to communicate with it. If the receiver is
recognized, it safely initiates wireless power transfer from the transmitter to the receiver,
while monitoring for fault conditions such as overheating or interference from metal
objects. The device is optimized to operate from a USB power supply and uses Smart
Power Limiting (SPL) to adjust the output power automatically to compensate for
power-limited supplies. The device supports Foreign Object Detection (FOD).
LED outputs and a buzzer output are available for the user interface. The LED outputs
feature a number of blinking modes. Static Power Reduction (SPR) allows multiple
NXQ1TXA5-based transmitters to operate from a single USB power supply by limiting
power consumption per device.
The NXQ1TXA5 is available in a 5 mm 5 mm, 32-pin HVQFN package.
2. Features and benefits
One-chip WPC 1.1.2 Qi-compliant device for A5/A11/A12/A16 5 V single-coil
low-power transmitter
Operates from 5 V supply
Integrated high-efficiency full-bridge power stage with low EMI radiation meeting
EN55022 radiated and conducted emission limits
Very few external components required, minimizing cost and board space
Extremely low-power receiver detection circuitry; standby power 10 mW (typical)
Power stage fully protected against overcurrents and overtemperature
Fully integrated accurate coil current measurement
Demodulates and decodes communication packages from Qi-compliant receivers
PID regulation for closed-loop power drive and control
Internal 1.8 V digital supply generation
LED (2) and buzzer outputs
NTC input for external temperature check and protection
On-chip thermal protection
Small HVQFN 32-pin package (5 5 mm) with 0.5 mm pitch


NXP Semiconductors Electronic Components Datasheet

NXQ1TXA5 Datasheet

One-chip 5V Qi wireless transmitter

No Preview Available !

NXP Semiconductors
NXQ1TXA5
One-chip 5 V Qi wireless transmitter
FOD with automatic switching between V1.1 and V1.0 for legacy receiver support
FOD levels can be adjusted using external resistors to compensate for application
differences to meet Qi certification requirements
Smart Power Limiting (SPL) function to adapt to power-limited 5 V supplies
Static Power Reduction (SPR) function to limit power consumption
Supports Near Field Communication (NFC) TAG applications with delayed start-up
3. Applications
Wireless Power Consortium (WPC) certified/compliant Qi wireless power transmitters
4. Quick reference data
Table 1.
Symbol
VDDP
IDDP
Quick reference data
Parameter
power supply voltage
power supply current
Conditions
on pins VDDP1 and VDDP2
on pins VDDP1 and VDDP2
Ping mode (average current)
Power_Transfer mode (no load)
Power_Transfer mode (with load)
5. Ordering information
Min Typ Max Unit
3.5 -
5.25 V
- 2 2.8 mA
- 15 - mA
- -5A
Table 2. Ordering information
Type number
Package
Name
Description
NXQ1TXA5
HVQFN32 plastic thermal enhanced very thin quad flat package; no leads;
32 terminals; body 5 5 0.85 mm
Version
SOT617-3
5.1 Ordering options
Table 3. Ordering options
Type number Orderable part
number
NXQ1TXA5 NXQ1TXA5/404J
Package Packing method
HVQFN32 reel 7" Q1/T1,
*standard mark SMD
non-dry-pack
Minimum
Temperature
ordering quantity
1500
Tamb = 20 C to +85 C
NXQ1TXA5_SDS
Product short data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1.2 — 10 September 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
2 of 15


Part Number NXQ1TXA5
Description One-chip 5V Qi wireless transmitter
Maker NXP
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