Wireless Power Controller
WT7070
| 【 General Description 】 |
| The WT7070 is a highly integrated wireless power transmitter controller that supports Wireless Power Consortium (WPC) v1.2.4 EPP specifications. It is designed for wireless power charging pad applications. |
| The WT7070 minimizes external components by integrating the circuits of voltage regulators, ASK demodulation, FSK modulation, foreign object detection (FOD), PWM, ADC, MOSFET drivers, current sense amplifier, and an 8-bit MCU to allow small form factor and low BOM cost. Wide operation voltage range (4.25V to 21V) and a Multiple-Time-Programmable (MTP) non-volatile memory provide high reliability and allow flexible user configuration requirements. |
| 【 Features 】 | |
| ● | WPC v1.2.4 compliant, supports EPP 15W, such as MP-A2 & MP-A11, coil configurations |
| ● | Embedded 1T 8051 CPU |
| ● | Multiple-Time-Programmable (MTP) nonvolatile memory: 16K Bytes |
| ● | SRAM: 256+512 Bytes |
| ● | 20 MHz internal high frequency RC Oscillator |
| ● | 30 kHz internal low frequency RC Oscillator |
| ● | FSK modulation |
| ● | Voltage and current ASK demodulation |
| ● | Foreign Object Detection (FOD) |
| ● | NMOS pre-driver |
| ● | Current source for external temperature sensing and protection (OTP) |
| ● | Low-side current sensing with amplifier |
| ● | Over Current Protection (OCP) |
| ● | Over/Under Voltage Protections (OVP/UVP) |
| ● | Programmable 12-bit high speed and 8-bit low speed PWMs |
| ● | 9 channels ADC inputs |
| ● | Programmable LED patterns |
| ● | Programmable buzzer patterns |
| ● | VCC operating voltage: 4.25V to 21V |
| ● | Package type: 40-pin QFN |
| ● | Recommended operation temperature: -20°C to +105°C |
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