MOBILE PHONE CHARGER
First Claim
1. A mobile phone charger for charging a mobile phone, comprising:
- a battery module configured for receiving at least one battery therein, and providing an operating voltage from the at least one battery;
a boosting and charging circuit comprising a DC-DC converter chip, the input terminal of the DC-DC converter chip receiving the operating voltage from the battery module, and the output terminal of the DC-DC converter chip outputting a charging voltage;
a low voltage boosting circuit comprising a DC step-up chip, the voltage input terminal of the DC step-up chip connected to the positive terminal of the at least one battery to receive the operating voltage therefrom when the operating voltage is lower than a reference voltage, the DC step-up chip raising the low operating voltage and outputting the raised operating voltage to the input terminal of the DC-DC converter chip; and
a mobile phone charging interface connected to the output terminal of the DC-DC converter chip to receive the charging voltage, and providing the charging voltage to the mobile phone.
1 Assignment
0 Petitions
Accused Products
Abstract
A charger includes a battery module, a boosting and charging circuit, a low voltage boosting circuit, and a charging interface. The battery module provides an operating voltage for the boosting and charging circuit and the low voltage boosting circuit. When the operating voltage is greater than a reference voltage of the boosting and charging circuit, the boosting and charging circuit module works and outputs a charging voltage to the charging interface. When the operating voltage is smaller than the reference voltage of the boosting and charging circuit but greater than a starting voltage of the low voltage boosting circuit, the low voltage boosting circuit works and boosts the operating voltage to the boosting and charging circuit, and then the boosting and charging circuit module works and outputs the charging voltage to the charging interface for the mobile phone.
-
Citations
11 Claims
-
1. A mobile phone charger for charging a mobile phone, comprising:
-
a battery module configured for receiving at least one battery therein, and providing an operating voltage from the at least one battery; a boosting and charging circuit comprising a DC-DC converter chip, the input terminal of the DC-DC converter chip receiving the operating voltage from the battery module, and the output terminal of the DC-DC converter chip outputting a charging voltage; a low voltage boosting circuit comprising a DC step-up chip, the voltage input terminal of the DC step-up chip connected to the positive terminal of the at least one battery to receive the operating voltage therefrom when the operating voltage is lower than a reference voltage, the DC step-up chip raising the low operating voltage and outputting the raised operating voltage to the input terminal of the DC-DC converter chip; and a mobile phone charging interface connected to the output terminal of the DC-DC converter chip to receive the charging voltage, and providing the charging voltage to the mobile phone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification